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 void InsetMathNest::drawMarkers(PainterInfo & pi, int x, int y) const
 364 {
 365         Color::color pen_color = mouse_hover_ || editing(pi.base.bv) ?
 366                 Color::mathframe : Color::mathcorners;
 367
 368         int const t = x + width() - 1;
 369         int const d = y + descent();
 370         pi.pain.line(x, d - 3, x, d, pen_color);
 371         pi.pain.line(t, d - 3, t, d, pen_color);
 372         pi.pain.line(x, d, x + 3, d, pen_color);
 373         pi.pain.line(t - 3, d, t, d, pen_color);
 374         setPosCache(pi, x, y);
 375 }
 376
 377
 378 void InsetMathNest::drawMarkers2(PainterInfo & pi, int x, int y) const
 379 {
 380         Color::color pen_color = mouse_hover_ || editing(pi.base.bv)?
 381                 Color::mathframe : Color::mathcorners;
 382
 383         drawMarkers(pi, x, y);
 384         int const t = x + width() - 1;
 385         int const a = y - ascent();
 386         pi.pain.line(x, a + 3, x, a, pen_color);
 387         pi.pain.line(t, a + 3, t, a, pen_color);
 388         pi.pain.line(x, a, x + 3, a, pen_color);
 389         pi.pain.line(t - 3, a, t, a, pen_color);
 390         setPosCache(pi, x, y);
 391 }
 392
 393
 394 bool InsetMathNest::setMouseHover(bool mouse_hover)
 395 {
 396         mouse_hover_ = mouse_hover;
 397         return true;
 398 }
 399
 400
 401 bool InsetMathNest::notifyCursorLeaves(Cursor & /*cur*/)
 402 {
 403 #ifdef WITH_WARNINGS
 404 #warning look here
 405 #endif
 406 #if 0
 407         MathData & ar = cur.cell();
 408         // remove base-only "scripts"
 409         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 410                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 411                 if (p && p->nargs() == 1) {
 412                         MathData ar = p->nuc();
 413                         erase(i);
 414                         insert(i, ar);
 415                         cur.adjust(i, ar.size() - 1);
 416                 }
 417         }
 418
 419         // glue adjacent font insets of the same kind
 420         for (pos_type i = 0; i + 1 < size(); ++i) {
 421                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 422                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 423                 if (p && q && p->name() == q->name()) {
 424                         p->cell(0).append(q->cell(0));
 425                         erase(i + 1);
 426                         cur.adjust(i, -1);
 427                 }
 428         }
 429 #endif
 430         return false;
 431 }
 432
 433
 434 void InsetMathNest::handleFont
 435         (Cursor & cur, docstring const & arg, char const * const font)
 436 {
 437         handleFont(cur, arg, from_ascii(font));
 438 }
 439
 440
 441 void InsetMathNest::handleFont
 442         (Cursor & cur, docstring const & arg, docstring const & font)
 443 {
 444         // this whole function is a hack and won't work for incremental font
 445         // changes...
 446
 447         if (cur.inset().asInsetMath()->name() == font) {
 448                 recordUndoInset(cur, Undo::ATOMIC);
 449                 cur.handleFont(to_utf8(font));
 450         } else {
 451                 recordUndo(cur, Undo::ATOMIC);
 452                 cur.handleNest(createInsetMath(font));
 453                 cur.insert(arg);
 454         }
 455 }
 456
 457
 458 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 459 {
 460         recordUndo(cur, Undo::ATOMIC);
 461         Font font;
 462         bool b;
 463         bv_funcs::string2font(to_utf8(arg), font, b);
 464         if (font.color() != Color::inherit) {
 465                 MathAtom at = MathAtom(new InsetMathColor(true, font.color()));
 466                 cur.handleNest(at, 0);
 467         }
 468 }
 469
 470
 471 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 472 {
 473         //lyxerr << "InsetMathNest: request: " << cmd << std::endl;
 474         //CursorSlice sl = cur.current();
 475
 476         switch (cmd.action) {
 477
 478         case LFUN_PASTE: {
 479                 recordUndo(cur);
 480                 cur.message(_("Paste"));
 481                 replaceSelection(cur);
 482                 docstring topaste;
 483                 if (cmd.argument().empty() && !theClipboard().isInternal())
 484                         topaste = theClipboard().getAsText();
 485                 else {
 486                         size_t n = 0;
 487                         idocstringstream is(cmd.argument());
 488                         is >> n;
 489                         topaste = cap::getSelection(cur.buffer(), n);
 490                 }
 491                 cur.niceInsert(topaste);
 492                 cur.clearSelection(); // bug 393
 493                 cur.bv().switchKeyMap();
 494                 finishUndo();
 495                 break;
 496         }
 497
 498         case LFUN_CUT:
 499                 recordUndo(cur);
 500                 cutSelection(cur, true, true);
 501                 cur.message(_("Cut"));
 502                 // Prevent stale position >= size crash
 503                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 504                 cur.normalize();
 505                 break;
 506
 507         case LFUN_COPY:
 508                 copySelection(cur);
 509                 cur.message(_("Copy"));
 510                 break;
 511
 512         case LFUN_MOUSE_PRESS:
 513                 lfunMousePress(cur, cmd);
 514                 break;
 515
 516         case LFUN_MOUSE_MOTION:
 517                 lfunMouseMotion(cur, cmd);
 518                 break;
 519
 520         case LFUN_MOUSE_RELEASE:
 521                 lfunMouseRelease(cur, cmd);
 522                 break;
 523
 524         case LFUN_FINISHED_LEFT:
 525                 cur.bv().cursor() = cur;
 526                 break;
 527
 528         case LFUN_FINISHED_RIGHT:
 529                 ++cur.pos();
 530                 cur.bv().cursor() = cur;
 531                 break;
 532
 533         case LFUN_CHAR_FORWARD:
 534                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 535         case LFUN_CHAR_FORWARD_SELECT:
 536                 cur.selHandle(cmd.action == LFUN_CHAR_FORWARD_SELECT);
 537                 cur.autocorrect() = false;
 538                 cur.clearTargetX();
 539                 cur.macroModeClose();
 540                 if (reverseDirectionNeeded(cur))
 541                         goto goto_char_backwards;
 542
 543 goto_char_forwards:
 544                 if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 545                         cur.pushLeft(*cur.nextAtom().nucleus());
 546                         cur.inset().idxFirst(cur);
 547                 } else if (cur.posRight() || idxRight(cur)
 548                         || cur.popRight() || cur.selection())
 549                         ;
 550                 else {
 551                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 552                         cur.undispatched();
 553                 }
 554                 break;
 555
 556         case LFUN_CHAR_BACKWARD:
 557                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 558         case LFUN_CHAR_BACKWARD_SELECT:
 559                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 560                 cur.autocorrect() = false;
 561                 cur.clearTargetX();
 562                 cur.macroModeClose();
 563                 if (reverseDirectionNeeded(cur))
 564                         goto goto_char_forwards;
 565
 566 goto_char_backwards:
 567                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 568                         cur.posLeft();
 569                         cur.push(*cur.nextAtom().nucleus());
 570                         cur.inset().idxLast(cur);
 571                 } else if (cur.posLeft() || idxLeft(cur)
 572                         || cur.popLeft() || cur.selection())
 573                         ;
 574                 else {
 575                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 576                         cur.undispatched();
 577                 }
 578                 break;
 579
 580         case LFUN_UP:
 581                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 582         case LFUN_UP_SELECT:
 583                 // FIXME Tried to use clearTargetX and macroModeClose, crashed on cur.up()
 584                 if (cur.inMacroMode()) {
 585                         // Make Helge happy
 586                         cur.macroModeClose();
 587                         break;
 588                 }
 589                 cur.selHandle(cmd.action == LFUN_UP_SELECT);
 590                 if (!cur.upDownInMath(true))
 591                         cur.undispatched();
 592                 // fixes bug 1598. Please check!
 593                 cur.normalize();
 594                 break;
 595
 596         case LFUN_DOWN:
 597                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 598         case LFUN_DOWN_SELECT:
 599                 if (cur.inMacroMode()) {
 600                         cur.macroModeClose();
 601                         break;
 602                 }
 603                 cur.selHandle(cmd.action == LFUN_DOWN_SELECT);
 604                 if (!cur.upDownInMath(false))
 605                         cur.undispatched();
 606                 // fixes bug 1598. Please check!
 607                 cur.normalize();
 608                 break;
 609
 610         case LFUN_MOUSE_DOUBLE:
 611         case LFUN_MOUSE_TRIPLE:
 612         case LFUN_WORD_SELECT:
 613                 cur.pos() = 0;
 614                 cur.idx() = 0;
 615                 cur.resetAnchor();
 616                 cur.selection() = true;
 617                 cur.pos() = cur.lastpos();
 618                 cur.idx() = cur.lastidx();
 619                 cap::saveSelection(cur);
 620                 break;
 621
 622         case LFUN_PARAGRAPH_UP:
 623         case LFUN_PARAGRAPH_DOWN:
 624                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 625         case LFUN_PARAGRAPH_UP_SELECT:
 626         case LFUN_PARAGRAPH_DOWN_SELECT:
 627                 break;
 628
 629         case LFUN_LINE_BEGIN:
 630         case LFUN_WORD_BACKWARD:
 631                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 632         case LFUN_LINE_BEGIN_SELECT:
 633         case LFUN_WORD_BACKWARD_SELECT:
 634                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 635                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 636                 cur.macroModeClose();
 637                 if (cur.pos() != 0) {
 638                         cur.pos() = 0;
 639                 } else if (cur.col() != 0) {
 640                         cur.idx() -= cur.col();
 641                         cur.pos() = 0;
 642                 } else if (cur.idx() != 0) {
 643                         cur.idx() = 0;
 644                         cur.pos() = 0;
 645                 } else {
 646                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 647                         cur.undispatched();
 648                 }
 649                 break;
 650
 651         case LFUN_WORD_FORWARD:
 652         case LFUN_LINE_END:
 653                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 654         case LFUN_WORD_FORWARD_SELECT:
 655         case LFUN_LINE_END_SELECT:
 656                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 657                                 cmd.action == LFUN_LINE_END_SELECT);
 658                 cur.macroModeClose();
 659                 cur.clearTargetX();
 660                 if (cur.pos() != cur.lastpos()) {
 661                         cur.pos() = cur.lastpos();
 662                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 663                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 664                         cur.pos() = cur.lastpos();
 665                 } else if (cur.idx() != cur.lastidx()) {
 666                         cur.idx() = cur.lastidx();
 667                         cur.pos() = cur.lastpos();
 668                 } else {
 669                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 670                         cur.undispatched();
 671                 }
 672                 break;
 673
 674         case LFUN_SCREEN_UP_SELECT:
 675         case LFUN_SCREEN_UP:
 676                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 677                 cur.undispatched();
 678                 break;
 679
 680         case LFUN_SCREEN_DOWN_SELECT:
 681         case LFUN_SCREEN_DOWN:
 682                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 683                 cur.undispatched();
 684                 break;
 685
 686         case LFUN_CELL_FORWARD:
 687                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 688                 cur.inset().idxNext(cur);
 689                 break;
 690
 691         case LFUN_CELL_BACKWARD:
 692                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 693                 cur.inset().idxPrev(cur);
 694                 break;
 695
 696         case LFUN_WORD_DELETE_BACKWARD:
 697         case LFUN_CHAR_DELETE_BACKWARD:
 698                 if (cur.pos() == 0)
 699                         // May affect external cell:
 700                         recordUndoInset(cur, Undo::ATOMIC);
 701                 else
 702                         recordUndo(cur, Undo::ATOMIC);
 703                 // if the inset can not be removed from within, delete it
 704                 if (!cur.backspace()) {
 705                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 706                         cur.innerText()->dispatch(cur, cmd);
 707                 }
 708                 break;
 709
 710         case LFUN_WORD_DELETE_FORWARD:
 711         case LFUN_CHAR_DELETE_FORWARD:
 712                 if (cur.pos() == cur.lastpos())
 713                         // May affect external cell:
 714                         recordUndoInset(cur, Undo::ATOMIC);
 715                 else
 716                         recordUndo(cur, Undo::ATOMIC);
 717                 // if the inset can not be removed from within, delete it
 718                 if (!cur.erase()) {
 719                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 720                         cur.innerText()->dispatch(cur, cmd);
 721                 }
 722                 break;
 723
 724         case LFUN_ESCAPE:
 725                 if (cur.selection())
 726                         cur.clearSelection();
 727                 else  {
 728                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 729                         cur.undispatched();
 730                 }
 731                 break;
 732
 733         case LFUN_INSET_TOGGLE:
 734                 recordUndo(cur);
 735                 lock(!lock());
 736                 cur.popRight();
 737                 break;
 738
 739         case LFUN_SELF_INSERT:
 740                 if (cmd.argument().size() != 1) {
 741                         recordUndo(cur);
 742                         docstring const arg = cmd.argument();
 743                         if (!interpretString(cur, arg))
 744                                 cur.insert(arg);
 745                         break;
 746                 }
 747                 // Don't record undo steps if we are in macro mode and
 748                 // cmd.argument is the next character of the macro name.
 749                 // Otherwise we'll get an invalid cursor if we undo after
 750                 // the macro was finished and the macro is a known command,
 751                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 752                 // the InsetMathUnknown with name "frac" by an empty
 753                 // InsetMathFrac -> a pos value > 0 is invalid.
 754                 // A side effect is that an undo before the macro is finished
 755                 // undoes the complete macro, not only the last character.
 756                 if (!cur.inMacroMode())
 757                         recordUndo(cur);
 758
 759                 // spacial handling of space. If we insert an inset
 760                 // via macro mode, we want to put the cursor inside it
 761                 // if relevant. Think typing "\frac<space>".
 762                 if (cmd.argument()[0] == ' '
 763                     && cur.inMacroMode() && cur.macroName() != "\\"
 764                     && cur.macroModeClose()) {
 765                         MathAtom const atom = cur.prevAtom();
 766                         if (atom->asNestInset() && atom->nargs() > 0) {
 767                                 cur.posLeft();
 768                                 cur.pushLeft(*cur.nextInset());
 769                         }
 770                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 771                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 772                         cur.undispatched();
 773                 }
 774                 break;
 775
 776         //case LFUN_SERVER_GET_XY:
 777         //      sprintf(dispatch_buffer, "%d %d",);
 778         //      break;
 779
 780         case LFUN_SERVER_SET_XY: {
 781                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 782                 int x = 0;
 783                 int y = 0;
 784                 istringstream is(to_utf8(cmd.argument()));
 785                 is >> x >> y;
 786                 cur.setScreenPos(x, y);
 787                 break;
 788         }
 789
 790         // Special casing for superscript in case of LyX handling
 791         // dead-keys:
 792         case LFUN_ACCENT_CIRCUMFLEX:
 793                 if (cmd.argument().empty()) {
 794                         // do superscript if LyX handles
 795                         // deadkeys
 796                         recordUndo(cur, Undo::ATOMIC);
 797                         script(cur, true, grabAndEraseSelection(cur));
 798                 }
 799                 break;
 800
 801         case LFUN_ACCENT_UMLAUT:
 802         case LFUN_ACCENT_ACUTE:
 803         case LFUN_ACCENT_GRAVE:
 804         case LFUN_ACCENT_BREVE:
 805         case LFUN_ACCENT_DOT:
 806         case LFUN_ACCENT_MACRON:
 807         case LFUN_ACCENT_CARON:
 808         case LFUN_ACCENT_TILDE:
 809         case LFUN_ACCENT_CEDILLA:
 810         case LFUN_ACCENT_CIRCLE:
 811         case LFUN_ACCENT_UNDERDOT:
 812         case LFUN_ACCENT_TIE:
 813         case LFUN_ACCENT_OGONEK:
 814         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 815                 break;
 816
 817         //  Math fonts
 818         case LFUN_FONT_FREE_APPLY:
 819         case LFUN_FONT_FREE_UPDATE:
 820                 handleFont2(cur, cmd.argument());
 821                 break;
 822
 823         case LFUN_FONT_BOLD:
 824                 if (currentMode() == TEXT_MODE)
 825                         handleFont(cur, cmd.argument(), "textbf");
 826                 else
 827                         handleFont(cur, cmd.argument(), "mathbf");
 828                 break;
 829         case LFUN_FONT_SANS:
 830                 if (currentMode() == TEXT_MODE)
 831                         handleFont(cur, cmd.argument(), "textsf");
 832                 else
 833                         handleFont(cur, cmd.argument(), "mathsf");
 834                 break;
 835         case LFUN_FONT_EMPH:
 836                 if (currentMode() == TEXT_MODE)
 837                         handleFont(cur, cmd.argument(), "emph");
 838                 else
 839                         handleFont(cur, cmd.argument(), "mathcal");
 840                 break;
 841         case LFUN_FONT_ROMAN:
 842                 if (currentMode() == TEXT_MODE)
 843                         handleFont(cur, cmd.argument(), "textrm");
 844                 else
 845                         handleFont(cur, cmd.argument(), "mathrm");
 846                 break;
 847         case LFUN_FONT_CODE:
 848                 if (currentMode() == TEXT_MODE)
 849                         handleFont(cur, cmd.argument(), "texttt");
 850                 else
 851                         handleFont(cur, cmd.argument(), "mathtt");
 852                 break;
 853         case LFUN_FONT_FRAK:
 854                 handleFont(cur, cmd.argument(), "mathfrak");
 855                 break;
 856         case LFUN_FONT_ITAL:
 857                 if (currentMode() == TEXT_MODE)
 858                         handleFont(cur, cmd.argument(), "textit");
 859                 else
 860                         handleFont(cur, cmd.argument(), "mathit");
 861                 break;
 862         case LFUN_FONT_NOUN:
 863                 if (currentMode() == TEXT_MODE)
 864                         // FIXME: should be "noun"
 865                         handleFont(cur, cmd.argument(), "textsc");
 866                 else
 867                         handleFont(cur, cmd.argument(), "mathbb");
 868                 break;
 869         /*
 870         case LFUN_FONT_FREE_APPLY:
 871                 handleFont(cur, cmd.argument(), "textrm");
 872                 break;
 873         */
 874         case LFUN_FONT_DEFAULT:
 875                 handleFont(cur, cmd.argument(), "textnormal");
 876                 break;
 877
 878         case LFUN_MATH_MODE: {
 879 #if 1
 880                 // ignore math-mode on when already in math mode
 881                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 882                         break;
 883                 cur.macroModeClose();
 884                 docstring const save_selection = grabAndEraseSelection(cur);
 885                 selClearOrDel(cur);
 886                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 887                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 888                 cur.posLeft();
 889                 cur.pushLeft(*cur.nextInset());
 890                 cur.niceInsert(save_selection);
 891 #else
 892                 if (currentMode() == Inset::TEXT_MODE) {
 893                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 894                         cur.message(_("create new math text environment ($...$)"));
 895                 } else {
 896                         handleFont(cur, cmd.argument(), "textrm");
 897                         cur.message(_("entered math text mode (textrm)"));
 898                 }
 899 #endif
 900                 break;
 901         }
 902
 903         case LFUN_MATH_SIZE:
 904 #if 0
 905                 recordUndo(cur);
 906                 cur.setSize(arg);
 907 #endif
 908                 break;
 909
 910         case LFUN_MATH_MATRIX: {
 911                 recordUndo(cur, Undo::ATOMIC);
 912                 unsigned int m = 1;
 913                 unsigned int n = 1;
 914                 docstring v_align;
 915                 docstring h_align;
 916                 idocstringstream is(cmd.argument());
 917                 is >> m >> n >> v_align >> h_align;
 918                 if (m < 1)
 919                         m = 1;
 920                 if (n < 1)
 921                         n = 1;
 922                 v_align += 'c';
 923                 cur.niceInsert(
 924                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 925                 break;
 926         }
 927
 928         case LFUN_MATH_DELIM: {
 929                 docstring ls;
 930                 docstring rs = support::split(cmd.argument(), ls, ' ');
 931                 // Reasonable default values
 932                 if (ls.empty())
 933                         ls = '(';
 934                 if (rs.empty())
 935                         rs = ')';
 936                 recordUndo(cur, Undo::ATOMIC);
 937                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 938                 break;
 939         }
 940
 941         case LFUN_MATH_BIGDELIM: {
 942                 docstring const lname  = from_utf8(cmd.getArg(0));
 943                 docstring const ldelim = from_utf8(cmd.getArg(1));
 944                 docstring const rname  = from_utf8(cmd.getArg(2));
 945                 docstring const rdelim = from_utf8(cmd.getArg(3));
 946                 latexkeys const * l = in_word_set(lname);
 947                 bool const have_l = l && l->inset == "big" &&
 948                                     InsetMathBig::isBigInsetDelim(ldelim);
 949                 l = in_word_set(rname);
 950                 bool const have_r = l && l->inset == "big" &&
 951                                     InsetMathBig::isBigInsetDelim(rdelim);
 952                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 953                 // or right delimiter.
 954                 if (have_l || have_r) {
 955                         recordUndo(cur, Undo::ATOMIC);
 956                         docstring const selection = grabAndEraseSelection(cur);
 957                         selClearOrDel(cur);
 958                         if (have_l)
 959                                 cur.insert(MathAtom(new InsetMathBig(lname,
 960                                                                 ldelim)));
 961                         cur.niceInsert(selection);
 962                         if (have_r)
 963                                 cur.insert(MathAtom(new InsetMathBig(rname,
 964                                                                 rdelim)));
 965                 }
 966                 // Don't call cur.undispatched() if we did nothing, this would
 967                 // lead to infinite recursion via Text::dispatch().
 968                 break;
 969         }
 970
 971         case LFUN_SPACE_INSERT:
 972         case LFUN_MATH_SPACE:
 973                 recordUndo(cur, Undo::ATOMIC);
 974                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 975                 break;
 976
 977         case LFUN_ERT_INSERT:
 978                 // interpret this as if a backslash was typed
 979                 recordUndo(cur, Undo::ATOMIC);
 980                 interpretChar(cur, '\\');
 981                 break;
 982
 983         case LFUN_MATH_SUBSCRIPT:
 984                 // interpret this as if a _ was typed
 985                 recordUndo(cur, Undo::ATOMIC);
 986                 interpretChar(cur, '_');
 987                 break;
 988
 989         case LFUN_MATH_SUPERSCRIPT:
 990                 // interpret this as if a ^ was typed
 991                 recordUndo(cur, Undo::ATOMIC);
 992                 interpretChar(cur, '^');
 993                 break;
 994
 995         case LFUN_QUOTE_INSERT:
 996                 // interpret this as if a straight " was typed
 997                 recordUndo(cur, Undo::ATOMIC);
 998                 interpretChar(cur, '\"');
 999                 break;
1000
1001 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1002 // handling such that "self-insert" works on "arbitrary stuff" too, and
1003 // math-insert only handles special math things like "matrix".
1004         case LFUN_MATH_INSERT: {
1005                 recordUndo(cur, Undo::ATOMIC);
1006                 if (cmd.argument() == "^" || cmd.argument() == "_") {
1007                         interpretChar(cur, cmd.argument()[0]);
1008                 } else
1009                         cur.niceInsert(cmd.argument());
1010                 break;
1011                 }
1012
1013         case LFUN_DIALOG_SHOW_NEW_INSET: {
1014                 docstring const & name = cmd.argument();
1015                 string data;
1016                 if (name == "ref") {
1017                         InsetMathRef tmp(name);
1018                         data = tmp.createDialogStr(to_utf8(name));
1019                 }
1020                 cur.bv().showInsetDialog(to_utf8(name), data, 0);
1021                 break;
1022         }
1023
1024         case LFUN_INSET_INSERT: {
1025                 MathData ar;
1026                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1027                         recordUndo(cur);
1028                         cur.insert(ar);
1029                 } else
1030                         cur.undispatched();
1031                 break;
1032         }
1033
1034         default:
1035                 InsetMath::doDispatch(cur, cmd);
1036                 break;
1037         }
1038 }
1039
1040
1041 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1042                 FuncStatus & flag) const
1043 {
1044         // the font related toggles
1045         //string tc = "mathnormal";
1046         bool ret = true;
1047         string const arg = to_utf8(cmd.argument());
1048         switch (cmd.action) {
1049         case LFUN_TABULAR_FEATURE:
1050                 flag.enabled(false);
1051                 break;
1052 #if 0
1053         case LFUN_TABULAR_FEATURE:
1054                 // FIXME: check temporarily disabled
1055                 // valign code
1056                 char align = mathcursor::valign();
1057                 if (align == '\0') {
1058                         enable = false;
1059                         break;
1060                 }
1061                 if (cmd.argument().empty()) {
1062                         flag.clear();
1063                         break;
1064                 }
1065                 if (!contains("tcb", cmd.argument()[0])) {
1066                         enable = false;
1067                         break;
1068                 }
1069                 flag.setOnOff(cmd.argument()[0] == align);
1070                 break;
1071 #endif
1072         /// We have to handle them since 1.4 blocks all unhandled actions
1073         case LFUN_FONT_ITAL:
1074         case LFUN_FONT_BOLD:
1075         case LFUN_FONT_SANS:
1076         case LFUN_FONT_EMPH:
1077         case LFUN_FONT_CODE:
1078         case LFUN_FONT_NOUN:
1079         case LFUN_FONT_ROMAN:
1080         case LFUN_FONT_DEFAULT:
1081                 flag.enabled(true);
1082                 break;
1083         case LFUN_MATH_MUTATE:
1084                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1085                 flag.setOnOff(false);
1086                 break;
1087
1088         // we just need to be in math mode to enable that
1089         case LFUN_MATH_SIZE:
1090         case LFUN_MATH_SPACE:
1091         case LFUN_MATH_LIMITS:
1092         case LFUN_MATH_NONUMBER:
1093         case LFUN_MATH_NUMBER:
1094         case LFUN_MATH_EXTERN:
1095                 flag.enabled(true);
1096                 break;
1097
1098         case LFUN_FONT_FRAK:
1099                 flag.enabled(currentMode() != TEXT_MODE);
1100                 break;
1101
1102         case LFUN_MATH_INSERT: {
1103                 bool const textarg =
1104                         arg == "\\textbf"   || arg == "\\textsf" ||
1105                         arg == "\\textrm"   || arg == "\\textmd" ||
1106                         arg == "\\textit"   || arg == "\\textsc" ||
1107                         arg == "\\textsl"   || arg == "\\textup" ||
1108                         arg == "\\texttt"   || arg == "\\textbb" ||
1109                         arg == "\\textnormal";
1110                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1111                 break;
1112         }
1113
1114         case LFUN_MATH_MATRIX:
1115                 flag.enabled(currentMode() == MATH_MODE);
1116                 break;
1117
1118         case LFUN_INSET_INSERT: {
1119                 // Don't test createMathInset_fromDialogStr(), since
1120                 // getStatus is not called with a valid reference and the
1121                 // dialog would not be applyable.
1122                 string const name = cmd.getArg(0);
1123                 flag.enabled(name == "ref");
1124                 break;
1125         }
1126
1127         case LFUN_MATH_DELIM:
1128         case LFUN_MATH_BIGDELIM:
1129                 // Don't do this with multi-cell selections
1130                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1131                 break;
1132
1133         case LFUN_HYPHENATION_POINT_INSERT:
1134         case LFUN_LIGATURE_BREAK_INSERT:
1135         case LFUN_MENU_SEPARATOR_INSERT:
1136         case LFUN_DOTS_INSERT:
1137         case LFUN_END_OF_SENTENCE_PERIOD_INSERT:
1138                 // FIXME: These would probably make sense in math-text mode
1139                 flag.enabled(false);
1140                 break;
1141
1142         default:
1143                 ret = false;
1144                 break;
1145         }
1146         return ret;
1147 }
1148
1149
1150 void InsetMathNest::edit(Cursor & cur, bool left)
1151 {
1152         cur.push(*this);
1153         cur.idx() = left ? 0 : cur.lastidx();
1154         cur.pos() = left ? 0 : cur.lastpos();
1155         cur.resetAnchor();
1156         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1157 }
1158
1159
1160 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1161 {
1162         int idx_min = 0;
1163         int dist_min = 1000000;
1164         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1165                 int const d = cell(i).dist(cur.bv(), x, y);
1166                 if (d < dist_min) {
1167                         dist_min = d;
1168                         idx_min = i;
1169                 }
1170         }
1171         MathData & ar = cell(idx_min);
1172         cur.push(*this);
1173         cur.idx() = idx_min;
1174         cur.pos() = ar.x2pos(x - ar.xo(cur.bv()));
1175
1176         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1177         if (dist_min == 0) {
1178                 // hit inside cell
1179                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1180                         if (ar[i]->covers(cur.bv(), x, y))
1181                                 return ar[i].nucleus()->editXY(cur, x, y);
1182         }
1183         return this;
1184 }
1185
1186
1187 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1188 {
1189         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1190         BufferView & bv = cur.bv();
1191         if (cmd.button() == mouse_button::button1) {
1192                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1193                 bv.mouseSetCursor(cur);
1194                 // Update the cursor update flags as needed:
1195                 //
1196                 // Update::Decoration: tells to update the decoration (visual box
1197                 //                     corners that define the inset)/
1198                 // Update::FitCursor: adjust the screen to the cursor position if
1199                 //                    needed
1200                 // cur.result().update(): don't overwrite previously set flags.
1201                 cur.updateFlags(Update::Decoration | Update::FitCursor | cur.result().update());
1202         } else if (cmd.button() == mouse_button::button2) {
1203                 MathData ar;
1204                 if (cap::selection()) {
1205                         // See comment in Text::dispatch why we do this
1206                         cap::copySelectionToStack();
1207                         cmd = FuncRequest(LFUN_PASTE, "0");
1208                         doDispatch(cur, cmd);
1209                 } else
1210                         asArray(theSelection().get(), ar);
1211
1212                 cur.insert(ar);
1213                 bv.mouseSetCursor(cur);
1214         }
1215 }
1216
1217
1218 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1219 {
1220         // only select with button 1
1221         if (cmd.button() == mouse_button::button1) {
1222                 Cursor & bvcur = cur.bv().cursor();
1223                 if (bvcur.anchor_.hasPart(cur)) {
1224                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1225                         bvcur.setCursor(cur);
1226                         bvcur.selection() = true;
1227                         //lyxerr << "MOTION " << bvcur << endl;
1228                 } else
1229                         cur.undispatched();
1230         }
1231 }
1232
1233
1234 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1235 {
1236         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1237
1238         if (cmd.button() == mouse_button::button1) {
1239                 if (!cur.selection())
1240                         cur.noUpdate();
1241                 else {
1242                         Cursor & bvcur = cur.bv().cursor();
1243                         bvcur.selection() = true;
1244                         cap::saveSelection(bvcur);
1245                 }
1246                 return;
1247         }
1248
1249         cur.undispatched();
1250 }
1251
1252
1253 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1254 {
1255         //lyxerr << "interpret 2: '" << c << "'" << endl;
1256         docstring save_selection;
1257         if (c == '^' || c == '_')
1258                 save_selection = grabAndEraseSelection(cur);
1259
1260         cur.clearTargetX();
1261
1262         // handle macroMode
1263         if (cur.inMacroMode()) {
1264                 docstring name = cur.macroName();
1265
1266                 /// are we currently typing '#1' or '#2' or...?
1267                 if (name == "\\#") {
1268                         cur.backspace();
1269                         int n = c - '0';
1270                         if (n >= 1 && n <= 9)
1271                                 cur.insert(new MathMacroArgument(n));
1272                         return true;
1273                 }
1274
1275                 if (isAlphaASCII(c)) {
1276                         cur.activeMacro()->setName(name + docstring(1, c));
1277                         return true;
1278                 }
1279
1280                 // handle 'special char' macros
1281                 if (name == "\\") {
1282                         // remove the '\\'
1283                         if (c == '\\') {
1284                                 cur.backspace();
1285                                 if (currentMode() == InsetMath::TEXT_MODE)
1286                                         cur.niceInsert(createInsetMath("textbackslash"));
1287                                 else
1288                                         cur.niceInsert(createInsetMath("backslash"));
1289                         } else if (c == '{') {
1290                                 cur.backspace();
1291                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1292                         } else if (c == '%') {
1293                                 cur.backspace();
1294                                 cur.niceInsert(MathAtom(new InsetMathComment));
1295                         } else if (c == '#') {
1296                                 BOOST_ASSERT(cur.activeMacro());
1297                                 cur.activeMacro()->setName(name + docstring(1, c));
1298                         } else {
1299                                 cur.backspace();
1300                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1301                         }
1302                         return true;
1303                 }
1304
1305                 // One character big delimiters. The others are handled in
1306                 // interpretString().
1307                 latexkeys const * l = in_word_set(name.substr(1));
1308                 if (name[0] == '\\' && l && l->inset == "big") {
1309                         docstring delim;
1310                         switch (c) {
1311                         case '{':
1312                                 delim = from_ascii("\\{");
1313                                 break;
1314                         case '}':
1315                                 delim = from_ascii("\\}");
1316                                 break;
1317                         default:
1318                                 delim = docstring(1, c);
1319                                 break;
1320                         }
1321                         if (InsetMathBig::isBigInsetDelim(delim)) {
1322                                 // name + delim ared a valid InsetMathBig.
1323                                 // We can't use cur.macroModeClose() because
1324                                 // it does not handle delim.
1325                                 InsetMathUnknown * p = cur.activeMacro();
1326                                 p->finalize();
1327                                 --cur.pos();
1328                                 cur.cell().erase(cur.pos());
1329                                 cur.plainInsert(MathAtom(
1330                                         new InsetMathBig(name.substr(1), delim)));
1331                                 return true;
1332                         }
1333                 }
1334
1335                 // leave macro mode and try again if necessary
1336                 cur.macroModeClose();
1337                 if (c == '{')
1338                         cur.niceInsert(MathAtom(new InsetMathBrace));
1339                 else if (c != ' ')
1340                         interpretChar(cur, c);
1341                 return true;
1342         }
1343
1344         // This is annoying as one has to press <space> far too often.
1345         // Disable it.
1346
1347 #if 0
1348                 // leave autocorrect mode if necessary
1349                 if (autocorrect() && c == ' ') {
1350                         autocorrect() = false;
1351                         return true;
1352                 }
1353 #endif
1354
1355         // just clear selection on pressing the space bar
1356         if (cur.selection() && c == ' ') {
1357                 cur.selection() = false;
1358                 return true;
1359         }
1360
1361         selClearOrDel(cur);
1362
1363         if (c == '\\') {
1364                 //lyxerr << "starting with macro" << endl;
1365                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), false)));
1366                 return true;
1367         }
1368
1369         if (c == '\n') {
1370                 if (currentMode() == InsetMath::TEXT_MODE)
1371                         cur.insert(c);
1372                 return true;
1373         }
1374
1375         if (c == ' ') {
1376                 if (currentMode() == InsetMath::TEXT_MODE) {
1377                         // insert spaces in text mode,
1378                         // but suppress direct insertion of two spaces in a row
1379                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1380                         // it is better than nothing...
1381                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1382                                 cur.insert(c);
1383                                 // FIXME: we have to enable full redraw here because of the
1384                                 // visual box corners that define the inset. If we know for
1385                                 // sure that we stay within the same cell we can optimize for
1386                                 // that using:
1387                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1388                         }
1389                         return true;
1390                 }
1391                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1392                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1393                         // FIXME: we have to enable full redraw here because of the
1394                         // visual box corners that define the inset. If we know for
1395                         // sure that we stay within the same cell we can optimize for
1396                         // that using:
1397                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1398                         return true;
1399                 }
1400
1401                 if (cur.popRight()) {
1402                         // FIXME: we have to enable full redraw here because of the
1403                         // visual box corners that define the inset. If we know for
1404                         // sure that we stay within the same cell we can optimize for
1405                         // that using:
1406                         //cur.updateFlags(Update::FitCursor);
1407                         return true;
1408                 }
1409
1410                 // if we are at the very end, leave the formula
1411                 return cur.pos() != cur.lastpos();
1412         }
1413
1414         // These shouldn't work in text mode:
1415         if (currentMode() != InsetMath::TEXT_MODE) {
1416                 if (c == '_') {
1417                         script(cur, false, save_selection);
1418                         return true;
1419                 }
1420                 if (c == '^') {
1421                         script(cur, true, save_selection);
1422                         return true;
1423                 }
1424                 if (c == '~') {
1425                         cur.niceInsert(createInsetMath("sim"));
1426                         return true;
1427                 }
1428         }
1429
1430         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1431             c == '%' || c == '_' || c == '^') {
1432                 cur.niceInsert(createInsetMath(docstring(1, c)));
1433                 return true;
1434         }
1435
1436
1437         // try auto-correction
1438         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1439         //      return true;
1440
1441         // no special circumstances, so insert the character without any fuss
1442         cur.insert(c);
1443         cur.autocorrect() = true;
1444         return true;
1445 }
1446
1447
1448 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1449 {
1450         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1451         // possible
1452         if (!cur.empty() && cur.pos() > 0 &&
1453             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1454                 if (InsetMathBig::isBigInsetDelim(str)) {
1455                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1456                         if (prev[0] == '\\') {
1457                                 prev = prev.substr(1);
1458                                 latexkeys const * l = in_word_set(prev);
1459                                 if (l && l->inset == "big") {
1460                                         cur.cell()[cur.pos() - 1] =
1461                                                 MathAtom(new InsetMathBig(prev, str));
1462                                         return true;
1463                                 }
1464                         }
1465                 }
1466         }
1467         return false;
1468 }
1469
1470
1471 bool InsetMathNest::script(Cursor & cur, bool up,
1472                 docstring const & save_selection)
1473 {
1474         // Hack to get \^ and \_ working
1475         //lyxerr << "handling script: up: " << up << endl;
1476         if (cur.inMacroMode() && cur.macroName() == "\\") {
1477                 if (up)
1478                         cur.niceInsert(createInsetMath("mathcircumflex"));
1479                 else
1480                         interpretChar(cur, '_');
1481                 return true;
1482         }
1483
1484         cur.macroModeClose();
1485         if (asScriptInset() && cur.idx() == 0) {
1486                 // we are in a nucleus of a script inset, move to _our_ script
1487                 InsetMathScript * inset = asScriptInset();
1488                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1489                 inset->ensure(up);
1490                 cur.idx() = inset->idxOfScript(up);
1491                 cur.pos() = 0;
1492         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1493                 --cur.pos();
1494                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1495                 cur.push(*inset);
1496                 inset->ensure(up);
1497                 cur.idx() = inset->idxOfScript(up);
1498                 cur.pos() = cur.lastpos();
1499         } else {
1500                 // convert the thing to our left to a scriptinset or create a new
1501                 // one if in the very first position of the array
1502                 if (cur.pos() == 0) {
1503                         //lyxerr << "new scriptinset" << endl;
1504                         cur.insert(new InsetMathScript(up));
1505                 } else {
1506                         //lyxerr << "converting prev atom " << endl;
1507                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1508                 }
1509                 --cur.pos();
1510                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1511                 // See comment in MathParser.cpp for special handling of {}-bases
1512
1513                 cur.push(*inset);
1514                 cur.idx() = 1;
1515                 cur.pos() = 0;
1516         }
1517         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1518         cur.niceInsert(save_selection);
1519         cur.resetAnchor();
1520         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1521         return true;
1522 }
1523
1524
1525 } // namespace lyx