src/mathed/InsetMathNest.cpp

   1 /**
   2  * \file InsetMathNest.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathNest.h"
  14
  15 #include "InsetMathArray.h"
  16 #include "InsetMathBig.h"
  17 #include "InsetMathBox.h"
  18 #include "InsetMathBrace.h"
  19 #include "InsetMathColor.h"
  20 #include "InsetMathComment.h"
  21 #include "InsetMathDelim.h"
  22 #include "InsetMathHull.h"
  23 //#include "InsetMathMBox.h"
  24 #include "InsetMathRef.h"
  25 #include "InsetMathScript.h"
  26 #include "InsetMathSpace.h"
  27 #include "InsetMathSymbol.h"
  28 #include "InsetMathUnknown.h"
  29 #include "MathData.h"
  30 #include "MathFactory.h"
  31 #include "MathMacroArgument.h"
  32 #include "MathParser.h"
  33 #include "MathStream.h"
  34 #include "MathSupport.h"
  35
  36 #include "Bidi.h"
  37 #include "BufferView.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
  50 #include "support/lstrings.h"
  51 #include "support/textutils.h"
  52
  53 #include "frontends/Clipboard.h"
  54 #include "frontends/Painter.h"
  55 #include "frontends/Selection.h"
  56
  57 #include "FuncRequest.h"
  58
  59 #include <sstream>
  60
  61
  62 namespace lyx {
  63
  64 using cap::copySelection;
  65 using cap::grabAndEraseSelection;
  66 using cap::cutSelection;
  67 using cap::replaceSelection;
  68 using cap::selClearOrDel;
  69
  70 using std::endl;
  71 using std::string;
  72 using std::istringstream;
  73
  74
  75 InsetMathNest::InsetMathNest(idx_type nargs)
  76         : cells_(nargs), lock_(false), mouse_hover_(false)
  77 {}
  78
  79
  80 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  81         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_),
  82           mouse_hover_(false)
  83 {}
  84
  85
  86 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
  87 {
  88         cells_ = inset.cells_;
  89         lock_ = inset.lock_;
  90         mouse_hover_ = false;
  91         InsetMath::operator=(inset);
  92         return *this;
  93 }
  94
  95
  96 InsetMath::idx_type InsetMathNest::nargs() const
  97 {
  98         return cells_.size();
  99 }
 100
 101
 102 void InsetMathNest::cursorPos(BufferView const & bv,
 103                 CursorSlice const & sl, bool /*boundary*/,
 104                 int & x, int & y) const
 105 {
 106 // FIXME: This is a hack. Ideally, the coord cache should not store
 107 // absolute positions, but relative ones. This would mean to call
 108 // setXY() not in MathData::draw(), but in the parent insets' draw()
 109 // with the correctly adjusted x,y values. But this means that we'd have
 110 // to touch all (math)inset's draw() methods. Right now, we'll store
 111 // absolute value, and make them here relative, only to make them
 112 // absolute again when actually drawing the cursor. What a mess.
 113         BOOST_ASSERT(ptr_cmp(&sl.inset(), this));
 114         MathData const & ar = sl.cell();
 115         CoordCache const & coord_cache = bv.coordCache();
 116         if (!coord_cache.getArrays().has(&ar)) {
 117                 // this can (semi-)legally happen if we just created this cell
 118                 // and it never has been drawn before. So don't ASSERT.
 119                 //lyxerr << "no cached data for array " << &ar << endl;
 120                 x = 0;
 121                 y = 0;
 122                 return;
 123         }
 124         Point const pt = coord_cache.getArrays().xy(&ar);
 125         if (!coord_cache.getInsets().has(this)) {
 126                 // same as above
 127                 //lyxerr << "no cached data for inset " << this << endl;
 128                 x = 0;
 129                 y = 0;
 130                 return;
 131         }
 132         Point const pt2 = coord_cache.getInsets().xy(this);
 133         //lyxerr << "retrieving position cache for MathData "
 134         //      << pt.x_ << ' ' << pt.y_ << std::endl;
 135         x = pt.x_ - pt2.x_ + ar.pos2x(sl.pos());
 136         y = pt.y_ - pt2.y_;
 137 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 138 //              << " asc: " << ascent() << "  des: " << descent()
 139 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 140         // move cursor visually into empty cells ("blue rectangles");
 141         if (ar.empty())
 142                 x += 2;
 143 }
 144
 145
 146 void InsetMathNest::metrics(MetricsInfo const & mi) const
 147 {
 148         MetricsInfo m = mi;
 149         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 150                 Dimension dim;
 151                 cell(i).metrics(m, dim);
 152         }
 153 }
 154
 155
 156 bool InsetMathNest::idxNext(Cursor & cur) const
 157 {
 158         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 159         if (cur.idx() == cur.lastidx())
 160                 return false;
 161         ++cur.idx();
 162         cur.pos() = 0;
 163         return true;
 164 }
 165
 166
 167 bool InsetMathNest::idxRight(Cursor & cur) const
 168 {
 169         return idxNext(cur);
 170 }
 171
 172
 173 bool InsetMathNest::idxPrev(Cursor & cur) const
 174 {
 175         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 176         if (cur.idx() == 0)
 177                 return false;
 178         --cur.idx();
 179         cur.pos() = cur.lastpos();
 180         return true;
 181 }
 182
 183
 184 bool InsetMathNest::idxLeft(Cursor & cur) const
 185 {
 186         return idxPrev(cur);
 187 }
 188
 189
 190 bool InsetMathNest::idxFirst(Cursor & cur) const
 191 {
 192         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 193         if (nargs() == 0)
 194                 return false;
 195         cur.idx() = 0;
 196         cur.pos() = 0;
 197         return true;
 198 }
 199
 200
 201 bool InsetMathNest::idxLast(Cursor & cur) const
 202 {
 203         BOOST_ASSERT(ptr_cmp(&cur.inset(), this));
 204         if (nargs() == 0)
 205                 return false;
 206         cur.idx() = cur.lastidx();
 207         cur.pos() = cur.lastpos();
 208         return true;
 209 }
 210
 211
 212 void InsetMathNest::dump() const
 213 {
 214         odocstringstream oss;
 215         WriteStream os(oss);
 216         os << "---------------------------------------------\n";
 217         write(os);
 218         os << "\n";
 219         for (idx_type i = 0, n = nargs(); i != n; ++i)
 220                 os << cell(i) << "\n";
 221         os << "---------------------------------------------\n";
 222         lyxerr << to_utf8(oss.str());
 223 }
 224
 225
 226 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 227 {
 228 #if 0
 229         if (lock_)
 230                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 231                                         Color::mathlockbg);
 232 #endif
 233         setPosCache(pi, x, y);
 234 }
 235
 236
 237 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 238 {
 239         BufferView & bv = *pi.base.bv;
 240         // this should use the x/y values given, not the cached values
 241         Cursor & cur = bv.cursor();
 242         if (!cur.selection())
 243                 return;
 244         if (!ptr_cmp(&cur.inset(), this))
 245                 return;
 246
 247         // FIXME: hack to get position cache warm
 248         pi.pain.setDrawingEnabled(false);
 249         draw(pi, x, y);
 250         pi.pain.setDrawingEnabled(true);
 251
 252         CursorSlice s1 = cur.selBegin();
 253         CursorSlice s2 = cur.selEnd();
 254
 255         //lyxerr << "InsetMathNest::drawing selection: "
 256         //      << " s1: " << s1 << " s2: " << s2 << endl;
 257         if (s1.idx() == s2.idx()) {
 258                 MathData const & c = cell(s1.idx());
 259                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 260                 int x1 = g.pos.x_ + c.pos2x(s1.pos());
 261                 int y1 = g.pos.y_ - g.dim.ascent();
 262                 int x2 = g.pos.x_ + c.pos2x(s2.pos());
 263                 int y2 = g.pos.y_ + g.dim.descent();
 264                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color::selection);
 265         //lyxerr << "InsetMathNest::drawing selection 3: "
 266         //      << " x1: " << x1 << " x2: " << x2
 267         //      << " y1: " << y1 << " y2: " << y2 << endl;
 268         } else {
 269                 for (idx_type i = 0; i < nargs(); ++i) {
 270                         if (idxBetween(i, s1.idx(), s2.idx())) {
 271                                 MathData const & c = cell(i);
 272                                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 273                                 int x1 = g.pos.x_;
 274                                 int y1 = g.pos.y_ - g.dim.ascent();
 275                                 int x2 = g.pos.x_ + g.dim.width();
 276                                 int y2 = g.pos.y_ + g.dim.descent();
 277                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color::selection);
 278                         }
 279                 }
 280         }
 281 }
 282
 283
 284 void InsetMathNest::validate(LaTeXFeatures & features) const
 285 {
 286         for (idx_type i = 0; i < nargs(); ++i)
 287                 cell(i).validate(features);
 288 }
 289
 290
 291 void InsetMathNest::replace(ReplaceData & rep)
 292 {
 293         for (idx_type i = 0; i < nargs(); ++i)
 294                 cell(i).replace(rep);
 295 }
 296
 297
 298 bool InsetMathNest::contains(MathData const & ar) const
 299 {
 300         for (idx_type i = 0; i < nargs(); ++i)
 301                 if (cell(i).contains(ar))
 302                         return true;
 303         return false;
 304 }
 305
 306
 307 bool InsetMathNest::lock() const
 308 {
 309         return lock_;
 310 }
 311
 312
 313 void InsetMathNest::lock(bool l)
 314 {
 315         lock_ = l;
 316 }
 317
 318
 319 bool InsetMathNest::isActive() const
 320 {
 321         return nargs() > 0;
 322 }
 323
 324
 325 MathData InsetMathNest::glue() const
 326 {
 327         MathData ar;
 328         for (size_t i = 0; i < nargs(); ++i)
 329                 ar.append(cell(i));
 330         return ar;
 331 }
 332
 333
 334 void InsetMathNest::write(WriteStream & os) const
 335 {
 336         os << '\\' << name().c_str();
 337         for (size_t i = 0; i < nargs(); ++i)
 338                 os << '{' << cell(i) << '}';
 339         if (nargs() == 0)
 340                 os.pendingSpace(true);
 341         if (lock_ && !os.latex()) {
 342                 os << "\\lyxlock";
 343                 os.pendingSpace(true);
 344         }
 345 }
 346
 347
 348 void InsetMathNest::normalize(NormalStream & os) const
 349 {
 350         os << '[' << name().c_str();
 351         for (size_t i = 0; i < nargs(); ++i)
 352                 os << ' ' << cell(i);
 353         os << ']';
 354 }
 355
 356
 357 int InsetMathNest::latex(Buffer const &, odocstream & os,
 358                         OutputParams const & runparams) const
 359 {
 360         WriteStream wi(os, runparams.moving_arg, true);
 361         write(wi);
 362         return wi.line();
 363 }
 364
 365
 366 bool InsetMathNest::setMouseHover(bool mouse_hover)
 367 {
 368         mouse_hover_ = mouse_hover;
 369         return true;
 370 }
 371
 372
 373 bool InsetMathNest::notifyCursorLeaves(Cursor & /*cur*/)
 374 {
 375         // FIXME: look here
 376 #if 0
 377         MathData & ar = cur.cell();
 378         // remove base-only "scripts"
 379         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 380                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 381                 if (p && p->nargs() == 1) {
 382                         MathData ar = p->nuc();
 383                         erase(i);
 384                         insert(i, ar);
 385                         cur.adjust(i, ar.size() - 1);
 386                 }
 387         }
 388
 389         // glue adjacent font insets of the same kind
 390         for (pos_type i = 0; i + 1 < size(); ++i) {
 391                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 392                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 393                 if (p && q && p->name() == q->name()) {
 394                         p->cell(0).append(q->cell(0));
 395                         erase(i + 1);
 396                         cur.adjust(i, -1);
 397                 }
 398         }
 399 #endif
 400         return false;
 401 }
 402
 403
 404 void InsetMathNest::handleFont
 405         (Cursor & cur, docstring const & arg, char const * const font)
 406 {
 407         handleFont(cur, arg, from_ascii(font));
 408 }
 409
 410
 411 void InsetMathNest::handleFont
 412         (Cursor & cur, docstring const & arg, docstring const & font)
 413 {
 414         // this whole function is a hack and won't work for incremental font
 415         // changes...
 416
 417         if (cur.inset().asInsetMath()->name() == font) {
 418                 cur.recordUndoInset();
 419                 cur.handleFont(to_utf8(font));
 420         } else {
 421                 cur.recordUndo();
 422                 cur.handleNest(createInsetMath(font));
 423                 cur.insert(arg);
 424         }
 425 }
 426
 427
 428 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 429 {
 430         cur.recordUndo();
 431         Font font;
 432         bool b;
 433         font.fromString(to_utf8(arg), b);
 434         if (font.color() != Color::inherit) {
 435                 MathAtom at = MathAtom(new InsetMathColor(true, font.color()));
 436                 cur.handleNest(at, 0);
 437         }
 438 }
 439
 440
 441 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 442 {
 443         //lyxerr << "InsetMathNest: request: " << cmd << std::endl;
 444         //CursorSlice sl = cur.current();
 445
 446         switch (cmd.action) {
 447
 448         case LFUN_PASTE: {
 449                 cur.recordUndo();
 450                 cur.message(_("Paste"));
 451                 replaceSelection(cur);
 452                 docstring topaste;
 453                 if (cmd.argument().empty() && !theClipboard().isInternal())
 454                         topaste = theClipboard().getAsText();
 455                 else {
 456                         size_t n = 0;
 457                         idocstringstream is(cmd.argument());
 458                         is >> n;
 459                         topaste = cap::getSelection(cur.buffer(), n);
 460                 }
 461                 cur.niceInsert(topaste);
 462                 cur.clearSelection(); // bug 393
 463                 cur.finishUndo();
 464                 break;
 465         }
 466
 467         case LFUN_CUT:
 468                 cur.recordUndo();
 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_DOWN:
 550         case LFUN_UP:
 551                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 552         case LFUN_DOWN_SELECT:
 553         case LFUN_UP_SELECT: {
 554                 // close active macro
 555                 if (cur.inMacroMode()) {
 556                         cur.macroModeClose();
 557                         break;
 558                 }
 559
 560                 // stop/start the selection
 561                 bool select = cmd.action == LFUN_DOWN_SELECT ||
 562                         cmd.action == LFUN_UP_SELECT;
 563                 cur.selHandle(select);
 564
 565                 // go up/down
 566                 bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
 567                 bool successful = cur.upDownInMath(up);
 568                 if (successful) {
 569                         // notify left insets and give them chance to set update flags
 570                         lyx::notifyCursorLeaves(cur.beforeDispatchCursor(), cur);
 571                         cur.fixIfBroken();
 572                         break;
 573                 }
 574
 575                 if (cur.fixIfBroken())
 576                         // FIXME: Something bad happened. We pass the corrected Cursor
 577                         // instead of letting things go worse.
 578                         break;
 579
 580                 // We did not manage to move the cursor.
 581                 cur.undispatched();
 582                 break;
 583         }
 584
 585         case LFUN_MOUSE_DOUBLE:
 586         case LFUN_MOUSE_TRIPLE:
 587         case LFUN_WORD_SELECT:
 588                 cur.pos() = 0;
 589                 cur.idx() = 0;
 590                 cur.resetAnchor();
 591                 cur.selection() = true;
 592                 cur.pos() = cur.lastpos();
 593                 cur.idx() = cur.lastidx();
 594                 break;
 595
 596         case LFUN_PARAGRAPH_UP:
 597         case LFUN_PARAGRAPH_DOWN:
 598                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 599         case LFUN_PARAGRAPH_UP_SELECT:
 600         case LFUN_PARAGRAPH_DOWN_SELECT:
 601                 break;
 602
 603         case LFUN_LINE_BEGIN:
 604         case LFUN_WORD_BACKWARD:
 605                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 606         case LFUN_LINE_BEGIN_SELECT:
 607         case LFUN_WORD_BACKWARD_SELECT:
 608                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 609                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 610                 cur.macroModeClose();
 611                 if (cur.pos() != 0) {
 612                         cur.pos() = 0;
 613                 } else if (cur.col() != 0) {
 614                         cur.idx() -= cur.col();
 615                         cur.pos() = 0;
 616                 } else if (cur.idx() != 0) {
 617                         cur.idx() = 0;
 618                         cur.pos() = 0;
 619                 } else {
 620                         cmd = FuncRequest(LFUN_FINISHED_LEFT);
 621                         cur.undispatched();
 622                 }
 623                 break;
 624
 625         case LFUN_WORD_FORWARD:
 626         case LFUN_LINE_END:
 627                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 628         case LFUN_WORD_FORWARD_SELECT:
 629         case LFUN_LINE_END_SELECT:
 630                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 631                                 cmd.action == LFUN_LINE_END_SELECT);
 632                 cur.macroModeClose();
 633                 cur.clearTargetX();
 634                 if (cur.pos() != cur.lastpos()) {
 635                         cur.pos() = cur.lastpos();
 636                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 637                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 638                         cur.pos() = cur.lastpos();
 639                 } else if (cur.idx() != cur.lastidx()) {
 640                         cur.idx() = cur.lastidx();
 641                         cur.pos() = cur.lastpos();
 642                 } else {
 643                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 644                         cur.undispatched();
 645                 }
 646                 break;
 647
 648         case LFUN_SCREEN_UP_SELECT:
 649                 cmd = FuncRequest(LFUN_FINISHED_LEFT);
 650                 cur.undispatched();
 651                 break;
 652
 653         case LFUN_SCREEN_DOWN_SELECT:
 654                 cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 655                 cur.undispatched();
 656                 break;
 657
 658         case LFUN_CELL_FORWARD:
 659                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 660                 cur.inset().idxNext(cur);
 661                 break;
 662
 663         case LFUN_CELL_BACKWARD:
 664                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 665                 cur.inset().idxPrev(cur);
 666                 break;
 667
 668         case LFUN_WORD_DELETE_BACKWARD:
 669         case LFUN_CHAR_DELETE_BACKWARD:
 670                 if (cur.pos() == 0)
 671                         // May affect external cell:
 672                         cur.recordUndoInset();
 673                 else
 674                         cur.recordUndo();
 675                 // if the inset can not be removed from within, delete it
 676                 if (!cur.backspace()) {
 677                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 678                         cur.innerText()->dispatch(cur, cmd);
 679                 }
 680                 break;
 681
 682         case LFUN_WORD_DELETE_FORWARD:
 683         case LFUN_CHAR_DELETE_FORWARD:
 684                 if (cur.pos() == cur.lastpos())
 685                         // May affect external cell:
 686                         cur.recordUndoInset();
 687                 else
 688                         cur.recordUndo();
 689                 // if the inset can not be removed from within, delete it
 690                 if (!cur.erase()) {
 691                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 692                         cur.innerText()->dispatch(cur, cmd);
 693                 }
 694                 break;
 695
 696         case LFUN_ESCAPE:
 697                 if (cur.selection())
 698                         cur.clearSelection();
 699                 else  {
 700                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 701                         cur.undispatched();
 702                 }
 703                 break;
 704
 705         case LFUN_INSET_TOGGLE:
 706                 cur.recordUndo();
 707                 lock(!lock());
 708                 cur.popRight();
 709                 break;
 710
 711         case LFUN_SELF_INSERT:
 712                 if (cmd.argument().size() != 1) {
 713                         cur.recordUndo();
 714                         docstring const arg = cmd.argument();
 715                         if (!interpretString(cur, arg))
 716                                 cur.insert(arg);
 717                         break;
 718                 }
 719                 // Don't record undo steps if we are in macro mode and
 720                 // cmd.argument is the next character of the macro name.
 721                 // Otherwise we'll get an invalid cursor if we undo after
 722                 // the macro was finished and the macro is a known command,
 723                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 724                 // the InsetMathUnknown with name "frac" by an empty
 725                 // InsetMathFrac -> a pos value > 0 is invalid.
 726                 // A side effect is that an undo before the macro is finished
 727                 // undoes the complete macro, not only the last character.
 728                 if (!cur.inMacroMode())
 729                         cur.recordUndo();
 730
 731                 // spacial handling of space. If we insert an inset
 732                 // via macro mode, we want to put the cursor inside it
 733                 // if relevant. Think typing "\frac<space>".
 734                 if (cmd.argument()[0] == ' '
 735                     && cur.inMacroMode() && cur.macroName() != "\\"
 736                     && cur.macroModeClose()) {
 737                         MathAtom const atom = cur.prevAtom();
 738                         if (atom->asNestInset() && atom->isActive()) {
 739                                 cur.posLeft();
 740                                 cur.pushLeft(*cur.nextInset());
 741                         }
 742                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 743                         cmd = FuncRequest(LFUN_FINISHED_RIGHT);
 744                         cur.undispatched();
 745                 }
 746                 break;
 747
 748         //case LFUN_SERVER_GET_XY:
 749         //      sprintf(dispatch_buffer, "%d %d",);
 750         //      break;
 751
 752         case LFUN_SERVER_SET_XY: {
 753                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 754                 int x = 0;
 755                 int y = 0;
 756                 istringstream is(to_utf8(cmd.argument()));
 757                 is >> x >> y;
 758                 cur.setScreenPos(x, y);
 759                 break;
 760         }
 761
 762         // Special casing for superscript in case of LyX handling
 763         // dead-keys:
 764         case LFUN_ACCENT_CIRCUMFLEX:
 765                 if (cmd.argument().empty()) {
 766                         // do superscript if LyX handles
 767                         // deadkeys
 768                         cur.recordUndo();
 769                         script(cur, true, grabAndEraseSelection(cur));
 770                 }
 771                 break;
 772
 773         case LFUN_ACCENT_UMLAUT:
 774         case LFUN_ACCENT_ACUTE:
 775         case LFUN_ACCENT_GRAVE:
 776         case LFUN_ACCENT_BREVE:
 777         case LFUN_ACCENT_DOT:
 778         case LFUN_ACCENT_MACRON:
 779         case LFUN_ACCENT_CARON:
 780         case LFUN_ACCENT_TILDE:
 781         case LFUN_ACCENT_CEDILLA:
 782         case LFUN_ACCENT_CIRCLE:
 783         case LFUN_ACCENT_UNDERDOT:
 784         case LFUN_ACCENT_TIE:
 785         case LFUN_ACCENT_OGONEK:
 786         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 787                 break;
 788
 789         //  Math fonts
 790         case LFUN_FONT_FREE_APPLY:
 791         case LFUN_FONT_FREE_UPDATE:
 792                 handleFont2(cur, cmd.argument());
 793                 break;
 794
 795         case LFUN_FONT_BOLD:
 796                 if (currentMode() == TEXT_MODE)
 797                         handleFont(cur, cmd.argument(), "textbf");
 798                 else
 799                         handleFont(cur, cmd.argument(), "mathbf");
 800                 break;
 801         case LFUN_FONT_SANS:
 802                 if (currentMode() == TEXT_MODE)
 803                         handleFont(cur, cmd.argument(), "textsf");
 804                 else
 805                         handleFont(cur, cmd.argument(), "mathsf");
 806                 break;
 807         case LFUN_FONT_EMPH:
 808                 if (currentMode() == TEXT_MODE)
 809                         handleFont(cur, cmd.argument(), "emph");
 810                 else
 811                         handleFont(cur, cmd.argument(), "mathcal");
 812                 break;
 813         case LFUN_FONT_ROMAN:
 814                 if (currentMode() == TEXT_MODE)
 815                         handleFont(cur, cmd.argument(), "textrm");
 816                 else
 817                         handleFont(cur, cmd.argument(), "mathrm");
 818                 break;
 819         case LFUN_FONT_TYPEWRITER:
 820                 if (currentMode() == TEXT_MODE)
 821                         handleFont(cur, cmd.argument(), "texttt");
 822                 else
 823                         handleFont(cur, cmd.argument(), "mathtt");
 824                 break;
 825         case LFUN_FONT_FRAK:
 826                 handleFont(cur, cmd.argument(), "mathfrak");
 827                 break;
 828         case LFUN_FONT_ITAL:
 829                 if (currentMode() == TEXT_MODE)
 830                         handleFont(cur, cmd.argument(), "textit");
 831                 else
 832                         handleFont(cur, cmd.argument(), "mathit");
 833                 break;
 834         case LFUN_FONT_NOUN:
 835                 if (currentMode() == TEXT_MODE)
 836                         // FIXME: should be "noun"
 837                         handleFont(cur, cmd.argument(), "textsc");
 838                 else
 839                         handleFont(cur, cmd.argument(), "mathbb");
 840                 break;
 841         /*
 842         case LFUN_FONT_FREE_APPLY:
 843                 handleFont(cur, cmd.argument(), "textrm");
 844                 break;
 845         */
 846         case LFUN_FONT_DEFAULT:
 847                 handleFont(cur, cmd.argument(), "textnormal");
 848                 break;
 849
 850         case LFUN_MATH_MODE: {
 851 #if 1
 852                 // ignore math-mode on when already in math mode
 853                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 854                         break;
 855                 cur.macroModeClose();
 856                 docstring const save_selection = grabAndEraseSelection(cur);
 857                 selClearOrDel(cur);
 858                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 859                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 860                 cur.posLeft();
 861                 cur.pushLeft(*cur.nextInset());
 862                 cur.niceInsert(save_selection);
 863 #else
 864                 if (currentMode() == Inset::TEXT_MODE) {
 865                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 866                         cur.message(_("create new math text environment ($...$)"));
 867                 } else {
 868                         handleFont(cur, cmd.argument(), "textrm");
 869                         cur.message(_("entered math text mode (textrm)"));
 870                 }
 871 #endif
 872                 break;
 873         }
 874
 875         case LFUN_MATH_SIZE:
 876 #if 0
 877                 cur.recordUndo();
 878                 cur.setSize(arg);
 879 #endif
 880                 break;
 881
 882         case LFUN_MATH_MATRIX: {
 883                 cur.recordUndo();
 884                 unsigned int m = 1;
 885                 unsigned int n = 1;
 886                 docstring v_align;
 887                 docstring h_align;
 888                 idocstringstream is(cmd.argument());
 889                 is >> m >> n >> v_align >> h_align;
 890                 if (m < 1)
 891                         m = 1;
 892                 if (n < 1)
 893                         n = 1;
 894                 v_align += 'c';
 895                 cur.niceInsert(
 896                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 897                 break;
 898         }
 899
 900         case LFUN_MATH_DELIM: {
 901                 docstring ls;
 902                 docstring rs = support::split(cmd.argument(), ls, ' ');
 903                 // Reasonable default values
 904                 if (ls.empty())
 905                         ls = '(';
 906                 if (rs.empty())
 907                         rs = ')';
 908                 cur.recordUndo();
 909                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 910                 break;
 911         }
 912
 913         case LFUN_MATH_BIGDELIM: {
 914                 docstring const lname  = from_utf8(cmd.getArg(0));
 915                 docstring const ldelim = from_utf8(cmd.getArg(1));
 916                 docstring const rname  = from_utf8(cmd.getArg(2));
 917                 docstring const rdelim = from_utf8(cmd.getArg(3));
 918                 latexkeys const * l = in_word_set(lname);
 919                 bool const have_l = l && l->inset == "big" &&
 920                                     InsetMathBig::isBigInsetDelim(ldelim);
 921                 l = in_word_set(rname);
 922                 bool const have_r = l && l->inset == "big" &&
 923                                     InsetMathBig::isBigInsetDelim(rdelim);
 924                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 925                 // or right delimiter.
 926                 if (have_l || have_r) {
 927                         cur.recordUndo();
 928                         docstring const selection = grabAndEraseSelection(cur);
 929                         selClearOrDel(cur);
 930                         if (have_l)
 931                                 cur.insert(MathAtom(new InsetMathBig(lname,
 932                                                                 ldelim)));
 933                         cur.niceInsert(selection);
 934                         if (have_r)
 935                                 cur.insert(MathAtom(new InsetMathBig(rname,
 936                                                                 rdelim)));
 937                 }
 938                 // Don't call cur.undispatched() if we did nothing, this would
 939                 // lead to infinite recursion via Text::dispatch().
 940                 break;
 941         }
 942
 943         case LFUN_SPACE_INSERT:
 944         case LFUN_MATH_SPACE:
 945                 cur.recordUndo();
 946                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 947                 break;
 948
 949         case LFUN_ERT_INSERT:
 950                 // interpret this as if a backslash was typed
 951                 cur.recordUndo();
 952                 interpretChar(cur, '\\');
 953                 break;
 954
 955         case LFUN_MATH_SUBSCRIPT:
 956                 // interpret this as if a _ was typed
 957                 cur.recordUndo();
 958                 interpretChar(cur, '_');
 959                 break;
 960
 961         case LFUN_MATH_SUPERSCRIPT:
 962                 // interpret this as if a ^ was typed
 963                 cur.recordUndo();
 964                 interpretChar(cur, '^');
 965                 break;
 966
 967         case LFUN_QUOTE_INSERT:
 968                 // interpret this as if a straight " was typed
 969                 cur.recordUndo();
 970                 interpretChar(cur, '\"');
 971                 break;
 972
 973 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 974 // handling such that "self-insert" works on "arbitrary stuff" too, and
 975 // math-insert only handles special math things like "matrix".
 976         case LFUN_MATH_INSERT: {
 977                 cur.recordUndo();
 978                 if (cmd.argument() == "^" || cmd.argument() == "_") {
 979                         interpretChar(cur, cmd.argument()[0]);
 980                 } else
 981                         cur.niceInsert(cmd.argument());
 982                 break;
 983                 }
 984
 985         case LFUN_DIALOG_SHOW_NEW_INSET: {
 986                 docstring const & name = cmd.argument();
 987                 string data;
 988                 if (name == "ref") {
 989                         InsetMathRef tmp(name);
 990                         data = tmp.createDialogStr(to_utf8(name));
 991                 }
 992                 cur.bv().showInsetDialog(to_utf8(name), data, 0);
 993                 break;
 994         }
 995
 996         case LFUN_INSET_INSERT: {
 997                 MathData ar;
 998                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
 999                         cur.recordUndo();
1000                         cur.insert(ar);
1001                 } else
1002                         cur.undispatched();
1003                 break;
1004         }
1005         case LFUN_INSET_DISSOLVE:
1006                 if (!asHullInset()) {
1007                         cur.recordUndoInset();
1008                         cur.pullArg();
1009                 }
1010                 break;
1011
1012         default:
1013                 InsetMath::doDispatch(cur, cmd);
1014                 break;
1015         }
1016 }
1017
1018
1019 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1020                 FuncStatus & flag) const
1021 {
1022         // the font related toggles
1023         //string tc = "mathnormal";
1024         bool ret = true;
1025         string const arg = to_utf8(cmd.argument());
1026         switch (cmd.action) {
1027         case LFUN_TABULAR_FEATURE:
1028                 flag.enabled(false);
1029                 break;
1030 #if 0
1031         case LFUN_TABULAR_FEATURE:
1032                 // FIXME: check temporarily disabled
1033                 // valign code
1034                 char align = mathcursor::valign();
1035                 if (align == '\0') {
1036                         enable = false;
1037                         break;
1038                 }
1039                 if (cmd.argument().empty()) {
1040                         flag.clear();
1041                         break;
1042                 }
1043                 if (!contains("tcb", cmd.argument()[0])) {
1044                         enable = false;
1045                         break;
1046                 }
1047                 flag.setOnOff(cmd.argument()[0] == align);
1048                 break;
1049 #endif
1050         /// We have to handle them since 1.4 blocks all unhandled actions
1051         case LFUN_FONT_ITAL:
1052         case LFUN_FONT_BOLD:
1053         case LFUN_FONT_SANS:
1054         case LFUN_FONT_EMPH:
1055         case LFUN_FONT_TYPEWRITER:
1056         case LFUN_FONT_NOUN:
1057         case LFUN_FONT_ROMAN:
1058         case LFUN_FONT_DEFAULT:
1059                 flag.enabled(true);
1060                 break;
1061         case LFUN_MATH_MUTATE:
1062                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1063                 flag.setOnOff(false);
1064                 break;
1065
1066         // we just need to be in math mode to enable that
1067         case LFUN_MATH_SIZE:
1068         case LFUN_MATH_SPACE:
1069         case LFUN_MATH_LIMITS:
1070         case LFUN_MATH_NONUMBER:
1071         case LFUN_MATH_NUMBER:
1072         case LFUN_MATH_EXTERN:
1073                 flag.enabled(true);
1074                 break;
1075
1076         case LFUN_FONT_FRAK:
1077                 flag.enabled(currentMode() != TEXT_MODE);
1078                 break;
1079
1080         case LFUN_MATH_INSERT: {
1081                 bool const textarg =
1082                         arg == "\\textbf"   || arg == "\\textsf" ||
1083                         arg == "\\textrm"   || arg == "\\textmd" ||
1084                         arg == "\\textit"   || arg == "\\textsc" ||
1085                         arg == "\\textsl"   || arg == "\\textup" ||
1086                         arg == "\\texttt"   || arg == "\\textbb" ||
1087                         arg == "\\textnormal";
1088                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1089                 break;
1090         }
1091
1092         case LFUN_MATH_MATRIX:
1093                 flag.enabled(currentMode() == MATH_MODE);
1094                 break;
1095
1096         case LFUN_INSET_INSERT: {
1097                 // Don't test createMathInset_fromDialogStr(), since
1098                 // getStatus is not called with a valid reference and the
1099                 // dialog would not be applyable.
1100                 string const name = cmd.getArg(0);
1101                 flag.enabled(name == "ref");
1102                 break;
1103         }
1104
1105         case LFUN_MATH_DELIM:
1106         case LFUN_MATH_BIGDELIM:
1107                 // Don't do this with multi-cell selections
1108                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1109                 break;
1110
1111         case LFUN_HYPHENATION_POINT_INSERT:
1112         case LFUN_LIGATURE_BREAK_INSERT:
1113         case LFUN_MENU_SEPARATOR_INSERT:
1114         case LFUN_DOTS_INSERT:
1115         case LFUN_END_OF_SENTENCE_PERIOD_INSERT:
1116                 // FIXME: These would probably make sense in math-text mode
1117                 flag.enabled(false);
1118                 break;
1119
1120         case LFUN_INSET_DISSOLVE:
1121                 flag.enabled(!asHullInset());
1122                 break;
1123
1124         default:
1125                 ret = false;
1126                 break;
1127         }
1128         return ret;
1129 }
1130
1131
1132 void InsetMathNest::edit(Cursor & cur, bool left)
1133 {
1134         cur.push(*this);
1135         cur.idx() = left ? 0 : cur.lastidx();
1136         cur.pos() = left ? 0 : cur.lastpos();
1137         cur.resetAnchor();
1138         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1139 }
1140
1141
1142 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1143 {
1144         int idx_min = 0;
1145         int dist_min = 1000000;
1146         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1147                 int const d = cell(i).dist(cur.bv(), x, y);
1148                 if (d < dist_min) {
1149                         dist_min = d;
1150                         idx_min = i;
1151                 }
1152         }
1153         MathData & ar = cell(idx_min);
1154         cur.push(*this);
1155         cur.idx() = idx_min;
1156         cur.pos() = ar.x2pos(x - ar.xo(cur.bv()));
1157
1158         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1159         if (dist_min == 0) {
1160                 // hit inside cell
1161                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1162                         if (ar[i]->covers(cur.bv(), x, y))
1163                                 return ar[i].nucleus()->editXY(cur, x, y);
1164         }
1165         return this;
1166 }
1167
1168
1169 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1170 {
1171         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1172         BufferView & bv = cur.bv();
1173         bool do_selection = cmd.button() == mouse_button::button1
1174                 && cmd.argument() == "region-select";
1175         bv.mouseSetCursor(cur, do_selection);
1176         if (cmd.button() == mouse_button::button1) {
1177                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1178                 // Update the cursor update flags as needed:
1179                 //
1180                 // Update::Decoration: tells to update the decoration
1181                 //                     (visual box corners that define
1182                 //                     the inset)/
1183                 // Update::FitCursor: adjust the screen to the cursor
1184                 //                    position if needed
1185                 // cur.result().update(): don't overwrite previously set flags.
1186                 cur.updateFlags(Update::Decoration | Update::FitCursor
1187                                 | cur.result().update());
1188         } else if (cmd.button() == mouse_button::button2) {
1189                 if (cap::selection()) {
1190                         // See comment in Text::dispatch why we do this
1191                         cap::copySelectionToStack();
1192                         cmd = FuncRequest(LFUN_PASTE, "0");
1193                         doDispatch(bv.cursor(), cmd);
1194                 } else {
1195                         MathData ar;
1196                         asArray(theSelection().get(), ar);
1197                         bv.cursor().insert(ar);
1198                 }
1199         }
1200 }
1201
1202
1203 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1204 {
1205         // only select with button 1
1206         if (cmd.button() == mouse_button::button1) {
1207                 Cursor & bvcur = cur.bv().cursor();
1208                 if (bvcur.anchor_.hasPart(cur)) {
1209                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1210                         bvcur.setCursor(cur);
1211                         bvcur.selection() = true;
1212                         //lyxerr << "MOTION " << bvcur << endl;
1213                 } else
1214                         cur.undispatched();
1215         }
1216 }
1217
1218
1219 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1220 {
1221         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1222
1223         if (cmd.button() == mouse_button::button1) {
1224                 if (!cur.selection())
1225                         cur.noUpdate();
1226                 else {
1227                         Cursor & bvcur = cur.bv().cursor();
1228                         bvcur.selection() = true;
1229                 }
1230                 return;
1231         }
1232
1233         cur.undispatched();
1234 }
1235
1236
1237 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1238 {
1239         //lyxerr << "interpret 2: '" << c << "'" << endl;
1240         docstring save_selection;
1241         if (c == '^' || c == '_')
1242                 save_selection = grabAndEraseSelection(cur);
1243
1244         cur.clearTargetX();
1245
1246         // handle macroMode
1247         if (cur.inMacroMode()) {
1248                 docstring name = cur.macroName();
1249
1250                 /// are we currently typing '#1' or '#2' or...?
1251                 if (name == "\\#") {
1252                         cur.backspace();
1253                         int n = c - '0';
1254                         if (n >= 1 && n <= 9)
1255                                 cur.insert(new MathMacroArgument(n));
1256                         return true;
1257                 }
1258
1259                 if (isAlphaASCII(c)) {
1260                         cur.activeMacro()->setName(name + docstring(1, c));
1261                         return true;
1262                 }
1263
1264                 // handle 'special char' macros
1265                 if (name == "\\") {
1266                         // remove the '\\'
1267                         if (c == '\\') {
1268                                 cur.backspace();
1269                                 if (currentMode() == InsetMath::TEXT_MODE)
1270                                         cur.niceInsert(createInsetMath("textbackslash"));
1271                                 else
1272                                         cur.niceInsert(createInsetMath("backslash"));
1273                         } else if (c == '{') {
1274                                 cur.backspace();
1275                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1276                         } else if (c == '%') {
1277                                 cur.backspace();
1278                                 cur.niceInsert(MathAtom(new InsetMathComment));
1279                         } else if (c == '#') {
1280                                 BOOST_ASSERT(cur.activeMacro());
1281                                 cur.activeMacro()->setName(name + docstring(1, c));
1282                         } else {
1283                                 cur.backspace();
1284                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1285                         }
1286                         return true;
1287                 }
1288
1289                 // One character big delimiters. The others are handled in
1290                 // interpretString().
1291                 latexkeys const * l = in_word_set(name.substr(1));
1292                 if (name[0] == '\\' && l && l->inset == "big") {
1293                         docstring delim;
1294                         switch (c) {
1295                         case '{':
1296                                 delim = from_ascii("\\{");
1297                                 break;
1298                         case '}':
1299                                 delim = from_ascii("\\}");
1300                                 break;
1301                         default:
1302                                 delim = docstring(1, c);
1303                                 break;
1304                         }
1305                         if (InsetMathBig::isBigInsetDelim(delim)) {
1306                                 // name + delim ared a valid InsetMathBig.
1307                                 // We can't use cur.macroModeClose() because
1308                                 // it does not handle delim.
1309                                 InsetMathUnknown * p = cur.activeMacro();
1310                                 p->finalize();
1311                                 --cur.pos();
1312                                 cur.cell().erase(cur.pos());
1313                                 cur.plainInsert(MathAtom(
1314                                         new InsetMathBig(name.substr(1), delim)));
1315                                 return true;
1316                         }
1317                 }
1318
1319                 // leave macro mode and try again if necessary
1320                 cur.macroModeClose();
1321                 if (c == '{')
1322                         cur.niceInsert(MathAtom(new InsetMathBrace));
1323                 else if (c != ' ')
1324                         interpretChar(cur, c);
1325                 return true;
1326         }
1327
1328         // This is annoying as one has to press <space> far too often.
1329         // Disable it.
1330
1331 #if 0
1332                 // leave autocorrect mode if necessary
1333                 if (autocorrect() && c == ' ') {
1334                         autocorrect() = false;
1335                         return true;
1336                 }
1337 #endif
1338
1339         // just clear selection on pressing the space bar
1340         if (cur.selection() && c == ' ') {
1341                 cur.selection() = false;
1342                 return true;
1343         }
1344
1345         selClearOrDel(cur);
1346
1347         if (c == '\\') {
1348                 //lyxerr << "starting with macro" << endl;
1349                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), false)));
1350                 return true;
1351         }
1352
1353         if (c == '\n') {
1354                 if (currentMode() == InsetMath::TEXT_MODE)
1355                         cur.insert(c);
1356                 return true;
1357         }
1358
1359         if (c == ' ') {
1360                 if (currentMode() == InsetMath::TEXT_MODE) {
1361                         // insert spaces in text mode,
1362                         // but suppress direct insertion of two spaces in a row
1363                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1364                         // it is better than nothing...
1365                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1366                                 cur.insert(c);
1367                                 // FIXME: we have to enable full redraw here because of the
1368                                 // visual box corners that define the inset. If we know for
1369                                 // sure that we stay within the same cell we can optimize for
1370                                 // that using:
1371                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1372                         }
1373                         return true;
1374                 }
1375                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1376                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1377                         // FIXME: we have to enable full redraw here because of the
1378                         // visual box corners that define the inset. If we know for
1379                         // sure that we stay within the same cell we can optimize for
1380                         // that using:
1381                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1382                         return true;
1383                 }
1384
1385                 if (cur.popRight()) {
1386                         // FIXME: we have to enable full redraw here because of the
1387                         // visual box corners that define the inset. If we know for
1388                         // sure that we stay within the same cell we can optimize for
1389                         // that using:
1390                         //cur.updateFlags(Update::FitCursor);
1391                         return true;
1392                 }
1393
1394                 // if we are at the very end, leave the formula
1395                 return cur.pos() != cur.lastpos();
1396         }
1397
1398         // These shouldn't work in text mode:
1399         if (currentMode() != InsetMath::TEXT_MODE) {
1400                 if (c == '_') {
1401                         script(cur, false, save_selection);
1402                         return true;
1403                 }
1404                 if (c == '^') {
1405                         script(cur, true, save_selection);
1406                         return true;
1407                 }
1408                 if (c == '~') {
1409                         cur.niceInsert(createInsetMath("sim"));
1410                         return true;
1411                 }
1412         }
1413
1414         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1415             c == '%' || c == '_' || c == '^') {
1416                 cur.niceInsert(createInsetMath(docstring(1, c)));
1417                 return true;
1418         }
1419
1420
1421         // try auto-correction
1422         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1423         //      return true;
1424
1425         // no special circumstances, so insert the character without any fuss
1426         cur.insert(c);
1427         cur.autocorrect() = true;
1428         return true;
1429 }
1430
1431
1432 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1433 {
1434         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1435         // possible
1436         if (!cur.empty() && cur.pos() > 0 &&
1437             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1438                 if (InsetMathBig::isBigInsetDelim(str)) {
1439                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1440                         if (prev[0] == '\\') {
1441                                 prev = prev.substr(1);
1442                                 latexkeys const * l = in_word_set(prev);
1443                                 if (l && l->inset == "big") {
1444                                         cur.cell()[cur.pos() - 1] =
1445                                                 MathAtom(new InsetMathBig(prev, str));
1446                                         return true;
1447                                 }
1448                         }
1449                 }
1450         }
1451         return false;
1452 }
1453
1454
1455 bool InsetMathNest::script(Cursor & cur, bool up,
1456                 docstring const & save_selection)
1457 {
1458         // Hack to get \^ and \_ working
1459         //lyxerr << "handling script: up: " << up << endl;
1460         if (cur.inMacroMode() && cur.macroName() == "\\") {
1461                 if (up)
1462                         cur.niceInsert(createInsetMath("mathcircumflex"));
1463                 else
1464                         interpretChar(cur, '_');
1465                 return true;
1466         }
1467
1468         cur.macroModeClose();
1469         if (asScriptInset() && cur.idx() == 0) {
1470                 // we are in a nucleus of a script inset, move to _our_ script
1471                 InsetMathScript * inset = asScriptInset();
1472                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1473                 inset->ensure(up);
1474                 cur.idx() = inset->idxOfScript(up);
1475                 cur.pos() = 0;
1476         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1477                 --cur.pos();
1478                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1479                 cur.push(*inset);
1480                 inset->ensure(up);
1481                 cur.idx() = inset->idxOfScript(up);
1482                 cur.pos() = cur.lastpos();
1483         } else {
1484                 // convert the thing to our left to a scriptinset or create a new
1485                 // one if in the very first position of the array
1486                 if (cur.pos() == 0) {
1487                         //lyxerr << "new scriptinset" << endl;
1488                         cur.insert(new InsetMathScript(up));
1489                 } else {
1490                         //lyxerr << "converting prev atom " << endl;
1491                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1492                 }
1493                 --cur.pos();
1494                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1495                 // See comment in MathParser.cpp for special handling of {}-bases
1496
1497                 cur.push(*inset);
1498                 cur.idx() = 1;
1499                 cur.pos() = 0;
1500         }
1501         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1502         cur.niceInsert(save_selection);
1503         cur.resetAnchor();
1504         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1505         return true;
1506 }
1507
1508
1509 } // namespace lyx