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 "CoordCache.h"
  39 #include "Cursor.h"
  40 #include "CutAndPaste.h"
  41 #include "debug.h"
  42 #include "DispatchResult.h"
  43 #include "FuncRequest.h"
  44 #include "FuncStatus.h"
  45 #include "LyXFunc.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_BACKWARD:
 494                 cur.bv().cursor() = cur;
 495                 break;
 496
 497         case LFUN_FINISHED_FORWARD:
 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 (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
 510                         cur.pushLeft(*cur.nextAtom().nucleus());
 511                         cur.inset().idxFirst(cur);
 512                 } else if (cur.posRight() || idxRight(cur)
 513                         || cur.popRight() || cur.selection())
 514                         ;
 515                 else {
 516                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 517                         cur.undispatched();
 518                 }
 519                 break;
 520
 521         case LFUN_CHAR_BACKWARD:
 522                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 523         case LFUN_CHAR_BACKWARD_SELECT:
 524                 cur.selHandle(cmd.action == LFUN_CHAR_BACKWARD_SELECT);
 525                 cur.autocorrect() = false;
 526                 cur.clearTargetX();
 527                 cur.macroModeClose();
 528                 if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
 529                         cur.posLeft();
 530                         cur.push(*cur.nextAtom().nucleus());
 531                         cur.inset().idxLast(cur);
 532                 } else if (cur.posLeft() || idxLeft(cur)
 533                         || cur.popLeft() || cur.selection())
 534                         ;
 535                 else {
 536                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 537                         cur.undispatched();
 538                 }
 539                 break;
 540
 541         case LFUN_CHAR_RIGHT:
 542         case LFUN_CHAR_RIGHT_SELECT:
 543                 //FIXME: for visual cursor, really move right
 544                 if (reverseDirectionNeeded(cur))
 545                         lyx::dispatch(FuncRequest(
 546                                 cmd.action == LFUN_CHAR_RIGHT_SELECT ?
 547                                         LFUN_CHAR_BACKWARD_SELECT : LFUN_CHAR_BACKWARD));
 548                 else
 549                         lyx::dispatch(FuncRequest(
 550                                 cmd.action == LFUN_CHAR_RIGHT_SELECT ?
 551                                         LFUN_CHAR_FORWARD_SELECT : LFUN_CHAR_FORWARD));
 552                 break;
 553
 554         case LFUN_CHAR_LEFT:
 555         case LFUN_CHAR_LEFT_SELECT:
 556                 //FIXME: for visual cursor, really move left
 557                 if (reverseDirectionNeeded(cur))
 558                         lyx::dispatch(FuncRequest(
 559                                 cmd.action == LFUN_CHAR_LEFT_SELECT ?
 560                                         LFUN_CHAR_FORWARD_SELECT : LFUN_CHAR_FORWARD));
 561                 else
 562                         lyx::dispatch(FuncRequest(
 563                                 cmd.action == LFUN_CHAR_LEFT_SELECT ?
 564                                         LFUN_CHAR_BACKWARD_SELECT : LFUN_CHAR_BACKWARD));
 565                 break;
 566
 567         case LFUN_DOWN:
 568         case LFUN_UP:
 569                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 570         case LFUN_DOWN_SELECT:
 571         case LFUN_UP_SELECT: {
 572                 // close active macro
 573                 if (cur.inMacroMode()) {
 574                         cur.macroModeClose();
 575                         break;
 576                 }
 577
 578                 // stop/start the selection
 579                 bool select = cmd.action == LFUN_DOWN_SELECT ||
 580                         cmd.action == LFUN_UP_SELECT;
 581                 cur.selHandle(select);
 582
 583                 // go up/down
 584                 bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
 585                 bool successful = cur.upDownInMath(up);
 586                 if (successful) {
 587                         // notify left insets and give them chance to set update flags
 588                         lyx::notifyCursorLeaves(cur.beforeDispatchCursor(), cur);
 589                         cur.fixIfBroken();
 590                         break;
 591                 }
 592
 593                 if (cur.fixIfBroken())
 594                         // FIXME: Something bad happened. We pass the corrected Cursor
 595                         // instead of letting things go worse.
 596                         break;
 597
 598                 // We did not manage to move the cursor.
 599                 cur.undispatched();
 600                 break;
 601         }
 602
 603         case LFUN_MOUSE_DOUBLE:
 604         case LFUN_MOUSE_TRIPLE:
 605         case LFUN_WORD_SELECT:
 606                 cur.pos() = 0;
 607                 cur.idx() = 0;
 608                 cur.resetAnchor();
 609                 cur.selection() = true;
 610                 cur.pos() = cur.lastpos();
 611                 cur.idx() = cur.lastidx();
 612                 break;
 613
 614         case LFUN_PARAGRAPH_UP:
 615         case LFUN_PARAGRAPH_DOWN:
 616                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 617         case LFUN_PARAGRAPH_UP_SELECT:
 618         case LFUN_PARAGRAPH_DOWN_SELECT:
 619                 break;
 620
 621         case LFUN_LINE_BEGIN:
 622         case LFUN_WORD_BACKWARD:
 623                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 624         case LFUN_LINE_BEGIN_SELECT:
 625         case LFUN_WORD_BACKWARD_SELECT:
 626                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 627                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 628                 cur.macroModeClose();
 629                 if (cur.pos() != 0) {
 630                         cur.pos() = 0;
 631                 } else if (cur.col() != 0) {
 632                         cur.idx() -= cur.col();
 633                         cur.pos() = 0;
 634                 } else if (cur.idx() != 0) {
 635                         cur.idx() = 0;
 636                         cur.pos() = 0;
 637                 } else {
 638                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 639                         cur.undispatched();
 640                 }
 641                 break;
 642
 643         case LFUN_WORD_FORWARD:
 644         case LFUN_LINE_END:
 645                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 646         case LFUN_WORD_FORWARD_SELECT:
 647         case LFUN_LINE_END_SELECT:
 648                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 649                                 cmd.action == LFUN_LINE_END_SELECT);
 650                 cur.macroModeClose();
 651                 cur.clearTargetX();
 652                 if (cur.pos() != cur.lastpos()) {
 653                         cur.pos() = cur.lastpos();
 654                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 655                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 656                         cur.pos() = cur.lastpos();
 657                 } else if (cur.idx() != cur.lastidx()) {
 658                         cur.idx() = cur.lastidx();
 659                         cur.pos() = cur.lastpos();
 660                 } else {
 661                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 662                         cur.undispatched();
 663                 }
 664                 break;
 665
 666         case LFUN_SCREEN_UP_SELECT:
 667                 cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 668                 cur.undispatched();
 669                 break;
 670
 671         case LFUN_SCREEN_DOWN_SELECT:
 672                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 673                 cur.undispatched();
 674                 break;
 675
 676         case LFUN_CELL_FORWARD:
 677                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 678                 cur.inset().idxNext(cur);
 679                 break;
 680
 681         case LFUN_CELL_BACKWARD:
 682                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 683                 cur.inset().idxPrev(cur);
 684                 break;
 685
 686         case LFUN_WORD_DELETE_BACKWARD:
 687         case LFUN_CHAR_DELETE_BACKWARD:
 688                 if (cur.pos() == 0)
 689                         // May affect external cell:
 690                         cur.recordUndoInset();
 691                 else
 692                         cur.recordUndo();
 693                 // if the inset can not be removed from within, delete it
 694                 if (!cur.backspace()) {
 695                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 696                         cur.innerText()->dispatch(cur, cmd);
 697                 }
 698                 break;
 699
 700         case LFUN_WORD_DELETE_FORWARD:
 701         case LFUN_CHAR_DELETE_FORWARD:
 702                 if (cur.pos() == cur.lastpos())
 703                         // May affect external cell:
 704                         cur.recordUndoInset();
 705                 else
 706                         cur.recordUndo();
 707                 // if the inset can not be removed from within, delete it
 708                 if (!cur.erase()) {
 709                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 710                         cur.innerText()->dispatch(cur, cmd);
 711                 }
 712                 break;
 713
 714         case LFUN_ESCAPE:
 715                 if (cur.selection())
 716                         cur.clearSelection();
 717                 else  {
 718                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 719                         cur.undispatched();
 720                 }
 721                 break;
 722
 723         case LFUN_INSET_TOGGLE:
 724                 cur.recordUndo();
 725                 lock(!lock());
 726                 cur.popRight();
 727                 break;
 728
 729         case LFUN_SELF_INSERT:
 730                 if (cmd.argument().size() != 1) {
 731                         cur.recordUndo();
 732                         docstring const arg = cmd.argument();
 733                         if (!interpretString(cur, arg))
 734                                 cur.insert(arg);
 735                         break;
 736                 }
 737                 // Don't record undo steps if we are in macro mode and
 738                 // cmd.argument is the next character of the macro name.
 739                 // Otherwise we'll get an invalid cursor if we undo after
 740                 // the macro was finished and the macro is a known command,
 741                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 742                 // the InsetMathUnknown with name "frac" by an empty
 743                 // InsetMathFrac -> a pos value > 0 is invalid.
 744                 // A side effect is that an undo before the macro is finished
 745                 // undoes the complete macro, not only the last character.
 746                 if (!cur.inMacroMode())
 747                         cur.recordUndo();
 748
 749                 // spacial handling of space. If we insert an inset
 750                 // via macro mode, we want to put the cursor inside it
 751                 // if relevant. Think typing "\frac<space>".
 752                 if (cmd.argument()[0] == ' '
 753                     && cur.inMacroMode() && cur.macroName() != "\\"
 754                     && cur.macroModeClose()) {
 755                         MathAtom const atom = cur.prevAtom();
 756                         if (atom->asNestInset() && atom->isActive()) {
 757                                 cur.posLeft();
 758                                 cur.pushLeft(*cur.nextInset());
 759                         }
 760                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 761                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 762                         cur.undispatched();
 763                 }
 764                 break;
 765
 766         //case LFUN_SERVER_GET_XY:
 767         //      sprintf(dispatch_buffer, "%d %d",);
 768         //      break;
 769
 770         case LFUN_SERVER_SET_XY: {
 771                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 772                 int x = 0;
 773                 int y = 0;
 774                 istringstream is(to_utf8(cmd.argument()));
 775                 is >> x >> y;
 776                 cur.setScreenPos(x, y);
 777                 break;
 778         }
 779
 780         // Special casing for superscript in case of LyX handling
 781         // dead-keys:
 782         case LFUN_ACCENT_CIRCUMFLEX:
 783                 if (cmd.argument().empty()) {
 784                         // do superscript if LyX handles
 785                         // deadkeys
 786                         cur.recordUndo();
 787                         script(cur, true, grabAndEraseSelection(cur));
 788                 }
 789                 break;
 790
 791         case LFUN_ACCENT_UMLAUT:
 792         case LFUN_ACCENT_ACUTE:
 793         case LFUN_ACCENT_GRAVE:
 794         case LFUN_ACCENT_BREVE:
 795         case LFUN_ACCENT_DOT:
 796         case LFUN_ACCENT_MACRON:
 797         case LFUN_ACCENT_CARON:
 798         case LFUN_ACCENT_TILDE:
 799         case LFUN_ACCENT_CEDILLA:
 800         case LFUN_ACCENT_CIRCLE:
 801         case LFUN_ACCENT_UNDERDOT:
 802         case LFUN_ACCENT_TIE:
 803         case LFUN_ACCENT_OGONEK:
 804         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 805                 break;
 806
 807         //  Math fonts
 808         case LFUN_FONT_FREE_APPLY:
 809         case LFUN_FONT_FREE_UPDATE:
 810                 handleFont2(cur, cmd.argument());
 811                 break;
 812
 813         case LFUN_FONT_BOLD:
 814                 if (currentMode() == TEXT_MODE)
 815                         handleFont(cur, cmd.argument(), "textbf");
 816                 else
 817                         handleFont(cur, cmd.argument(), "mathbf");
 818                 break;
 819         case LFUN_FONT_SANS:
 820                 if (currentMode() == TEXT_MODE)
 821                         handleFont(cur, cmd.argument(), "textsf");
 822                 else
 823                         handleFont(cur, cmd.argument(), "mathsf");
 824                 break;
 825         case LFUN_FONT_EMPH:
 826                 if (currentMode() == TEXT_MODE)
 827                         handleFont(cur, cmd.argument(), "emph");
 828                 else
 829                         handleFont(cur, cmd.argument(), "mathcal");
 830                 break;
 831         case LFUN_FONT_ROMAN:
 832                 if (currentMode() == TEXT_MODE)
 833                         handleFont(cur, cmd.argument(), "textrm");
 834                 else
 835                         handleFont(cur, cmd.argument(), "mathrm");
 836                 break;
 837         case LFUN_FONT_TYPEWRITER:
 838                 if (currentMode() == TEXT_MODE)
 839                         handleFont(cur, cmd.argument(), "texttt");
 840                 else
 841                         handleFont(cur, cmd.argument(), "mathtt");
 842                 break;
 843         case LFUN_FONT_FRAK:
 844                 handleFont(cur, cmd.argument(), "mathfrak");
 845                 break;
 846         case LFUN_FONT_ITAL:
 847                 if (currentMode() == TEXT_MODE)
 848                         handleFont(cur, cmd.argument(), "textit");
 849                 else
 850                         handleFont(cur, cmd.argument(), "mathit");
 851                 break;
 852         case LFUN_FONT_NOUN:
 853                 if (currentMode() == TEXT_MODE)
 854                         // FIXME: should be "noun"
 855                         handleFont(cur, cmd.argument(), "textsc");
 856                 else
 857                         handleFont(cur, cmd.argument(), "mathbb");
 858                 break;
 859         /*
 860         case LFUN_FONT_FREE_APPLY:
 861                 handleFont(cur, cmd.argument(), "textrm");
 862                 break;
 863         */
 864         case LFUN_FONT_DEFAULT:
 865                 handleFont(cur, cmd.argument(), "textnormal");
 866                 break;
 867
 868         case LFUN_MATH_MODE: {
 869 #if 1
 870                 // ignore math-mode on when already in math mode
 871                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 872                         break;
 873                 cur.macroModeClose();
 874                 docstring const save_selection = grabAndEraseSelection(cur);
 875                 selClearOrDel(cur);
 876                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 877                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 878                 cur.posLeft();
 879                 cur.pushLeft(*cur.nextInset());
 880                 cur.niceInsert(save_selection);
 881 #else
 882                 if (currentMode() == Inset::TEXT_MODE) {
 883                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 884                         cur.message(_("create new math text environment ($...$)"));
 885                 } else {
 886                         handleFont(cur, cmd.argument(), "textrm");
 887                         cur.message(_("entered math text mode (textrm)"));
 888                 }
 889 #endif
 890                 break;
 891         }
 892
 893         case LFUN_MATH_SIZE:
 894 #if 0
 895                 cur.recordUndo();
 896                 cur.setSize(arg);
 897 #endif
 898                 break;
 899
 900         case LFUN_MATH_MATRIX: {
 901                 cur.recordUndo();
 902                 unsigned int m = 1;
 903                 unsigned int n = 1;
 904                 docstring v_align;
 905                 docstring h_align;
 906                 idocstringstream is(cmd.argument());
 907                 is >> m >> n >> v_align >> h_align;
 908                 if (m < 1)
 909                         m = 1;
 910                 if (n < 1)
 911                         n = 1;
 912                 v_align += 'c';
 913                 cur.niceInsert(
 914                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 915                 break;
 916         }
 917
 918         case LFUN_MATH_DELIM: {
 919                 docstring ls;
 920                 docstring rs = support::split(cmd.argument(), ls, ' ');
 921                 // Reasonable default values
 922                 if (ls.empty())
 923                         ls = '(';
 924                 if (rs.empty())
 925                         rs = ')';
 926                 cur.recordUndo();
 927                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 928                 break;
 929         }
 930
 931         case LFUN_MATH_BIGDELIM: {
 932                 docstring const lname  = from_utf8(cmd.getArg(0));
 933                 docstring const ldelim = from_utf8(cmd.getArg(1));
 934                 docstring const rname  = from_utf8(cmd.getArg(2));
 935                 docstring const rdelim = from_utf8(cmd.getArg(3));
 936                 latexkeys const * l = in_word_set(lname);
 937                 bool const have_l = l && l->inset == "big" &&
 938                                     InsetMathBig::isBigInsetDelim(ldelim);
 939                 l = in_word_set(rname);
 940                 bool const have_r = l && l->inset == "big" &&
 941                                     InsetMathBig::isBigInsetDelim(rdelim);
 942                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 943                 // or right delimiter.
 944                 if (have_l || have_r) {
 945                         cur.recordUndo();
 946                         docstring const selection = grabAndEraseSelection(cur);
 947                         selClearOrDel(cur);
 948                         if (have_l)
 949                                 cur.insert(MathAtom(new InsetMathBig(lname,
 950                                                                 ldelim)));
 951                         cur.niceInsert(selection);
 952                         if (have_r)
 953                                 cur.insert(MathAtom(new InsetMathBig(rname,
 954                                                                 rdelim)));
 955                 }
 956                 // Don't call cur.undispatched() if we did nothing, this would
 957                 // lead to infinite recursion via Text::dispatch().
 958                 break;
 959         }
 960
 961         case LFUN_SPACE_INSERT:
 962         case LFUN_MATH_SPACE:
 963                 cur.recordUndo();
 964                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 965                 break;
 966
 967         case LFUN_ERT_INSERT:
 968                 // interpret this as if a backslash was typed
 969                 cur.recordUndo();
 970                 interpretChar(cur, '\\');
 971                 break;
 972
 973         case LFUN_MATH_SUBSCRIPT:
 974                 // interpret this as if a _ was typed
 975                 cur.recordUndo();
 976                 interpretChar(cur, '_');
 977                 break;
 978
 979         case LFUN_MATH_SUPERSCRIPT:
 980                 // interpret this as if a ^ was typed
 981                 cur.recordUndo();
 982                 interpretChar(cur, '^');
 983                 break;
 984
 985         case LFUN_QUOTE_INSERT:
 986                 // interpret this as if a straight " was typed
 987                 cur.recordUndo();
 988                 interpretChar(cur, '\"');
 989                 break;
 990
 991 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
 992 // handling such that "self-insert" works on "arbitrary stuff" too, and
 993 // math-insert only handles special math things like "matrix".
 994         case LFUN_MATH_INSERT: {
 995                 cur.recordUndo();
 996                 if (cmd.argument() == "^" || cmd.argument() == "_") {
 997                         interpretChar(cur, cmd.argument()[0]);
 998                 } else
 999                         cur.niceInsert(cmd.argument());
1000                 break;
1001                 }
1002
1003         case LFUN_DIALOG_SHOW_NEW_INSET: {
1004                 docstring const & name = cmd.argument();
1005                 string data;
1006                 if (name == "ref") {
1007                         InsetMathRef tmp(name);
1008                         data = tmp.createDialogStr(to_utf8(name));
1009                 }
1010                 cur.bv().showInsetDialog(to_utf8(name), data, 0);
1011                 break;
1012         }
1013
1014         case LFUN_INSET_INSERT: {
1015                 MathData ar;
1016                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1017                         cur.recordUndo();
1018                         cur.insert(ar);
1019                 } else
1020                         cur.undispatched();
1021                 break;
1022         }
1023         case LFUN_INSET_DISSOLVE:
1024                 if (!asHullInset()) {
1025                         cur.recordUndoInset();
1026                         cur.pullArg();
1027                 }
1028                 break;
1029
1030         default:
1031                 InsetMath::doDispatch(cur, cmd);
1032                 break;
1033         }
1034 }
1035
1036
1037 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1038                 FuncStatus & flag) const
1039 {
1040         // the font related toggles
1041         //string tc = "mathnormal";
1042         bool ret = true;
1043         string const arg = to_utf8(cmd.argument());
1044         switch (cmd.action) {
1045         case LFUN_TABULAR_FEATURE:
1046                 flag.enabled(false);
1047                 break;
1048 #if 0
1049         case LFUN_TABULAR_FEATURE:
1050                 // FIXME: check temporarily disabled
1051                 // valign code
1052                 char align = mathcursor::valign();
1053                 if (align == '\0') {
1054                         enable = false;
1055                         break;
1056                 }
1057                 if (cmd.argument().empty()) {
1058                         flag.clear();
1059                         break;
1060                 }
1061                 if (!contains("tcb", cmd.argument()[0])) {
1062                         enable = false;
1063                         break;
1064                 }
1065                 flag.setOnOff(cmd.argument()[0] == align);
1066                 break;
1067 #endif
1068         /// We have to handle them since 1.4 blocks all unhandled actions
1069         case LFUN_FONT_ITAL:
1070         case LFUN_FONT_BOLD:
1071         case LFUN_FONT_SANS:
1072         case LFUN_FONT_EMPH:
1073         case LFUN_FONT_TYPEWRITER:
1074         case LFUN_FONT_NOUN:
1075         case LFUN_FONT_ROMAN:
1076         case LFUN_FONT_DEFAULT:
1077                 flag.enabled(true);
1078                 break;
1079         case LFUN_MATH_MUTATE:
1080                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1081                 flag.setOnOff(false);
1082                 break;
1083
1084         // we just need to be in math mode to enable that
1085         case LFUN_MATH_SIZE:
1086         case LFUN_MATH_SPACE:
1087         case LFUN_MATH_LIMITS:
1088         case LFUN_MATH_NONUMBER:
1089         case LFUN_MATH_NUMBER:
1090         case LFUN_MATH_EXTERN:
1091                 flag.enabled(true);
1092                 break;
1093
1094         case LFUN_FONT_FRAK:
1095                 flag.enabled(currentMode() != TEXT_MODE);
1096                 break;
1097
1098         case LFUN_MATH_INSERT: {
1099                 bool const textarg =
1100                         arg == "\\textbf"   || arg == "\\textsf" ||
1101                         arg == "\\textrm"   || arg == "\\textmd" ||
1102                         arg == "\\textit"   || arg == "\\textsc" ||
1103                         arg == "\\textsl"   || arg == "\\textup" ||
1104                         arg == "\\texttt"   || arg == "\\textbb" ||
1105                         arg == "\\textnormal";
1106                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1107                 break;
1108         }
1109
1110         case LFUN_MATH_MATRIX:
1111                 flag.enabled(currentMode() == MATH_MODE);
1112                 break;
1113
1114         case LFUN_INSET_INSERT: {
1115                 // Don't test createMathInset_fromDialogStr(), since
1116                 // getStatus is not called with a valid reference and the
1117                 // dialog would not be applyable.
1118                 string const name = cmd.getArg(0);
1119                 flag.enabled(name == "ref");
1120                 break;
1121         }
1122
1123         case LFUN_MATH_DELIM:
1124         case LFUN_MATH_BIGDELIM:
1125                 // Don't do this with multi-cell selections
1126                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1127                 break;
1128
1129         case LFUN_HYPHENATION_POINT_INSERT:
1130         case LFUN_LIGATURE_BREAK_INSERT:
1131         case LFUN_MENU_SEPARATOR_INSERT:
1132         case LFUN_DOTS_INSERT:
1133         case LFUN_END_OF_SENTENCE_PERIOD_INSERT:
1134                 // FIXME: These would probably make sense in math-text mode
1135                 flag.enabled(false);
1136                 break;
1137
1138         case LFUN_INSET_DISSOLVE:
1139                 flag.enabled(!asHullInset());
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         bool do_selection = cmd.button() == mouse_button::button1
1192                 && cmd.argument() == "region-select";
1193         bv.mouseSetCursor(cur, do_selection);
1194         if (cmd.button() == mouse_button::button1) {
1195                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1196                 // Update the cursor update flags as needed:
1197                 //
1198                 // Update::Decoration: tells to update the decoration
1199                 //                     (visual box corners that define
1200                 //                     the inset)/
1201                 // Update::FitCursor: adjust the screen to the cursor
1202                 //                    position if needed
1203                 // cur.result().update(): don't overwrite previously set flags.
1204                 cur.updateFlags(Update::Decoration | Update::FitCursor
1205                                 | cur.result().update());
1206         } else if (cmd.button() == mouse_button::button2) {
1207                 if (cap::selection()) {
1208                         // See comment in Text::dispatch why we do this
1209                         cap::copySelectionToStack();
1210                         cmd = FuncRequest(LFUN_PASTE, "0");
1211                         doDispatch(bv.cursor(), cmd);
1212                 } else {
1213                         MathData ar;
1214                         asArray(theSelection().get(), ar);
1215                         bv.cursor().insert(ar);
1216                 }
1217         }
1218 }
1219
1220
1221 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1222 {
1223         // only select with button 1
1224         if (cmd.button() == mouse_button::button1) {
1225                 Cursor & bvcur = cur.bv().cursor();
1226                 if (bvcur.anchor_.hasPart(cur)) {
1227                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1228                         bvcur.setCursor(cur);
1229                         bvcur.selection() = true;
1230                         //lyxerr << "MOTION " << bvcur << endl;
1231                 } else
1232                         cur.undispatched();
1233         }
1234 }
1235
1236
1237 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1238 {
1239         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1240
1241         if (cmd.button() == mouse_button::button1) {
1242                 if (!cur.selection())
1243                         cur.noUpdate();
1244                 else {
1245                         Cursor & bvcur = cur.bv().cursor();
1246                         bvcur.selection() = true;
1247                 }
1248                 return;
1249         }
1250
1251         cur.undispatched();
1252 }
1253
1254
1255 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1256 {
1257         //lyxerr << "interpret 2: '" << c << "'" << endl;
1258         docstring save_selection;
1259         if (c == '^' || c == '_')
1260                 save_selection = grabAndEraseSelection(cur);
1261
1262         cur.clearTargetX();
1263
1264         // handle macroMode
1265         if (cur.inMacroMode()) {
1266                 docstring name = cur.macroName();
1267
1268                 /// are we currently typing '#1' or '#2' or...?
1269                 if (name == "\\#") {
1270                         cur.backspace();
1271                         int n = c - '0';
1272                         if (n >= 1 && n <= 9)
1273                                 cur.insert(new MathMacroArgument(n));
1274                         return true;
1275                 }
1276
1277                 if (isAlphaASCII(c)) {
1278                         cur.activeMacro()->setName(name + docstring(1, c));
1279                         return true;
1280                 }
1281
1282                 // handle 'special char' macros
1283                 if (name == "\\") {
1284                         // remove the '\\'
1285                         if (c == '\\') {
1286                                 cur.backspace();
1287                                 if (currentMode() == InsetMath::TEXT_MODE)
1288                                         cur.niceInsert(createInsetMath("textbackslash"));
1289                                 else
1290                                         cur.niceInsert(createInsetMath("backslash"));
1291                         } else if (c == '{') {
1292                                 cur.backspace();
1293                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1294                         } else if (c == '%') {
1295                                 cur.backspace();
1296                                 cur.niceInsert(MathAtom(new InsetMathComment));
1297                         } else if (c == '#') {
1298                                 BOOST_ASSERT(cur.activeMacro());
1299                                 cur.activeMacro()->setName(name + docstring(1, c));
1300                         } else {
1301                                 cur.backspace();
1302                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1303                         }
1304                         return true;
1305                 }
1306
1307                 // One character big delimiters. The others are handled in
1308                 // interpretString().
1309                 latexkeys const * l = in_word_set(name.substr(1));
1310                 if (name[0] == '\\' && l && l->inset == "big") {
1311                         docstring delim;
1312                         switch (c) {
1313                         case '{':
1314                                 delim = from_ascii("\\{");
1315                                 break;
1316                         case '}':
1317                                 delim = from_ascii("\\}");
1318                                 break;
1319                         default:
1320                                 delim = docstring(1, c);
1321                                 break;
1322                         }
1323                         if (InsetMathBig::isBigInsetDelim(delim)) {
1324                                 // name + delim ared a valid InsetMathBig.
1325                                 // We can't use cur.macroModeClose() because
1326                                 // it does not handle delim.
1327                                 InsetMathUnknown * p = cur.activeMacro();
1328                                 p->finalize();
1329                                 --cur.pos();
1330                                 cur.cell().erase(cur.pos());
1331                                 cur.plainInsert(MathAtom(
1332                                         new InsetMathBig(name.substr(1), delim)));
1333                                 return true;
1334                         }
1335                 }
1336
1337                 // leave macro mode and try again if necessary
1338                 cur.macroModeClose();
1339                 if (c == '{')
1340                         cur.niceInsert(MathAtom(new InsetMathBrace));
1341                 else if (c != ' ')
1342                         interpretChar(cur, c);
1343                 return true;
1344         }
1345
1346         // This is annoying as one has to press <space> far too often.
1347         // Disable it.
1348
1349 #if 0
1350                 // leave autocorrect mode if necessary
1351                 if (autocorrect() && c == ' ') {
1352                         autocorrect() = false;
1353                         return true;
1354                 }
1355 #endif
1356
1357         // just clear selection on pressing the space bar
1358         if (cur.selection() && c == ' ') {
1359                 cur.selection() = false;
1360                 return true;
1361         }
1362
1363         selClearOrDel(cur);
1364
1365         if (c == '\\') {
1366                 //lyxerr << "starting with macro" << endl;
1367                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), false)));
1368                 return true;
1369         }
1370
1371         if (c == '\n') {
1372                 if (currentMode() == InsetMath::TEXT_MODE)
1373                         cur.insert(c);
1374                 return true;
1375         }
1376
1377         if (c == ' ') {
1378                 if (currentMode() == InsetMath::TEXT_MODE) {
1379                         // insert spaces in text mode,
1380                         // but suppress direct insertion of two spaces in a row
1381                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1382                         // it is better than nothing...
1383                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1384                                 cur.insert(c);
1385                                 // FIXME: we have to enable full redraw here because of the
1386                                 // visual box corners that define the inset. If we know for
1387                                 // sure that we stay within the same cell we can optimize for
1388                                 // that using:
1389                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1390                         }
1391                         return true;
1392                 }
1393                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1394                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1395                         // FIXME: we have to enable full redraw here because of the
1396                         // visual box corners that define the inset. If we know for
1397                         // sure that we stay within the same cell we can optimize for
1398                         // that using:
1399                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1400                         return true;
1401                 }
1402
1403                 if (cur.popRight()) {
1404                         // FIXME: we have to enable full redraw here because of the
1405                         // visual box corners that define the inset. If we know for
1406                         // sure that we stay within the same cell we can optimize for
1407                         // that using:
1408                         //cur.updateFlags(Update::FitCursor);
1409                         return true;
1410                 }
1411
1412                 // if we are at the very end, leave the formula
1413                 return cur.pos() != cur.lastpos();
1414         }
1415
1416         // These shouldn't work in text mode:
1417         if (currentMode() != InsetMath::TEXT_MODE) {
1418                 if (c == '_') {
1419                         script(cur, false, save_selection);
1420                         return true;
1421                 }
1422                 if (c == '^') {
1423                         script(cur, true, save_selection);
1424                         return true;
1425                 }
1426                 if (c == '~') {
1427                         cur.niceInsert(createInsetMath("sim"));
1428                         return true;
1429                 }
1430         }
1431
1432         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1433             c == '%' || c == '_' || c == '^') {
1434                 cur.niceInsert(createInsetMath(docstring(1, c)));
1435                 return true;
1436         }
1437
1438
1439         // try auto-correction
1440         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1441         //      return true;
1442
1443         // no special circumstances, so insert the character without any fuss
1444         cur.insert(c);
1445         cur.autocorrect() = true;
1446         return true;
1447 }
1448
1449
1450 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1451 {
1452         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1453         // possible
1454         if (!cur.empty() && cur.pos() > 0 &&
1455             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1456                 if (InsetMathBig::isBigInsetDelim(str)) {
1457                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1458                         if (prev[0] == '\\') {
1459                                 prev = prev.substr(1);
1460                                 latexkeys const * l = in_word_set(prev);
1461                                 if (l && l->inset == "big") {
1462                                         cur.cell()[cur.pos() - 1] =
1463                                                 MathAtom(new InsetMathBig(prev, str));
1464                                         return true;
1465                                 }
1466                         }
1467                 }
1468         }
1469         return false;
1470 }
1471
1472
1473 bool InsetMathNest::script(Cursor & cur, bool up,
1474                 docstring const & save_selection)
1475 {
1476         // Hack to get \^ and \_ working
1477         //lyxerr << "handling script: up: " << up << endl;
1478         if (cur.inMacroMode() && cur.macroName() == "\\") {
1479                 if (up)
1480                         cur.niceInsert(createInsetMath("mathcircumflex"));
1481                 else
1482                         interpretChar(cur, '_');
1483                 return true;
1484         }
1485
1486         cur.macroModeClose();
1487         if (asScriptInset() && cur.idx() == 0) {
1488                 // we are in a nucleus of a script inset, move to _our_ script
1489                 InsetMathScript * inset = asScriptInset();
1490                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1491                 inset->ensure(up);
1492                 cur.idx() = inset->idxOfScript(up);
1493                 cur.pos() = 0;
1494         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1495                 --cur.pos();
1496                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1497                 cur.push(*inset);
1498                 inset->ensure(up);
1499                 cur.idx() = inset->idxOfScript(up);
1500                 cur.pos() = cur.lastpos();
1501         } else {
1502                 // convert the thing to our left to a scriptinset or create a new
1503                 // one if in the very first position of the array
1504                 if (cur.pos() == 0) {
1505                         //lyxerr << "new scriptinset" << endl;
1506                         cur.insert(new InsetMathScript(up));
1507                 } else {
1508                         //lyxerr << "converting prev atom " << endl;
1509                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1510                 }
1511                 --cur.pos();
1512                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1513                 // See comment in MathParser.cpp for special handling of {}-bases
1514
1515                 cur.push(*inset);
1516                 cur.idx() = 1;
1517                 cur.pos() = 0;
1518         }
1519         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1520         cur.niceInsert(save_selection);
1521         cur.resetAnchor();
1522         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1523         return true;
1524 }
1525
1526
1527 } // namespace lyx