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 "InsetMathAMSArray.h"
  17 #include "InsetMathBig.h"
  18 #include "InsetMathBox.h"
  19 #include "InsetMathBrace.h"
  20 #include "InsetMathChar.h"
  21 #include "InsetMathColor.h"
  22 #include "InsetMathComment.h"
  23 #include "InsetMathDelim.h"
  24 #include "InsetMathEnsureMath.h"
  25 #include "InsetMathHull.h"
  26 #include "InsetMathRef.h"
  27 #include "InsetMathScript.h"
  28 #include "InsetMathSpace.h"
  29 #include "InsetMathSymbol.h"
  30 #include "InsetMathUnknown.h"
  31 #include "MathAutoCorrect.h"
  32 #include "MathCompletionList.h"
  33 #include "MathData.h"
  34 #include "MathFactory.h"
  35 #include "MathMacro.h"
  36 #include "MathMacroArgument.h"
  37 #include "MathParser.h"
  38 #include "MathStream.h"
  39 #include "MathSupport.h"
  40
  41 #include "Buffer.h"
  42 #include "BufferParams.h"
  43 #include "BufferView.h"
  44 #include "CoordCache.h"
  45 #include "Cursor.h"
  46 #include "CutAndPaste.h"
  47 #include "DispatchResult.h"
  48 #include "Encoding.h"
  49 #include "FuncRequest.h"
  50 #include "FuncStatus.h"
  51 #include "LyX.h"
  52 #include "LyXRC.h"
  53 #include "OutputParams.h"
  54 #include "Text.h"
  55
  56 #include "frontends/Application.h"
  57 #include "frontends/Clipboard.h"
  58 #include "frontends/Painter.h"
  59 #include "frontends/Selection.h"
  60
  61 #include "support/lassert.h"
  62 #include "support/debug.h"
  63 #include "support/gettext.h"
  64 #include "support/lstrings.h"
  65 #include "support/textutils.h"
  66 #include "support/docstream.h"
  67
  68 #include <algorithm>
  69 #include <sstream>
  70
  71 using namespace std;
  72 using namespace lyx::support;
  73
  74 namespace lyx {
  75
  76 using cap::copySelection;
  77 using cap::grabAndEraseSelection;
  78 using cap::cutSelection;
  79 using cap::replaceSelection;
  80 using cap::selClearOrDel;
  81
  82
  83 InsetMathNest::InsetMathNest(Buffer * buf, idx_type nargs)
  84         : InsetMath(buf), cells_(nargs), lock_(false)
  85 {
  86         setBuffer(*buf);
  87 }
  88
  89
  90 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  91         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_)
  92 {}
  93
  94
  95 InsetMathNest::~InsetMathNest()
  96 {
  97         map<BufferView const *, bool>::iterator it = mouse_hover_.begin();
  98         map<BufferView const *, bool>::iterator end = mouse_hover_.end();
  99         for (; it != end; ++it)
 100                 if (it->second)
 101                         it->first->clearLastInset(this);
 102 }
 103
 104
 105 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
 106 {
 107         cells_ = inset.cells_;
 108         lock_ = inset.lock_;
 109         mouse_hover_.clear();
 110         InsetMath::operator=(inset);
 111         return *this;
 112 }
 113
 114
 115 void InsetMathNest::setBuffer(Buffer & buffer)
 116 {
 117         InsetMath::setBuffer(buffer);
 118         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 119                 MathData & data = cell(i);
 120                 for (size_t j = 0; j != data.size(); ++j)
 121                         data[j].nucleus()->setBuffer(buffer);
 122         }
 123 }
 124
 125
 126 InsetMath::idx_type InsetMathNest::nargs() const
 127 {
 128         return cells_.size();
 129 }
 130
 131
 132 void InsetMathNest::cursorPos(BufferView const & bv,
 133                 CursorSlice const & sl, bool /*boundary*/,
 134                 int & x, int & y) const
 135 {
 136 // FIXME: This is a hack. Ideally, the coord cache should not store
 137 // absolute positions, but relative ones. This would mean to call
 138 // setXY() not in MathData::draw(), but in the parent insets' draw()
 139 // with the correctly adjusted x,y values. But this means that we'd have
 140 // to touch all (math)inset's draw() methods. Right now, we'll store
 141 // absolute value, and make them here relative, only to make them
 142 // absolute again when actually drawing the cursor. What a mess.
 143         LASSERT(&sl.inset() == this, return);
 144         MathData const & ar = sl.cell();
 145         CoordCache const & coord_cache = bv.coordCache();
 146         if (!coord_cache.getArrays().has(&ar)) {
 147                 // this can (semi-)legally happen if we just created this cell
 148                 // and it never has been drawn before. So don't ASSERT.
 149                 //lyxerr << "no cached data for array " << &ar << endl;
 150                 x = 0;
 151                 y = 0;
 152                 return;
 153         }
 154         Point const pt = coord_cache.getArrays().xy(&ar);
 155         if (!coord_cache.getInsets().has(this)) {
 156                 // same as above
 157                 //lyxerr << "no cached data for inset " << this << endl;
 158                 x = 0;
 159                 y = 0;
 160                 return;
 161         }
 162         Point const pt2 = coord_cache.getInsets().xy(this);
 163         //lyxerr << "retrieving position cache for MathData "
 164         //      << pt.x_ << ' ' << pt.y_ << endl;
 165         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 166         y = pt.y_ - pt2.y_;
 167 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 168 //              << " asc: " << ascent() << "  des: " << descent()
 169 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 170         // move cursor visually into empty cells ("blue rectangles");
 171         if (ar.empty())
 172                 x += 2;
 173 }
 174
 175
 176 void InsetMathNest::metrics(MetricsInfo const & mi) const
 177 {
 178         MetricsInfo m = mi;
 179         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 180                 Dimension dim;
 181                 cell(i).metrics(m, dim);
 182         }
 183 }
 184
 185
 186 void InsetMathNest::updateBuffer(ParIterator const & it, UpdateType utype)
 187 {
 188         for (idx_type i = 0, n = nargs(); i != n; ++i)
 189                 cell(i).updateBuffer(it, utype);
 190 }
 191
 192
 193
 194 bool InsetMathNest::idxNext(Cursor & cur) const
 195 {
 196         LASSERT(&cur.inset() == this, return false);
 197         if (cur.idx() == cur.lastidx())
 198                 return false;
 199         ++cur.idx();
 200         cur.pos() = 0;
 201         return true;
 202 }
 203
 204
 205 bool InsetMathNest::idxForward(Cursor & cur) const
 206 {
 207         return idxNext(cur);
 208 }
 209
 210
 211 bool InsetMathNest::idxPrev(Cursor & cur) const
 212 {
 213         LASSERT(&cur.inset() == this, return false);
 214         if (cur.idx() == 0)
 215                 return false;
 216         --cur.idx();
 217         cur.pos() = cur.lastpos();
 218         return true;
 219 }
 220
 221
 222 bool InsetMathNest::idxBackward(Cursor & cur) const
 223 {
 224         return idxPrev(cur);
 225 }
 226
 227
 228 bool InsetMathNest::idxFirst(Cursor & cur) const
 229 {
 230         LASSERT(&cur.inset() == this, return false);
 231         if (nargs() == 0)
 232                 return false;
 233         cur.idx() = 0;
 234         cur.pos() = 0;
 235         return true;
 236 }
 237
 238
 239 bool InsetMathNest::idxLast(Cursor & cur) const
 240 {
 241         LASSERT(&cur.inset() == this, return false);
 242         if (nargs() == 0)
 243                 return false;
 244         cur.idx() = cur.lastidx();
 245         cur.pos() = cur.lastpos();
 246         return true;
 247 }
 248
 249
 250 void InsetMathNest::dump() const
 251 {
 252         odocstringstream oss;
 253         TexRow texrow(false);
 254         otexrowstream ots(oss,texrow);
 255         WriteStream os(ots);
 256         os << "---------------------------------------------\n";
 257         write(os);
 258         os << "\n";
 259         for (idx_type i = 0, n = nargs(); i != n; ++i)
 260                 os << cell(i) << "\n";
 261         os << "---------------------------------------------\n";
 262         lyxerr << to_utf8(oss.str());
 263 }
 264
 265
 266 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 267 {
 268 #if 0
 269         if (lock_)
 270                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 271                                         Color_mathlockbg);
 272 #endif
 273         setPosCache(pi, x, y);
 274 }
 275
 276
 277 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 278 {
 279         BufferView & bv = *pi.base.bv;
 280         // this should use the x/y values given, not the cached values
 281         Cursor & cur = bv.cursor();
 282         if (!cur.selection())
 283                 return;
 284         if (&cur.inset() != this)
 285                 return;
 286
 287         // FIXME: hack to get position cache warm
 288         bool const original_drawing_state = pi.pain.isDrawingEnabled();
 289         pi.pain.setDrawingEnabled(false);
 290         draw(pi, x, y);
 291         pi.pain.setDrawingEnabled(original_drawing_state);
 292
 293         CursorSlice s1 = cur.selBegin();
 294         CursorSlice s2 = cur.selEnd();
 295
 296         //lyxerr << "InsetMathNest::drawing selection: "
 297         //      << " s1: " << s1 << " s2: " << s2 << endl;
 298         if (s1.idx() == s2.idx()) {
 299                 MathData const & c = cell(s1.idx());
 300                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 301                 int x1 = g.pos.x_ + c.pos2x(pi.base.bv, s1.pos());
 302                 int y1 = g.pos.y_ - g.dim.ascent();
 303                 int x2 = g.pos.x_ + c.pos2x(pi.base.bv, s2.pos());
 304                 int y2 = g.pos.y_ + g.dim.descent();
 305                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 306         //lyxerr << "InsetMathNest::drawing selection 3: "
 307         //      << " x1: " << x1 << " x2: " << x2
 308         //      << " y1: " << y1 << " y2: " << y2 << endl;
 309         } else {
 310                 for (idx_type i = 0; i < nargs(); ++i) {
 311                         if (idxBetween(i, s1.idx(), s2.idx())) {
 312                                 MathData const & c = cell(i);
 313                                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 314                                 int x1 = g.pos.x_;
 315                                 int y1 = g.pos.y_ - g.dim.ascent();
 316                                 int x2 = g.pos.x_ + g.dim.width();
 317                                 int y2 = g.pos.y_ + g.dim.descent();
 318                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 319                         }
 320                 }
 321         }
 322 }
 323
 324
 325 void InsetMathNest::validate(LaTeXFeatures & features) const
 326 {
 327         for (idx_type i = 0; i < nargs(); ++i)
 328                 cell(i).validate(features);
 329 }
 330
 331
 332 void InsetMathNest::replace(ReplaceData & rep)
 333 {
 334         for (idx_type i = 0; i < nargs(); ++i)
 335                 cell(i).replace(rep);
 336 }
 337
 338
 339 bool InsetMathNest::contains(MathData const & ar) const
 340 {
 341         for (idx_type i = 0; i < nargs(); ++i)
 342                 if (cell(i).contains(ar))
 343                         return true;
 344         return false;
 345 }
 346
 347
 348 bool InsetMathNest::lock() const
 349 {
 350         return lock_;
 351 }
 352
 353
 354 void InsetMathNest::lock(bool l)
 355 {
 356         lock_ = l;
 357 }
 358
 359
 360 bool InsetMathNest::isActive() const
 361 {
 362         return nargs() > 0;
 363 }
 364
 365
 366 MathData InsetMathNest::glue() const
 367 {
 368         MathData ar;
 369         for (size_t i = 0; i < nargs(); ++i)
 370                 ar.append(cell(i));
 371         return ar;
 372 }
 373
 374
 375 void InsetMathNest::write(WriteStream & os) const
 376 {
 377         MathEnsurer ensurer(os, currentMode() == MATH_MODE);
 378         ModeSpecifier specifier(os, currentMode(), lockedMode());
 379         docstring const latex_name = name();
 380         os << '\\' << latex_name;
 381         for (size_t i = 0; i < nargs(); ++i) {
 382                 os.pushRowEntry(TexRow::mathEntry(id(),i));
 383                 os << '{' << cell(i) << '}';
 384                 os.popRowEntry();
 385         }
 386         if (nargs() == 0)
 387                 os.pendingSpace(true);
 388         if (lock_ && !os.latex()) {
 389                 os << "\\lyxlock";
 390                 os.pendingSpace(true);
 391         }
 392 }
 393
 394
 395 void InsetMathNest::normalize(NormalStream & os) const
 396 {
 397         os << '[' << name();
 398         for (size_t i = 0; i < nargs(); ++i)
 399                 os << ' ' << cell(i);
 400         os << ']';
 401 }
 402
 403
 404 void InsetMathNest::latex(otexstream & os, OutputParams const & runparams) const
 405 {
 406         WriteStream wi(os, runparams.moving_arg, true,
 407                         runparams.dryrun ? WriteStream::wsDryrun : WriteStream::wsDefault,
 408                         runparams.encoding);
 409         wi.canBreakLine(os.canBreakLine());
 410         if (runparams.lastid != -1) {
 411                 wi.pushRowEntry(os.texrow().textEntry(runparams.lastid,
 412                                                                                           runparams.lastpos));
 413                 write(wi);
 414                 wi.popRowEntry();
 415         } else
 416                 write(wi);
 417         // Reset parbreak status after a math inset.
 418         os.lastChar(0);
 419         os.canBreakLine(wi.canBreakLine());
 420 }
 421
 422
 423 bool InsetMathNest::setMouseHover(BufferView const * bv, bool mouse_hover)
 424         const
 425 {
 426         mouse_hover_[bv] = mouse_hover;
 427         return true;
 428 }
 429
 430
 431 bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
 432 {
 433         // FIXME: look here
 434 #if 0
 435         MathData & ar = cur.cell();
 436         // remove base-only "scripts"
 437         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 438                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 439                 if (p && p->nargs() == 1) {
 440                         MathData ar = p->nuc();
 441                         erase(i);
 442                         insert(i, ar);
 443                         cur.adjust(i, ar.size() - 1);
 444                 }
 445         }
 446
 447         // glue adjacent font insets of the same kind
 448         for (pos_type i = 0; i + 1 < size(); ++i) {
 449                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 450                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 451                 if (p && q && p->name() == q->name()) {
 452                         p->cell(0).append(q->cell(0));
 453                         erase(i + 1);
 454                         cur.adjust(i, -1);
 455                 }
 456         }
 457 #endif
 458         return false;
 459 }
 460
 461
 462 void InsetMathNest::handleFont
 463         (Cursor & cur, docstring const & arg, char const * const font)
 464 {
 465         handleFont(cur, arg, from_ascii(font));
 466 }
 467
 468
 469 void InsetMathNest::handleFont(Cursor & cur, docstring const & arg,
 470         docstring const & font)
 471 {
 472         cur.recordUndoSelection();
 473
 474         // this whole function is a hack and won't work for incremental font
 475         // changes...
 476         if (cur.inset().asInsetMath()->name() == font)
 477                 cur.handleFont(to_utf8(font));
 478         else
 479                 handleNest(cur, createInsetMath(font, cur.buffer()), arg);
 480 }
 481
 482
 483 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest)
 484 {
 485         handleNest(cur, nest, docstring());
 486 }
 487
 488
 489 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest,
 490         docstring const & arg)
 491 {
 492         CursorSlice i1 = cur.selBegin();
 493         CursorSlice i2 = cur.selEnd();
 494         if (!i1.inset().asInsetMath())
 495                 return;
 496         if (i1.idx() == i2.idx()) {
 497                 // the easy case where only one cell is selected
 498                 cur.handleNest(nest);
 499                 cur.insert(arg);
 500                 return;
 501         }
 502
 503         // multiple selected cells in a simple non-grid inset
 504         if (i1.asInsetMath()->nrows() == 0 || i1.asInsetMath()->ncols() == 0) {
 505                 for (idx_type i = i1.idx(); i <= i2.idx(); ++i) {
 506                         // select cell
 507                         cur.idx() = i;
 508                         cur.pos() = 0;
 509                         cur.resetAnchor();
 510                         cur.pos() = cur.lastpos();
 511                         cur.setSelection();
 512
 513                         // change font of cell
 514                         cur.handleNest(nest);
 515                         cur.insert(arg);
 516
 517                         // cur is in the font inset now. If the loop continues,
 518                         // we need to get outside again for the next cell
 519                         if (i + 1 <= i2.idx())
 520                                 cur.pop_back();
 521                 }
 522                 return;
 523         }
 524
 525         // the complicated case with multiple selected cells in a grid
 526         row_type r1, r2;
 527         col_type c1, c2;
 528         cap::region(i1, i2, r1, r2, c1, c2);
 529         for (row_type row = r1; row <= r2; ++row) {
 530                 for (col_type col = c1; col <= c2; ++col) {
 531                         // select cell
 532                         cur.idx() = i1.asInsetMath()->index(row, col);
 533                         cur.pos() = 0;
 534                         cur.resetAnchor();
 535                         cur.pos() = cur.lastpos();
 536                         cur.setSelection();
 537
 538                         //
 539                         cur.handleNest(nest);
 540                         cur.insert(arg);
 541
 542                         // cur is in the font inset now. If the loop continues,
 543                         // we need to get outside again for the next cell
 544                         if (col + 1 <= c2 || row + 1 <= r2)
 545                                 cur.pop_back();
 546                 }
 547         }
 548 }
 549
 550
 551 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 552 {
 553         cur.recordUndoSelection();
 554         Font font;
 555         bool b;
 556         font.fromString(to_utf8(arg), b);
 557         if (font.fontInfo().color() != Color_inherit &&
 558             font.fontInfo().color() != Color_ignore)
 559                 handleNest(cur, MathAtom(new InsetMathColor(buffer_, true, font.fontInfo().color())));
 560
 561         // FIXME: support other font changes here as well?
 562 }
 563
 564
 565 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 566 {
 567         //LYXERR0("InsetMathNest: request: " << cmd);
 568
 569         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
 570
 571         FuncCode const act = cmd.action();
 572         switch (act) {
 573
 574         case LFUN_CLIPBOARD_PASTE:
 575                 parseflg |= Parse::VERBATIM;
 576                 // fall through
 577         case LFUN_PASTE: {
 578                 if (cur.currentMode() <= TEXT_MODE)
 579                         parseflg |= Parse::TEXTMODE;
 580                 cur.recordUndoSelection();
 581                 cur.message(_("Paste"));
 582                 replaceSelection(cur);
 583                 docstring topaste;
 584                 if (cmd.argument().empty() && !theClipboard().isInternal())
 585                         topaste = theClipboard().getAsText(Clipboard::PlainTextType);
 586                 else {
 587                         size_t n = 0;
 588                         idocstringstream is(cmd.argument());
 589                         is >> n;
 590                         topaste = cap::selection(n, buffer().params().documentClassPtr());
 591                 }
 592                 cur.niceInsert(topaste, parseflg, false);
 593                 cur.clearSelection(); // bug 393
 594                 cur.forceBufferUpdate();
 595                 cur.finishUndo();
 596                 break;
 597         }
 598
 599         case LFUN_CUT:
 600                 cur.recordUndo();
 601                 cutSelection(cur, true, true);
 602                 cur.message(_("Cut"));
 603                 // Prevent stale position >= size crash
 604                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 605                 cur.normalize();
 606                 cur.forceBufferUpdate();
 607                 break;
 608
 609         case LFUN_COPY:
 610                 copySelection(cur);
 611                 cur.message(_("Copy"));
 612                 break;
 613
 614         case LFUN_MOUSE_PRESS:
 615                 lfunMousePress(cur, cmd);
 616                 break;
 617
 618         case LFUN_MOUSE_MOTION:
 619                 lfunMouseMotion(cur, cmd);
 620                 break;
 621
 622         case LFUN_MOUSE_RELEASE:
 623                 lfunMouseRelease(cur, cmd);
 624                 break;
 625
 626         case LFUN_FINISHED_LEFT: // in math, left is backwards
 627         case LFUN_FINISHED_BACKWARD:
 628                 cur.bv().cursor() = cur;
 629                 break;
 630
 631         case LFUN_FINISHED_RIGHT: // in math, right is forward
 632         case LFUN_FINISHED_FORWARD:
 633                 ++cur.pos();
 634                 cur.bv().cursor() = cur;
 635                 break;
 636
 637         case LFUN_CHAR_RIGHT:
 638         case LFUN_CHAR_LEFT:
 639         case LFUN_CHAR_BACKWARD:
 640         case LFUN_CHAR_FORWARD:
 641                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 642                 // fall through
 643         case LFUN_CHAR_RIGHT_SELECT:
 644         case LFUN_CHAR_LEFT_SELECT:
 645         case LFUN_CHAR_BACKWARD_SELECT:
 646         case LFUN_CHAR_FORWARD_SELECT: {
 647                 // are we in a selection?
 648                 bool select = (act == LFUN_CHAR_RIGHT_SELECT
 649                                            || act == LFUN_CHAR_LEFT_SELECT
 650                                            || act == LFUN_CHAR_BACKWARD_SELECT
 651                                            || act == LFUN_CHAR_FORWARD_SELECT);
 652                 // are we moving forward or backwards?
 653                 // If the command was RIGHT or LEFT, then whether we're moving forward
 654                 // or backwards depends on the cursor movement mode (logical or visual):
 655                 //  * in visual mode, since math is always LTR, right -> forward,
 656                 //    left -> backwards
 657                 //  * in logical mode, the mapping is determined by the
 658                 //    reverseDirectionNeeded() function
 659
 660                 bool forward;
 661                 FuncCode finish_lfun;
 662
 663                 if (act == LFUN_CHAR_FORWARD
 664                                 || act == LFUN_CHAR_FORWARD_SELECT) {
 665                         forward = true;
 666                         finish_lfun = LFUN_FINISHED_FORWARD;
 667                 }
 668                 else if (act == LFUN_CHAR_BACKWARD
 669                                 || act == LFUN_CHAR_BACKWARD_SELECT) {
 670                         forward = false;
 671                         finish_lfun = LFUN_FINISHED_BACKWARD;
 672                 }
 673                 else {
 674                         bool right = (act == LFUN_CHAR_RIGHT_SELECT
 675                                                   || act == LFUN_CHAR_RIGHT);
 676                         if (lyxrc.visual_cursor || !cur.reverseDirectionNeeded())
 677                                 forward = right;
 678                         else
 679                                 forward = !right;
 680
 681                         if (right)
 682                                 finish_lfun = LFUN_FINISHED_RIGHT;
 683                         else
 684                                 finish_lfun = LFUN_FINISHED_LEFT;
 685                 }
 686                 // Now that we know exactly what we want to do, let's do it!
 687                 cur.selHandle(select);
 688                 cur.clearTargetX();
 689                 cur.macroModeClose();
 690                 // try moving forward or backwards as necessary...
 691                 if (!(forward ? cursorMathForward(cur) : cursorMathBackward(cur))) {
 692                         // ... and if movement failed, then finish forward or backwards
 693                         // as necessary
 694                         cmd = FuncRequest(finish_lfun);
 695                         cur.undispatched();
 696                 }
 697                 break;
 698         }
 699
 700         case LFUN_DOWN:
 701         case LFUN_UP:
 702                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 703                 // fall through
 704         case LFUN_DOWN_SELECT:
 705         case LFUN_UP_SELECT: {
 706                 // close active macro
 707                 if (cur.inMacroMode()) {
 708                         cur.macroModeClose();
 709                         break;
 710                 }
 711
 712                 // stop/start the selection
 713                 bool select = act == LFUN_DOWN_SELECT ||
 714                         act == LFUN_UP_SELECT;
 715                 cur.selHandle(select);
 716
 717                 // handle autocorrect:
 718                 cur.autocorrect() = false;
 719                 cur.message(_("Autocorrect Off ('!' to enter)"));
 720
 721                 // go up/down
 722                 bool up = act == LFUN_UP || act == LFUN_UP_SELECT;
 723                 bool successful = cur.upDownInMath(up);
 724                 if (successful)
 725                         break;
 726
 727                 if (cur.fixIfBroken())
 728                         // FIXME: Something bad happened. We pass the corrected Cursor
 729                         // instead of letting things go worse.
 730                         break;
 731
 732                 // We did not manage to move the cursor.
 733                 cur.undispatched();
 734                 break;
 735         }
 736
 737         case LFUN_MOUSE_DOUBLE:
 738         case LFUN_MOUSE_TRIPLE:
 739         case LFUN_WORD_SELECT:
 740                 cur.pos() = 0;
 741                 cur.idx() = 0;
 742                 cur.resetAnchor();
 743                 cur.setSelection(true);
 744                 cur.idx() = cur.lastidx();
 745                 cur.pos() = cur.lastpos();
 746                 cur.bv().cursor() = cur;
 747                 break;
 748
 749         case LFUN_PARAGRAPH_UP:
 750         case LFUN_PARAGRAPH_DOWN:
 751                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 752                 // fall through
 753         case LFUN_PARAGRAPH_UP_SELECT:
 754         case LFUN_PARAGRAPH_DOWN_SELECT:
 755                 break;
 756
 757         case LFUN_LINE_BEGIN:
 758         case LFUN_WORD_BACKWARD:
 759         case LFUN_WORD_LEFT:
 760                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 761                 // fall through
 762         case LFUN_LINE_BEGIN_SELECT:
 763         case LFUN_WORD_BACKWARD_SELECT:
 764         case LFUN_WORD_LEFT_SELECT:
 765                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
 766                                 act == LFUN_WORD_LEFT_SELECT ||
 767                                 act == LFUN_LINE_BEGIN_SELECT);
 768                 cur.macroModeClose();
 769                 if (cur.pos() != 0) {
 770                         cur.pos() = 0;
 771                 } else if (cur.col() != 0) {
 772                         cur.idx() -= cur.col();
 773                         cur.pos() = 0;
 774                 } else if (cur.idx() != 0) {
 775                         cur.idx() = 0;
 776                         cur.pos() = 0;
 777                 } else {
 778                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 779                         cur.undispatched();
 780                 }
 781                 break;
 782
 783         case LFUN_WORD_FORWARD:
 784         case LFUN_WORD_RIGHT:
 785         case LFUN_LINE_END:
 786                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 787                 // fall through
 788         case LFUN_WORD_FORWARD_SELECT:
 789         case LFUN_WORD_RIGHT_SELECT:
 790         case LFUN_LINE_END_SELECT:
 791                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
 792                                 act == LFUN_WORD_RIGHT_SELECT ||
 793                                 act == LFUN_LINE_END_SELECT);
 794                 cur.macroModeClose();
 795                 cur.clearTargetX();
 796                 if (cur.pos() != cur.lastpos()) {
 797                         cur.pos() = cur.lastpos();
 798                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 799                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 800                         cur.pos() = cur.lastpos();
 801                 } else if (cur.idx() != cur.lastidx()) {
 802                         cur.idx() = cur.lastidx();
 803                         cur.pos() = cur.lastpos();
 804                 } else {
 805                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 806                         cur.undispatched();
 807                 }
 808                 break;
 809
 810         case LFUN_CELL_FORWARD:
 811                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 812                 cur.inset().idxNext(cur);
 813                 break;
 814
 815         case LFUN_CELL_BACKWARD:
 816                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 817                 cur.inset().idxPrev(cur);
 818                 break;
 819
 820         case LFUN_WORD_DELETE_BACKWARD:
 821         case LFUN_CHAR_DELETE_BACKWARD:
 822                 if (cur.pos() == 0)
 823                         // May affect external cell:
 824                         cur.recordUndoInset();
 825                 else if (!cur.inMacroMode())
 826                         cur.recordUndoSelection();
 827                 // if the inset can not be removed from within, delete it
 828                 if (!cur.backspace()) {
 829                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 830                         cur.innerText()->dispatch(cur, cmd);
 831                 }
 832                 break;
 833
 834         case LFUN_WORD_DELETE_FORWARD:
 835         case LFUN_CHAR_DELETE_FORWARD:
 836                 if (cur.pos() == cur.lastpos())
 837                         // May affect external cell:
 838                         cur.recordUndoInset();
 839                 else
 840                         cur.recordUndoSelection();
 841                 // if the inset can not be removed from within, delete it
 842                 if (!cur.erase()) {
 843                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 844                         cur.innerText()->dispatch(cur, cmd);
 845                 }
 846                 break;
 847
 848         case LFUN_ESCAPE:
 849                 if (cur.selection())
 850                         cur.clearSelection();
 851                 else  {
 852                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 853                         cur.undispatched();
 854                 }
 855                 break;
 856
 857         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 858         // that is traversed by a single <CursorLeft>/<CursorRight>.
 859         case LFUN_INSET_TOGGLE:
 860                 cur.recordUndo();
 861                 lock(!lock());
 862                 cur.popForward();
 863                 break;
 864
 865         case LFUN_SELF_INSERT:
 866                 if (cmd.argument().size() != 1) {
 867                         cur.recordUndoSelection();
 868                         docstring const arg = cmd.argument();
 869                         if (!interpretString(cur, arg))
 870                                 cur.insert(arg);
 871                         break;
 872                 }
 873                 // Don't record undo steps if we are in macro mode and thus
 874                 // cmd.argument is the next character of the macro name.
 875                 // Otherwise we'll get an invalid cursor if we undo after
 876                 // the macro was finished and the macro is a known command,
 877                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 878                 // the InsetMathUnknown with name "frac" by an empty
 879                 // InsetMathFrac -> a pos value > 0 is invalid.
 880                 // A side effect is that an undo before the macro is finished
 881                 // undoes the complete macro, not only the last character.
 882                 // At the time we hit '\' we are not in macro mode, still.
 883                 if (!cur.inMacroMode())
 884                         cur.recordUndoSelection();
 885
 886                 // spacial handling of space. If we insert an inset
 887                 // via macro mode, we want to put the cursor inside it
 888                 // if relevant. Think typing "\frac<space>".
 889                 if (cmd.argument()[0] == ' '
 890                     && cur.inMacroMode() && cur.macroName() != "\\"
 891                     && cur.macroModeClose() && cur.pos() > 0) {
 892                         MathAtom const atom = cur.prevAtom();
 893                         if (atom->asNestInset() && atom->isActive()) {
 894                                 cur.posBackward();
 895                                 cur.pushBackward(*cur.nextInset());
 896                         }
 897                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 898                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 899                         cur.undispatched();
 900                 }
 901                 break;
 902
 903         //case LFUN_SERVER_GET_XY:
 904         //      break;
 905
 906         case LFUN_SERVER_SET_XY: {
 907                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 908                 int x = 0;
 909                 int y = 0;
 910                 istringstream is(to_utf8(cmd.argument()));
 911                 is >> x >> y;
 912                 cur.setScreenPos(x, y);
 913                 break;
 914         }
 915
 916         // Special casing for superscript in case of LyX handling
 917         // dead-keys:
 918         case LFUN_ACCENT_CIRCUMFLEX:
 919                 if (cmd.argument().empty()) {
 920                         // do superscript if LyX handles
 921                         // deadkeys
 922                         cur.recordUndoSelection();
 923                         script(cur, true, grabAndEraseSelection(cur));
 924                 }
 925                 break;
 926
 927         case LFUN_ACCENT_UMLAUT:
 928         case LFUN_ACCENT_ACUTE:
 929         case LFUN_ACCENT_GRAVE:
 930         case LFUN_ACCENT_BREVE:
 931         case LFUN_ACCENT_DOT:
 932         case LFUN_ACCENT_MACRON:
 933         case LFUN_ACCENT_CARON:
 934         case LFUN_ACCENT_TILDE:
 935         case LFUN_ACCENT_CEDILLA:
 936         case LFUN_ACCENT_CIRCLE:
 937         case LFUN_ACCENT_UNDERDOT:
 938         case LFUN_ACCENT_TIE:
 939         case LFUN_ACCENT_OGONEK:
 940         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 941                 break;
 942
 943         //  Math fonts
 944         case LFUN_TEXTSTYLE_APPLY:
 945         case LFUN_TEXTSTYLE_UPDATE:
 946                 handleFont2(cur, cmd.argument());
 947                 break;
 948
 949         case LFUN_FONT_BOLD:
 950                 if (currentMode() <= TEXT_MODE)
 951                         handleFont(cur, cmd.argument(), "textbf");
 952                 else
 953                         handleFont(cur, cmd.argument(), "mathbf");
 954                 break;
 955         case LFUN_FONT_BOLDSYMBOL:
 956                 if (currentMode() <= TEXT_MODE)
 957                         handleFont(cur, cmd.argument(), "textbf");
 958                 else
 959                         handleFont(cur, cmd.argument(), "boldsymbol");
 960                 break;
 961         case LFUN_FONT_SANS:
 962                 if (currentMode() <= TEXT_MODE)
 963                         handleFont(cur, cmd.argument(), "textsf");
 964                 else
 965                         handleFont(cur, cmd.argument(), "mathsf");
 966                 break;
 967         case LFUN_FONT_EMPH:
 968                 if (currentMode() <= TEXT_MODE)
 969                         handleFont(cur, cmd.argument(), "emph");
 970                 else
 971                         handleFont(cur, cmd.argument(), "mathcal");
 972                 break;
 973         case LFUN_FONT_ROMAN:
 974                 if (currentMode() <= TEXT_MODE)
 975                         handleFont(cur, cmd.argument(), "textrm");
 976                 else
 977                         handleFont(cur, cmd.argument(), "mathrm");
 978                 break;
 979         case LFUN_FONT_TYPEWRITER:
 980                 if (currentMode() <= TEXT_MODE)
 981                         handleFont(cur, cmd.argument(), "texttt");
 982                 else
 983                         handleFont(cur, cmd.argument(), "mathtt");
 984                 break;
 985         case LFUN_FONT_FRAK:
 986                 handleFont(cur, cmd.argument(), "mathfrak");
 987                 break;
 988         case LFUN_FONT_ITAL:
 989                 if (currentMode() <= TEXT_MODE)
 990                         handleFont(cur, cmd.argument(), "textit");
 991                 else
 992                         handleFont(cur, cmd.argument(), "mathit");
 993                 break;
 994         case LFUN_FONT_NOUN:
 995                 if (currentMode() <= TEXT_MODE)
 996                         // FIXME: should be "noun"
 997                         handleFont(cur, cmd.argument(), "textsc");
 998                 else
 999                         handleFont(cur, cmd.argument(), "mathbb");
1000                 break;
1001         case LFUN_FONT_DEFAULT:
1002                 handleFont(cur, cmd.argument(), "textnormal");
1003                 break;
1004         case LFUN_FONT_UNDERLINE:
1005                 cur.recordUndo();
1006                 cur.handleNest(createInsetMath("underline", cur.buffer()));
1007                 break;
1008
1009         case LFUN_MATH_MODE: {
1010 #if 1
1011                 // ignore math-mode on when already in math mode
1012                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
1013                         break;
1014                 cur.recordUndoSelection();
1015                 cur.macroModeClose();
1016                 docstring const save_selection = grabAndEraseSelection(cur);
1017                 selClearOrDel(cur);
1018                 if (currentMode() <= Inset::TEXT_MODE)
1019                         cur.plainInsert(MathAtom(new InsetMathEnsureMath(buffer_)));
1020                 else
1021                         cur.plainInsert(createInsetMath("text", buffer_));
1022                 cur.posBackward();
1023                 cur.pushBackward(*cur.nextInset());
1024                 cur.niceInsert(save_selection);
1025                 cur.forceBufferUpdate();
1026 #else
1027                 if (currentMode() == Inset::TEXT_MODE) {
1028                         cur.recordUndoSelection();
1029                         cur.niceInsert(MathAtom(new InsetMathHull("simple", cur.buffer())));
1030                         cur.message(_("create new math text environment ($...$)"));
1031                 } else {
1032                         handleFont(cur, cmd.argument(), "textrm");
1033                         cur.message(_("entered math text mode (textrm)"));
1034                 }
1035 #endif
1036                 break;
1037         }
1038
1039         case LFUN_REGEXP_MODE: {
1040                 InsetMath * im = cur.inset().asInsetMath();
1041                 if (im) {
1042                         InsetMathHull * i = im->asHullInset();
1043                         if (i && i->getType() == hullRegexp) {
1044                                 cur.message(_("Already in regular expression mode"));
1045                                 break;
1046                         }
1047                 }
1048                 cur.macroModeClose();
1049                 docstring const save_selection = grabAndEraseSelection(cur);
1050                 selClearOrDel(cur);
1051                 cur.plainInsert(MathAtom(new InsetMathHull(buffer_, hullRegexp)));
1052                 cur.posBackward();
1053                 cur.pushBackward(*cur.nextInset());
1054                 cur.niceInsert(save_selection);
1055                 cur.message(_("Regular expression editor mode"));
1056                 break;
1057         }
1058
1059         case LFUN_MATH_FONT_STYLE: {
1060                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, '\\' + cmd.argument());
1061                 doDispatch(cur, fr);
1062                 break;
1063         }
1064
1065         case LFUN_MATH_SIZE: {
1066                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, cmd.argument());
1067                 doDispatch(cur, fr);
1068                 break;
1069         }
1070
1071         case LFUN_MATH_MATRIX: {
1072                 cur.recordUndo();
1073                 unsigned int m = 1;
1074                 unsigned int n = 1;
1075                 docstring v_align;
1076                 docstring h_align;
1077                 idocstringstream is(cmd.argument());
1078                 is >> m >> n >> v_align >> h_align;
1079                 if (m < 1)
1080                         m = 1;
1081                 if (n < 1)
1082                         n = 1;
1083                 v_align += 'c';
1084                 cur.niceInsert(MathAtom(new InsetMathArray(buffer_,
1085                         from_ascii("array"), m, n, (char)v_align[0], h_align)));
1086                 break;
1087         }
1088
1089         case LFUN_MATH_AMS_MATRIX: {
1090                 cur.recordUndo();
1091                 unsigned int m = 1;
1092                 unsigned int n = 1;
1093                 docstring name = from_ascii("matrix");
1094                 idocstringstream is(cmd.argument());
1095                 is >> m >> n >> name;
1096                 if (m < 1)
1097                         m = 1;
1098                 if (n < 1)
1099                         n = 1;
1100                 // check if we have a valid decoration
1101                 if (name != "pmatrix" && name != "bmatrix"
1102                         && name != "Bmatrix" && name != "vmatrix"
1103                         && name != "Vmatrix" && name != "matrix")
1104                         name = from_ascii("matrix");
1105
1106                 cur.niceInsert(
1107                         MathAtom(new InsetMathAMSArray(buffer_, name, m, n)));
1108                 break;
1109         }
1110
1111         case LFUN_MATH_DELIM: {
1112                 docstring ls;
1113                 docstring rs = split(cmd.argument(), ls, ' ');
1114                 // Reasonable default values
1115                 if (ls.empty())
1116                         ls = '(';
1117                 if (rs.empty())
1118                         rs = ')';
1119                 cur.recordUndo();
1120                 cur.handleNest(MathAtom(new InsetMathDelim(buffer_, ls, rs)));
1121                 break;
1122         }
1123
1124         case LFUN_MATH_BIGDELIM: {
1125                 docstring const lname  = from_utf8(cmd.getArg(0));
1126                 docstring const ldelim = from_utf8(cmd.getArg(1));
1127                 docstring const rname  = from_utf8(cmd.getArg(2));
1128                 docstring const rdelim = from_utf8(cmd.getArg(3));
1129                 latexkeys const * l = in_word_set(lname);
1130                 bool const have_l = l && l->inset == "big" &&
1131                                     InsetMathBig::isBigInsetDelim(ldelim);
1132                 l = in_word_set(rname);
1133                 bool const have_r = l && l->inset == "big" &&
1134                                     InsetMathBig::isBigInsetDelim(rdelim);
1135                 // We mimic LFUN_MATH_DELIM in case we have an empty left
1136                 // or right delimiter.
1137                 if (have_l || have_r) {
1138                         cur.recordUndo();
1139                         docstring const selection = grabAndEraseSelection(cur);
1140                         selClearOrDel(cur);
1141                         if (have_l)
1142                                 cur.insert(MathAtom(new InsetMathBig(lname,
1143                                                                 ldelim)));
1144                         // first insert the right delimiter and then go back
1145                         // and re-insert the selection (bug 7088)
1146                         if (have_r) {
1147                                 cur.insert(MathAtom(new InsetMathBig(rname,
1148                                                                 rdelim)));
1149                                 cur.posBackward();
1150                         }
1151                         cur.niceInsert(selection);
1152                 }
1153                 // Don't call cur.undispatched() if we did nothing, this would
1154                 // lead to infinite recursion via Text::dispatch().
1155                 break;
1156         }
1157
1158         case LFUN_SPACE_INSERT: {
1159                 cur.recordUndoSelection();
1160                 string const name = cmd.getArg(0);
1161                 if (name == "normal")
1162                         cur.insert(MathAtom(new InsetMathSpace(" ", "")));
1163                 else if (name == "protected")
1164                         cur.insert(MathAtom(new InsetMathSpace("~", "")));
1165                 else if (name == "thin" || name == "med" || name == "thick")
1166                         cur.insert(MathAtom(new InsetMathSpace(name + "space", "")));
1167                 else if (name == "hfill*")
1168                         cur.insert(MathAtom(new InsetMathSpace("hspace*{\\fill}", "")));
1169                 else if (name == "quad" || name == "qquad" ||
1170                          name == "enspace" || name == "enskip" ||
1171                          name == "negthinspace" || name == "negmedspace" ||
1172                          name == "negthickspace" || name == "hfill")
1173                         cur.insert(MathAtom(new InsetMathSpace(name, "")));
1174                 else if (name == "hspace" || name == "hspace*") {
1175                         string const len = cmd.getArg(1);
1176                         if (len.empty() || !isValidLength(len)) {
1177                                 lyxerr << "LyX function 'space-insert " << name << "' "
1178                                           "needs a valid length argument." << endl;
1179                                 break;
1180                         }
1181                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1182                 } else
1183                         cur.insert(MathAtom(new InsetMathSpace));
1184                 break;
1185         }
1186
1187         case LFUN_MATH_SPACE:
1188                 cur.recordUndoSelection();
1189                 if (cmd.argument().empty())
1190                         cur.insert(MathAtom(new InsetMathSpace));
1191                 else {
1192                         string const name = cmd.getArg(0);
1193                         string const len = cmd.getArg(1);
1194                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1195                 }
1196                 break;
1197
1198         case LFUN_ERT_INSERT:
1199                 // interpret this as if a backslash was typed
1200                 cur.recordUndo();
1201                 interpretChar(cur, '\\');
1202                 break;
1203
1204         case LFUN_MATH_SUBSCRIPT:
1205                 // interpret this as if a _ was typed
1206                 cur.recordUndoSelection();
1207                 interpretChar(cur, '_');
1208                 break;
1209
1210         case LFUN_MATH_SUPERSCRIPT:
1211                 // interpret this as if a ^ was typed
1212                 cur.recordUndoSelection();
1213                 interpretChar(cur, '^');
1214                 break;
1215
1216         case LFUN_MATH_MACRO_FOLD:
1217         case LFUN_MATH_MACRO_UNFOLD: {
1218                 Cursor it = cur;
1219                 bool fold = act == LFUN_MATH_MACRO_FOLD;
1220                 bool found = findMacroToFoldUnfold(it, fold);
1221                 if (found) {
1222                         MathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1223                         cur.recordUndoInset();
1224                         if (fold)
1225                                 macro->fold(cur);
1226                         else
1227                                 macro->unfold(cur);
1228                 }
1229                 break;
1230         }
1231
1232         case LFUN_QUOTE_INSERT:
1233                 // interpret this as if a straight " was typed
1234                 cur.recordUndoSelection();
1235                 interpretChar(cur, '\"');
1236                 break;
1237
1238 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1239 // handling such that "self-insert" works on "arbitrary stuff" too, and
1240 // math-insert only handles special math things like "matrix".
1241         case LFUN_MATH_INSERT: {
1242                 cur.recordUndoSelection();
1243                 if (cmd.argument() == "^" || cmd.argument() == "_")
1244                         interpretChar(cur, cmd.argument()[0]);
1245                 else {
1246                         MathData ar;
1247                         asArray(cmd.argument(), ar);
1248                         if (cur.selection() && ar.size() == 1
1249                             && ar[0]->asNestInset()
1250                             && ar[0]->asNestInset()->nargs() > 1)
1251                                 handleNest(cur, ar[0]);
1252                         else
1253                                 cur.niceInsert(cmd.argument());
1254                 }
1255                 break;
1256         }
1257
1258         case LFUN_UNICODE_INSERT: {
1259                 if (cmd.argument().empty())
1260                         break;
1261                 docstring hexstring = cmd.argument();
1262                 if (isHex(hexstring)) {
1263                         char_type c = hexToInt(hexstring);
1264                         if (c >= 32 && c < 0x10ffff) {
1265                                 docstring s = docstring(1, c);
1266                                 FuncCode code = currentMode() == MATH_MODE ?
1267                                         LFUN_MATH_INSERT : LFUN_SELF_INSERT;
1268                                 lyx::dispatch(FuncRequest(code, s));
1269                         }
1270                 }
1271                 break;
1272         }
1273
1274         case LFUN_DIALOG_SHOW_NEW_INSET: {
1275                 docstring const & name = cmd.argument();
1276                 string data;
1277                 if (name == "ref") {
1278                         InsetMathRef tmp(buffer_, name);
1279                         data = tmp.createDialogStr();
1280                         cur.bv().showDialog(to_utf8(name), data);
1281                 } else if (name == "mathspace") {
1282                         cur.bv().showDialog(to_utf8(name));
1283                 }
1284                 break;
1285         }
1286
1287         case LFUN_INSET_INSERT: {
1288                 MathData ar;
1289                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1290                         cur.recordUndoSelection();
1291                         cur.insert(ar);
1292                         cur.forceBufferUpdate();
1293                 } else
1294                         cur.undispatched();
1295                 break;
1296         }
1297         case LFUN_INSET_DISSOLVE:
1298                 if (!asHullInset()) {
1299                         cur.recordUndoInset();
1300                         cur.pullArg();
1301                 }
1302                 break;
1303
1304         default:
1305                 InsetMath::doDispatch(cur, cmd);
1306                 break;
1307         }
1308 }
1309
1310
1311 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1312         // look for macro to open/close, but stay in mathed
1313         for (; !it.empty(); it.pop_back()) {
1314
1315                 // go backward through the current cell
1316                 Inset * inset = it.nextInset();
1317                 while (inset && inset->asInsetMath()) {
1318                         MathMacro * macro = inset->asInsetMath()->asMacro();
1319                         if (macro) {
1320                                 // found the an macro to open/close?
1321                                 if (macro->folded() != fold)
1322                                         return true;
1323
1324                                 // Wrong folding state.
1325                                 // If this was the first we see in this slice, look further left,
1326                                 // otherwise go up.
1327                                 if (inset != it.nextInset())
1328                                         break;
1329                         }
1330
1331                         // go up if this was the left most position
1332                         if (it.pos() == 0)
1333                                 break;
1334
1335                         // go left
1336                         it.pos()--;
1337                         inset = it.nextInset();
1338                 }
1339         }
1340
1341         return false;
1342 }
1343
1344
1345 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1346                 FuncStatus & flag) const
1347 {
1348         // the font related toggles
1349         //string tc = "mathnormal";
1350         bool ret = true;
1351         string const arg = to_utf8(cmd.argument());
1352         switch (cmd.action()) {
1353         case LFUN_INSET_MODIFY:
1354                 flag.setEnabled(false);
1355                 break;
1356 #if 0
1357         case LFUN_INSET_MODIFY:
1358                 // FIXME: check temporarily disabled
1359                 // valign code
1360                 char align = mathcursor::valign();
1361                 if (align == '\0') {
1362                         enable = false;
1363                         break;
1364                 }
1365                 if (cmd.argument().empty()) {
1366                         flag.clear();
1367                         break;
1368                 }
1369                 if (!contains("tcb", cmd.argument()[0])) {
1370                         enable = false;
1371                         break;
1372                 }
1373                 flag.setOnOff(cmd.argument()[0] == align);
1374                 break;
1375 #endif
1376         /// We have to handle them since 1.4 blocks all unhandled actions
1377         case LFUN_FONT_ITAL:
1378         case LFUN_FONT_BOLD:
1379         case LFUN_FONT_BOLDSYMBOL:
1380         case LFUN_FONT_SANS:
1381         case LFUN_FONT_EMPH:
1382         case LFUN_FONT_TYPEWRITER:
1383         case LFUN_FONT_NOUN:
1384         case LFUN_FONT_ROMAN:
1385         case LFUN_FONT_DEFAULT:
1386                 flag.setEnabled(true);
1387                 break;
1388
1389         // we just need to be in math mode to enable that
1390         case LFUN_MATH_SIZE:
1391         case LFUN_MATH_SPACE:
1392         case LFUN_MATH_EXTERN:
1393                 flag.setEnabled(true);
1394                 break;
1395
1396         case LFUN_FONT_UNDERLINE:
1397         case LFUN_FONT_FRAK:
1398                 flag.setEnabled(currentMode() != TEXT_MODE);
1399                 break;
1400
1401         case LFUN_MATH_FONT_STYLE: {
1402                 bool const textarg =
1403                         arg == "textbf"   || arg == "textsf" ||
1404                         arg == "textrm"   || arg == "textmd" ||
1405                         arg == "textit"   || arg == "textsc" ||
1406                         arg == "textsl"   || arg == "textup" ||
1407                         arg == "texttt"   || arg == "textbb" ||
1408                         arg == "textnormal";
1409                 flag.setEnabled(currentMode() != TEXT_MODE || textarg);
1410                 break;
1411         }
1412
1413         case LFUN_MATH_MODE:
1414                 // forbid "math-mode on" in math mode to prevent irritating
1415                 // behaviour of menu entries (bug 6709)
1416                 flag.setEnabled(currentMode() == TEXT_MODE || arg != "on");
1417                 break;
1418
1419         case LFUN_MATH_INSERT:
1420                 flag.setEnabled(currentMode() != TEXT_MODE);
1421                 break;
1422
1423         case LFUN_MATH_AMS_MATRIX:
1424         case LFUN_MATH_MATRIX:
1425                 flag.setEnabled(currentMode() == MATH_MODE);
1426                 break;
1427
1428         case LFUN_INSET_INSERT: {
1429                 // Don't test createMathInset_fromDialogStr(), since
1430                 // getStatus is not called with a valid reference and the
1431                 // dialog would not be applyable.
1432                 string const name = cmd.getArg(0);
1433                 flag.setEnabled(name == "ref" || name == "mathspace");
1434                 break;
1435         }
1436
1437         case LFUN_DIALOG_SHOW_NEW_INSET: {
1438                 docstring const & name = cmd.argument();
1439                 if (name == "space")
1440                         flag.setEnabled(false);
1441                 break;
1442         }
1443
1444
1445         case LFUN_MATH_DELIM:
1446         case LFUN_MATH_BIGDELIM:
1447                 // Don't do this with multi-cell selections
1448                 flag.setEnabled(cur.selBegin().idx() == cur.selEnd().idx());
1449                 break;
1450
1451         case LFUN_MATH_MACRO_FOLD:
1452         case LFUN_MATH_MACRO_UNFOLD: {
1453                 Cursor it = cur;
1454                 bool found = findMacroToFoldUnfold(it, cmd.action() == LFUN_MATH_MACRO_FOLD);
1455                 flag.setEnabled(found);
1456                 break;
1457         }
1458
1459         case LFUN_SPECIALCHAR_INSERT:
1460         case LFUN_SCRIPT_INSERT:
1461                 // FIXME: These would probably make sense in math-text mode
1462                 flag.setEnabled(false);
1463                 break;
1464
1465         case LFUN_CAPTION_INSERT:
1466                 flag.setEnabled(false);
1467                 break;
1468
1469         case LFUN_SPACE_INSERT: {
1470                 docstring const & name = cmd.argument();
1471                 if (name == "visible")
1472                         flag.setEnabled(false);
1473                 break;
1474         }
1475
1476         case LFUN_INSET_DISSOLVE:
1477                 flag.setEnabled(!asHullInset());
1478                 break;
1479
1480         case LFUN_PASTE: {
1481                 docstring const & name = cmd.argument();
1482                 if (name == "html" || name == "latex")
1483                         flag.setEnabled(false);
1484                 break;
1485         }
1486
1487         default:
1488                 ret = false;
1489                 break;
1490         }
1491         return ret;
1492 }
1493
1494
1495 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1496 {
1497         cur.push(*this);
1498         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_RIGHT ||
1499                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1500         cur.idx() = enter_front ? 0 : cur.lastidx();
1501         cur.pos() = enter_front ? 0 : cur.lastpos();
1502         cur.resetAnchor();
1503         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1504 }
1505
1506
1507 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1508 {
1509         int idx_min = 0;
1510         int dist_min = 1000000;
1511         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1512                 int const d = cell(i).dist(cur.bv(), x, y);
1513                 if (d < dist_min) {
1514                         dist_min = d;
1515                         idx_min = i;
1516                 }
1517         }
1518         MathData & ar = cell(idx_min);
1519         cur.push(*this);
1520         cur.idx() = idx_min;
1521         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1522
1523         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1524         if (dist_min == 0) {
1525                 // hit inside cell
1526                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1527                         if (ar[i]->covers(cur.bv(), x, y))
1528                                 return ar[i].nucleus()->editXY(cur, x, y);
1529         }
1530         return this;
1531 }
1532
1533
1534 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1535 {
1536         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1537         BufferView & bv = cur.bv();
1538         if (cmd.button() == mouse_button::button3) {
1539                 // Don't do anything if we right-click a
1540                 // selection, a context menu will popup.
1541                 if (bv.cursor().selection() && cur >= bv.cursor().selectionBegin()
1542                       && cur < bv.cursor().selectionEnd()) {
1543                         cur.noScreenUpdate();
1544                         return;
1545                 }
1546         }
1547         bool do_selection = cmd.button() == mouse_button::button1
1548                 && cmd.argument() == "region-select";
1549         bv.mouseSetCursor(cur, do_selection);
1550         if (cmd.button() == mouse_button::button1) {
1551                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1552                 // Update the cursor update flags as needed:
1553                 //
1554                 // Update::Decoration: tells to update the decoration
1555                 //                     (visual box corners that define
1556                 //                     the inset)/
1557                 // Update::FitCursor: adjust the screen to the cursor
1558                 //                    position if needed
1559                 // cur.result().update(): don't overwrite previously set flags.
1560                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor
1561                                 | cur.result().screenUpdate());
1562         } else if (cmd.button() == mouse_button::button2 && lyxrc.mouse_middlebutton_paste) {
1563                 if (cap::selection()) {
1564                         // See comment in Text::dispatch why we do this
1565                         cap::copySelectionToStack();
1566                         cmd = FuncRequest(LFUN_PASTE, "0");
1567                         doDispatch(bv.cursor(), cmd);
1568                 } else {
1569                         MathData ar;
1570                         asArray(theSelection().get(), ar);
1571                         bv.cursor().insert(ar);
1572                 }
1573         }
1574 }
1575
1576
1577 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1578 {
1579         // only select with button 1
1580         if (cmd.button() != mouse_button::button1)
1581                 return;
1582
1583         Cursor & bvcur = cur.bv().cursor();
1584
1585         // ignore motions deeper nested than the real anchor
1586         if (!bvcur.realAnchor().hasPart(cur)) {
1587                 cur.undispatched();
1588                 return;
1589         }
1590
1591         CursorSlice old = bvcur.top();
1592
1593         // We continue with our existing selection or start a new one, so don't
1594         // reset the anchor.
1595         bvcur.setCursor(cur);
1596         // Did we actually move?
1597         if (cur.top() == old)
1598                 // We didn't move one iota, so no need to change selection status
1599                 // or update the screen.
1600                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1601         else
1602                 bvcur.setSelection();
1603 }
1604
1605
1606 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1607 {
1608         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1609
1610         if (cmd.button() == mouse_button::button1) {
1611                 if (!cur.selection())
1612                         cur.noScreenUpdate();
1613                 else {
1614                         Cursor & bvcur = cur.bv().cursor();
1615                         bvcur.setSelection(true);
1616                 }
1617                 return;
1618         }
1619
1620         cur.undispatched();
1621 }
1622
1623
1624 bool InsetMathNest::interpretChar(Cursor & cur, char_type const c)
1625 {
1626         //lyxerr << "interpret 2: '" << c << "'" << endl;
1627         docstring save_selection;
1628         if (c == '^' || c == '_')
1629                 save_selection = grabAndEraseSelection(cur);
1630
1631         cur.clearTargetX();
1632         Buffer * buf = cur.buffer();
1633
1634         // handle macroMode
1635         if (cur.inMacroMode()) {
1636                 docstring name = cur.macroName();
1637
1638                 /// are we currently typing '#1' or '#2' or...?
1639                 if (name == "\\#") {
1640                         cur.backspace();
1641                         int n = c - '0';
1642                         if (n >= 1 && n <= 9)
1643                                 cur.insert(new MathMacroArgument(n));
1644                         return true;
1645                 }
1646
1647                 // do not finish macro for known * commands
1648                 bool star_macro = c == '*'
1649                         && (in_word_set(name.substr(1) + '*')
1650                             || cur.buffer()->getMacro(name.substr(1) + "*", cur, true));
1651                 if (isAlphaASCII(c) || star_macro) {
1652                         cur.activeMacro()->setName(name + docstring(1, c));
1653                         return true;
1654                 }
1655
1656                 // handle 'special char' macros
1657                 if (name == "\\") {
1658                         // remove the '\\'
1659                         if (c == '\\') {
1660                                 cur.backspace();
1661                                 if (currentMode() <= InsetMath::TEXT_MODE)
1662                                         cur.niceInsert(createInsetMath("textbackslash", buf));
1663                                 else
1664                                         cur.niceInsert(createInsetMath("backslash", buf));
1665                         } else if (c == '^' && currentMode() == InsetMath::MATH_MODE) {
1666                                 cur.backspace();
1667                                 cur.niceInsert(createInsetMath("mathcircumflex", buf));
1668                         } else if (c == '{' || c == '%') {
1669                                 //using the saved selection as argument
1670                                 InsetMathUnknown * p = cur.activeMacro();
1671                                 p->finalize();
1672                                 MathData sel(cur.buffer());
1673                                 asArray(p->selection(), sel);
1674                                 cur.backspace();
1675                                 if (c == '{')
1676                                         cur.niceInsert(MathAtom(new InsetMathBrace(sel)));
1677                                 else
1678                                         cur.niceInsert(MathAtom(new InsetMathComment(sel)));
1679                         } else if (c == '#') {
1680                                 LASSERT(cur.activeMacro(), return false);
1681                                 cur.activeMacro()->setName(name + docstring(1, c));
1682                         } else {
1683                                 cur.backspace();
1684                                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1685                         }
1686                         return true;
1687                 }
1688
1689                 // One character big delimiters. The others are handled in
1690                 // interpretString().
1691                 latexkeys const * l = in_word_set(name.substr(1));
1692                 if (name[0] == '\\' && l && l->inset == "big") {
1693                         docstring delim;
1694                         switch (c) {
1695                         case '{':
1696                                 delim = from_ascii("\\{");
1697                                 break;
1698                         case '}':
1699                                 delim = from_ascii("\\}");
1700                                 break;
1701                         default:
1702                                 delim = docstring(1, c);
1703                                 break;
1704                         }
1705                         if (InsetMathBig::isBigInsetDelim(delim)) {
1706                                 // name + delim ared a valid InsetMathBig.
1707                                 // We can't use cur.macroModeClose() because
1708                                 // it does not handle delim.
1709                                 InsetMathUnknown * p = cur.activeMacro();
1710                                 p->finalize();
1711                                 --cur.pos();
1712                                 cur.cell().erase(cur.pos());
1713                                 cur.plainInsert(MathAtom(
1714                                         new InsetMathBig(name.substr(1), delim)));
1715                                 return true;
1716                         }
1717                 } else if (name == "\\smash" && c == '[') {
1718                         // We can't use cur.macroModeClose() because
1719                         // it would create an InsetMathPhantom
1720                         InsetMathUnknown * p = cur.activeMacro();
1721                         p->finalize();
1722                         interpretChar(cur, c);
1723                         return true;
1724                 }
1725
1726                 // leave macro mode and try again if necessary
1727                 if (cur.macroModeClose()) {
1728                         MathAtom const atom = cur.prevAtom();
1729                         if (atom->asNestInset() && atom->isActive()) {
1730                                 cur.posBackward();
1731                                 cur.pushBackward(*cur.nextInset());
1732                         }
1733                 }
1734                 if (c == '{')
1735                         cur.niceInsert(MathAtom(new InsetMathBrace(buf)));
1736                 else if (c != ' ')
1737                         interpretChar(cur, c);
1738                 return true;
1739         }
1740
1741
1742         // leave autocorrect mode if necessary
1743         if (lyxrc.autocorrection_math && c == ' ' && cur.autocorrect()) {
1744                 cur.autocorrect() = false;
1745                 cur.message(_("Autocorrect Off ('!' to enter)"));
1746                 return true;
1747         }
1748         if (lyxrc.autocorrection_math && c == '!' && !cur.autocorrect()) {
1749                 cur.autocorrect() = true;
1750                 cur.message(_("Autocorrect On (<space> to exit)"));
1751                 return true;
1752         }
1753
1754         // just clear selection on pressing the space bar
1755         if (cur.selection() && c == ' ') {
1756                 cur.setSelection(false);
1757                 return true;
1758         }
1759
1760         if (c == '\\') {
1761                 //lyxerr << "starting with macro" << endl;
1762                 bool reduced = cap::reduceSelectionToOneCell(cur);
1763                 if (reduced || !cur.selection()) {
1764                         cur.recordUndoInset();
1765                         docstring const safe = cap::grabAndEraseSelection(cur);
1766                         if (!cur.inRegexped())
1767                                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1768                         else
1769                                 cur.niceInsert(createInsetMath("backslash", buf));
1770                 }
1771                 return true;
1772         }
1773
1774         selClearOrDel(cur);
1775
1776         if (c == '\n') {
1777                 if (currentMode() <= InsetMath::TEXT_MODE)
1778                         cur.insert(c);
1779                 return true;
1780         }
1781
1782         if (c == ' ') {
1783                 if (currentMode() <= InsetMath::TEXT_MODE) {
1784                         // insert spaces in text or undecided mode,
1785                         // but suppress direct insertion of two spaces in a row
1786                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1787                         // it is better than nothing...
1788                         if (cur.pos() == 0 || cur.prevAtom()->getChar() != ' ') {
1789                                 cur.insert(c);
1790                                 // FIXME: we have to enable full redraw here because of the
1791                                 // visual box corners that define the inset. If we know for
1792                                 // sure that we stay within the same cell we can optimize for
1793                                 // that using:
1794                                 //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1795                         }
1796                         return true;
1797                 }
1798                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1799                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1800                         // FIXME: we have to enable full redraw here because of the
1801                         // visual box corners that define the inset. If we know for
1802                         // sure that we stay within the same cell we can optimize for
1803                         // that using:
1804                         //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1805                         return true;
1806                 }
1807
1808                 if (cur.popForward()) {
1809                         // FIXME: we have to enable full redraw here because of the
1810                         // visual box corners that define the inset. If we know for
1811                         // sure that we stay within the same cell we can optimize for
1812                         // that using:
1813                         //cur.screenUpdateFlags(Update::FitCursor);
1814                         return true;
1815                 }
1816
1817                 // if we are at the very end, leave the formula
1818                 return cur.pos() != cur.lastpos();
1819         }
1820
1821         // These should be treated differently when not in text mode:
1822         if (cur.inRegexped()) {
1823                 switch (c) {
1824                 case '^':
1825                         cur.niceInsert(createInsetMath("mathcircumflex", buf));
1826                         break;
1827                 case '{':
1828                 case '}':
1829                 case '#':
1830                 case '%':
1831                 case '_':
1832                         cur.niceInsert(createInsetMath(docstring(1, c), buf));
1833                         break;
1834                 case '~':
1835                         cur.niceInsert(createInsetMath("sim", buf));
1836                         break;
1837                 default:
1838                         cur.insert(c);
1839                 }
1840                 return true;
1841         } else if (currentMode() != InsetMath::TEXT_MODE) {
1842                 if (c == '_') {
1843                         script(cur, false, save_selection);
1844                         return true;
1845                 }
1846                 if (c == '^') {
1847                         script(cur, true, save_selection);
1848                         return true;
1849                 }
1850                 if (c == '~') {
1851                         cur.niceInsert(createInsetMath("sim", buf));
1852                         return true;
1853                 }
1854                 if (currentMode() == InsetMath::MATH_MODE && !isAsciiOrMathAlpha(c)) {
1855                         MathAtom at = createInsetMath("text", buf);
1856                         at.nucleus()->cell(0).push_back(MathAtom(new InsetMathChar(c)));
1857                         cur.niceInsert(at);
1858                         cur.posForward();
1859                         return true;
1860                 }
1861         } else {
1862                 if (c == '^') {
1863                         cur.niceInsert(createInsetMath("textasciicircum", buf));
1864                         return true;
1865                 }
1866                 if (c == '~') {
1867                         cur.niceInsert(createInsetMath("textasciitilde", buf));
1868                         return true;
1869                 }
1870         }
1871
1872         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1873             c == '%' || c == '_') {
1874                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1875                 return true;
1876         }
1877
1878
1879         // try auto-correction
1880         if (lyxrc.autocorrection_math && cur.autocorrect() && cur.pos() != 0
1881                   && math_autocorrect(cur.prevAtom(), c))
1882                 return true;
1883
1884         // no special circumstances, so insert the character without any fuss
1885         cur.insert(c);
1886         if (lyxrc.autocorrection_math) {
1887                 if (!cur.autocorrect())
1888                         cur.message(_("Autocorrect Off ('!' to enter)"));
1889                 else
1890                         cur.message(_("Autocorrect On (<space> to exit)"));
1891         }
1892         return true;
1893 }
1894
1895
1896 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1897 {
1898         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1899         // possible
1900         if (!cur.empty() && cur.pos() > 0 &&
1901             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1902                 if (InsetMathBig::isBigInsetDelim(str)) {
1903                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1904                         if (prev[0] == '\\') {
1905                                 prev = prev.substr(1);
1906                                 latexkeys const * l = in_word_set(prev);
1907                                 if (l && l->inset == "big") {
1908                                         cur.cell()[cur.pos() - 1] =
1909                                                 MathAtom(new InsetMathBig(prev, str));
1910                                         return true;
1911                                 }
1912                         }
1913                 }
1914         }
1915         return false;
1916 }
1917
1918
1919 bool InsetMathNest::script(Cursor & cur, bool up)
1920 {
1921         return script(cur, up, docstring());
1922 }
1923
1924
1925 bool InsetMathNest::script(Cursor & cur, bool up,
1926                 docstring const & save_selection)
1927 {
1928         // Hack to get \^ and \_ working
1929         //lyxerr << "handling script: up: " << up << endl;
1930         if (cur.inMacroMode() && cur.macroName() == "\\") {
1931                 if (up)
1932                         cur.niceInsert(createInsetMath("mathcircumflex", cur.buffer()));
1933                 else
1934                         interpretChar(cur, '_');
1935                 return true;
1936         }
1937
1938         cur.macroModeClose();
1939         if (asScriptInset() && cur.idx() == 0) {
1940                 // we are in a nucleus of a script inset, move to _our_ script
1941                 InsetMathScript * inset = asScriptInset();
1942                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1943                 inset->ensure(up);
1944                 cur.idx() = inset->idxOfScript(up);
1945                 cur.pos() = 0;
1946         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1947                 --cur.pos();
1948                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1949                 cur.push(*inset);
1950                 inset->ensure(up);
1951                 cur.idx() = inset->idxOfScript(up);
1952                 cur.pos() = cur.lastpos();
1953         } else {
1954                 // convert the thing to our left to a scriptinset or create a new
1955                 // one if in the very first position of the array
1956                 if (cur.pos() == 0) {
1957                         //lyxerr << "new scriptinset" << endl;
1958                         cur.insert(new InsetMathScript(buffer_, up));
1959                 } else {
1960                         //lyxerr << "converting prev atom " << endl;
1961                         cur.prevAtom() = MathAtom(new InsetMathScript(buffer_, cur.prevAtom(), up));
1962                 }
1963                 --cur.pos();
1964                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1965                 // See comment in MathParser.cpp for special handling of {}-bases
1966
1967                 cur.push(*inset);
1968                 cur.idx() = 1;
1969                 cur.pos() = 0;
1970         }
1971         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1972         cur.niceInsert(save_selection);
1973         cur.resetAnchor();
1974         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1975         return true;
1976 }
1977
1978
1979 bool InsetMathNest::completionSupported(Cursor const & cur) const
1980 {
1981         return cur.inMacroMode();
1982 }
1983
1984
1985 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
1986 {
1987         return cur.inMacroMode();
1988 }
1989
1990
1991 bool InsetMathNest::automaticInlineCompletion() const
1992 {
1993         return lyxrc.completion_inline_math;
1994 }
1995
1996
1997 bool InsetMathNest::automaticPopupCompletion() const
1998 {
1999         return lyxrc.completion_popup_math;
2000 }
2001
2002
2003 CompletionList const *
2004 InsetMathNest::createCompletionList(Cursor const & cur) const
2005 {
2006         if (!cur.inMacroMode())
2007                 return 0;
2008
2009         return new MathCompletionList(cur);
2010 }
2011
2012
2013 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
2014 {
2015         if (!cur.inMacroMode())
2016                 return docstring();
2017
2018         return cur.activeMacro()->name();
2019 }
2020
2021
2022 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
2023                                      bool finished)
2024 {
2025         if (!cur.inMacroMode())
2026                 return false;
2027
2028         // append completion to active macro
2029         InsetMathUnknown * inset = cur.activeMacro();
2030         inset->setName(inset->name() + s);
2031
2032         // finish macro
2033         if (finished) {
2034 #if 0
2035                 // FIXME: this creates duplicates in the completion popup
2036                 // which looks ugly. Moreover the changes the list lengths
2037                 // which seems to
2038                 confuse the popup as well.
2039                 MathCompletionList::addToFavorites(inset->name());
2040 #endif
2041                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
2042         }
2043
2044         return true;
2045 }
2046
2047
2048 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
2049                                         Dimension & dim) const
2050 {
2051         Inset const * inset = cur.activeMacro();
2052         if (!inset)
2053                 return;
2054
2055         // get inset dimensions
2056         dim = cur.bv().coordCache().insets().dim(inset);
2057         // FIXME: these 3 are no accurate, but should depend on the font.
2058         // Now the popup jumps down if you enter a char with descent > 0.
2059         dim.des += 3;
2060         dim.asc += 3;
2061
2062         // and position
2063         Point xy = cur.bv().coordCache().insets().xy(inset);
2064         x = xy.x_;
2065         y = xy.y_;
2066 }
2067
2068
2069 bool InsetMathNest::cursorMathForward(Cursor & cur)
2070 {
2071         if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
2072                 cur.pushBackward(*cur.nextAtom().nucleus());
2073                 cur.inset().idxFirst(cur);
2074                 return true;
2075         }
2076         if (cur.posForward() || idxForward(cur))
2077                 return true;
2078         // try to pop forwards --- but don't pop out of math! leave that to
2079         // the FINISH lfuns
2080         int s = cur.depth() - 2;
2081         if (s >= 0 && cur[s].inset().asInsetMath())
2082                 return cur.popForward();
2083         return false;
2084 }
2085
2086
2087 bool InsetMathNest::cursorMathBackward(Cursor & cur)
2088 {
2089         if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
2090                 cur.posBackward();
2091                 cur.push(*cur.nextAtom().nucleus());
2092                 cur.inset().idxLast(cur);
2093                 return true;
2094         }
2095         if (cur.posBackward() || idxBackward(cur))
2096                 return true;
2097         // try to pop backwards --- but don't pop out of math! leave that to
2098         // the FINISH lfuns
2099         int s = cur.depth() - 2;
2100         if (s >= 0 && cur[s].inset().asInsetMath())
2101                 return cur.popBackward();
2102         return false;
2103 }
2104
2105
2106 ////////////////////////////////////////////////////////////////////
2107
2108 MathCompletionList::MathCompletionList(Cursor const & cur)
2109 {
2110         // fill it with macros from the buffer
2111         MacroNameSet macros;
2112         cur.buffer()->listMacroNames(macros);
2113         MacroNameSet::const_iterator it;
2114         for (it = macros.begin(); it != macros.end(); ++it) {
2115                 if (cur.buffer()->getMacro(*it, cur, false))
2116                         locals.push_back("\\" + *it);
2117         }
2118         sort(locals.begin(), locals.end());
2119
2120         if (!globals.empty())
2121                 return;
2122
2123         // fill in global macros
2124         macros.clear();
2125         MacroTable::globalMacros().getMacroNames(macros, false);
2126         //lyxerr << "Globals completion macros: ";
2127         for (it = macros.begin(); it != macros.end(); ++it) {
2128                 //lyxerr << "\\" + *it << " ";
2129                 globals.push_back("\\" + *it);
2130         }
2131         //lyxerr << std::endl;
2132
2133         // fill in global commands
2134         globals.push_back(from_ascii("\\boxed"));
2135         globals.push_back(from_ascii("\\fbox"));
2136         globals.push_back(from_ascii("\\framebox"));
2137         globals.push_back(from_ascii("\\makebox"));
2138         globals.push_back(from_ascii("\\kern"));
2139         globals.push_back(from_ascii("\\xhookrightarrow"));
2140         globals.push_back(from_ascii("\\xhookleftarrow"));
2141         globals.push_back(from_ascii("\\xrightarrow"));
2142         globals.push_back(from_ascii("\\xRightarrow"));
2143         globals.push_back(from_ascii("\\xrightharpoondown"));
2144         globals.push_back(from_ascii("\\xrightharpoonup"));
2145         globals.push_back(from_ascii("\\xrightleftharpoons"));
2146         globals.push_back(from_ascii("\\xleftarrow"));
2147         globals.push_back(from_ascii("\\xLeftarrow"));
2148         globals.push_back(from_ascii("\\xleftharpoondown"));
2149         globals.push_back(from_ascii("\\xleftharpoonup"));
2150         globals.push_back(from_ascii("\\xleftrightarrow"));
2151         globals.push_back(from_ascii("\\xLeftrightarrow"));
2152         globals.push_back(from_ascii("\\xleftrightharpoons"));
2153         globals.push_back(from_ascii("\\xmapsto"));
2154         globals.push_back(from_ascii("\\split"));
2155         globals.push_back(from_ascii("\\gathered"));
2156         globals.push_back(from_ascii("\\aligned"));
2157         globals.push_back(from_ascii("\\alignedat"));
2158         globals.push_back(from_ascii("\\cases"));
2159         globals.push_back(from_ascii("\\substack"));
2160         globals.push_back(from_ascii("\\xymatrix"));
2161         globals.push_back(from_ascii("\\Diagram"));
2162         globals.push_back(from_ascii("\\subarray"));
2163         globals.push_back(from_ascii("\\array"));
2164         globals.push_back(from_ascii("\\sqrt"));
2165         globals.push_back(from_ascii("\\root"));
2166         globals.push_back(from_ascii("\\tabular"));
2167         globals.push_back(from_ascii("\\stackrel"));
2168         globals.push_back(from_ascii("\\stackrelthree"));
2169         globals.push_back(from_ascii("\\binom"));
2170         globals.push_back(from_ascii("\\choose"));
2171         globals.push_back(from_ascii("\\brace"));
2172         globals.push_back(from_ascii("\\brack"));
2173         globals.push_back(from_ascii("\\frac"));
2174         globals.push_back(from_ascii("\\over"));
2175         globals.push_back(from_ascii("\\nicefrac"));
2176         globals.push_back(from_ascii("\\unitfrac"));
2177         globals.push_back(from_ascii("\\unitfracthree"));
2178         globals.push_back(from_ascii("\\unitone"));
2179         globals.push_back(from_ascii("\\unittwo"));
2180         globals.push_back(from_ascii("\\infer"));
2181         globals.push_back(from_ascii("\\atop"));
2182         globals.push_back(from_ascii("\\lefteqn"));
2183         globals.push_back(from_ascii("\\boldsymbol"));
2184         globals.push_back(from_ascii("\\bm"));
2185         globals.push_back(from_ascii("\\color"));
2186         globals.push_back(from_ascii("\\normalcolor"));
2187         globals.push_back(from_ascii("\\textcolor"));
2188         globals.push_back(from_ascii("\\cfrac"));
2189         globals.push_back(from_ascii("\\cfracleft"));
2190         globals.push_back(from_ascii("\\cfracright"));
2191         globals.push_back(from_ascii("\\dfrac"));
2192         globals.push_back(from_ascii("\\tfrac"));
2193         globals.push_back(from_ascii("\\dbinom"));
2194         globals.push_back(from_ascii("\\tbinom"));
2195         globals.push_back(from_ascii("\\hphantom"));
2196         globals.push_back(from_ascii("\\phantom"));
2197         globals.push_back(from_ascii("\\vphantom"));
2198         globals.push_back(from_ascii("\\cancel"));
2199         globals.push_back(from_ascii("\\bcancel"));
2200         globals.push_back(from_ascii("\\xcancel"));
2201         globals.push_back(from_ascii("\\cancelto"));
2202         globals.push_back(from_ascii("\\smash"));
2203         globals.push_back(from_ascii("\\mathclap"));
2204         globals.push_back(from_ascii("\\mathllap"));
2205         globals.push_back(from_ascii("\\mathrlap"));
2206         globals.push_back(from_ascii("\\ensuremath"));
2207         MathWordList const & words = mathedWordList();
2208         MathWordList::const_iterator it2;
2209         //lyxerr << "Globals completion commands: ";
2210         for (it2 = words.begin(); it2 != words.end(); ++it2) {
2211                 if (it2->second.inset != "macro" && !it2->second.hidden) {
2212                         // macros are already read from MacroTable::globalMacros()
2213                         globals.push_back('\\' + it2->first);
2214                         //lyxerr << '\\' + it2->first << ' ';
2215                 }
2216         }
2217         //lyxerr << std::endl;
2218         sort(globals.begin(), globals.end());
2219 }
2220
2221
2222 MathCompletionList::~MathCompletionList()
2223 {
2224 }
2225
2226
2227 size_type MathCompletionList::size() const
2228 {
2229         return locals.size() + globals.size();
2230 }
2231
2232
2233 docstring const & MathCompletionList::data(size_t idx) const
2234 {
2235         size_t lsize = locals.size();
2236         if (idx >= lsize)
2237                 return globals[idx - lsize];
2238         else
2239                 return locals[idx];
2240 }
2241
2242
2243 std::string MathCompletionList::icon(size_t idx) const
2244 {
2245         // get the latex command
2246         docstring cmd;
2247         size_t lsize = locals.size();
2248         if (idx >= lsize)
2249                 cmd = globals[idx - lsize];
2250         else
2251                 cmd = locals[idx];
2252
2253         // get the icon resource name by stripping the backslash
2254         docstring icon_name = frontend::Application::mathIcon(cmd.substr(1));
2255         if (icon_name.empty())
2256                 return std::string();
2257         return "images/math/" + to_utf8(icon_name);
2258 }
2259
2260 std::vector<docstring> MathCompletionList::globals;
2261
2262 } // namespace lyx