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