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 //#define AUTOCORRECT
  14
  15 #include "InsetMathNest.h"
  16
  17 #include "InsetMathArray.h"
  18 #include "InsetMathBig.h"
  19 #include "InsetMathBox.h"
  20 #include "InsetMathBrace.h"
  21 #include "InsetMathColor.h"
  22 #include "InsetMathComment.h"
  23 #include "InsetMathDelim.h"
  24 #include "InsetMathHull.h"
  25 #include "InsetMathRef.h"
  26 #include "InsetMathScript.h"
  27 #include "InsetMathSpace.h"
  28 #include "InsetMathSymbol.h"
  29 #include "InsetMathUnknown.h"
  30 #ifdef AUTOCORRECT
  31 #include "MathAutoCorrect.h"
  32 #endif
  33 #include "MathCompletionList.h"
  34 #include "MathData.h"
  35 #include "MathFactory.h"
  36 #include "MathMacro.h"
  37 #include "MathMacroArgument.h"
  38 #include "MathParser.h"
  39 #include "MathStream.h"
  40 #include "MathSupport.h"
  41
  42 #include "Bidi.h"
  43 #include "Buffer.h"
  44 #include "BufferView.h"
  45 #include "CoordCache.h"
  46 #include "Cursor.h"
  47 #include "CutAndPaste.h"
  48 #include "DispatchResult.h"
  49 #include "FuncRequest.h"
  50 #include "FuncStatus.h"
  51 #include "LyXFunc.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(idx_type nargs)
  83         : cells_(nargs), lock_(false), mouse_hover_(false)
  84 {}
  85
  86
  87 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  88         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_),
  89           mouse_hover_(false)
  90 {}
  91
  92
  93 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
  94 {
  95         cells_ = inset.cells_;
  96         lock_ = inset.lock_;
  97         mouse_hover_ = false;
  98         InsetMath::operator=(inset);
  99         return *this;
 100 }
 101
 102
 103 InsetMath::idx_type InsetMathNest::nargs() const
 104 {
 105         return cells_.size();
 106 }
 107
 108
 109 void InsetMathNest::cursorPos(BufferView const & bv,
 110                 CursorSlice const & sl, bool /*boundary*/,
 111                 int & x, int & y) const
 112 {
 113 // FIXME: This is a hack. Ideally, the coord cache should not store
 114 // absolute positions, but relative ones. This would mean to call
 115 // setXY() not in MathData::draw(), but in the parent insets' draw()
 116 // with the correctly adjusted x,y values. But this means that we'd have
 117 // to touch all (math)inset's draw() methods. Right now, we'll store
 118 // absolute value, and make them here relative, only to make them
 119 // absolute again when actually drawing the cursor. What a mess.
 120         LASSERT(&sl.inset() == this, /**/);
 121         MathData const & ar = sl.cell();
 122         CoordCache const & coord_cache = bv.coordCache();
 123         if (!coord_cache.getArrays().has(&ar)) {
 124                 // this can (semi-)legally happen if we just created this cell
 125                 // and it never has been drawn before. So don't ASSERT.
 126                 //lyxerr << "no cached data for array " << &ar << endl;
 127                 x = 0;
 128                 y = 0;
 129                 return;
 130         }
 131         Point const pt = coord_cache.getArrays().xy(&ar);
 132         if (!coord_cache.getInsets().has(this)) {
 133                 // same as above
 134                 //lyxerr << "no cached data for inset " << this << endl;
 135                 x = 0;
 136                 y = 0;
 137                 return;
 138         }
 139         Point const pt2 = coord_cache.getInsets().xy(this);
 140         //lyxerr << "retrieving position cache for MathData "
 141         //      << pt.x_ << ' ' << pt.y_ << endl;
 142         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 143         y = pt.y_ - pt2.y_;
 144 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 145 //              << " asc: " << ascent() << "  des: " << descent()
 146 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 147         // move cursor visually into empty cells ("blue rectangles");
 148         if (ar.empty())
 149                 x += 2;
 150 }
 151
 152
 153 void InsetMathNest::metrics(MetricsInfo const & mi) const
 154 {
 155         MetricsInfo m = mi;
 156         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 157                 Dimension dim;
 158                 cell(i).metrics(m, dim);
 159         }
 160 }
 161
 162
 163 bool InsetMathNest::idxNext(Cursor & cur) const
 164 {
 165         LASSERT(&cur.inset() == this, /**/);
 166         if (cur.idx() == cur.lastidx())
 167                 return false;
 168         ++cur.idx();
 169         cur.pos() = 0;
 170         return true;
 171 }
 172
 173
 174 bool InsetMathNest::idxForward(Cursor & cur) const
 175 {
 176         return idxNext(cur);
 177 }
 178
 179
 180 bool InsetMathNest::idxPrev(Cursor & cur) const
 181 {
 182         LASSERT(&cur.inset() == this, /**/);
 183         if (cur.idx() == 0)
 184                 return false;
 185         --cur.idx();
 186         cur.pos() = cur.lastpos();
 187         return true;
 188 }
 189
 190
 191 bool InsetMathNest::idxBackward(Cursor & cur) const
 192 {
 193         return idxPrev(cur);
 194 }
 195
 196
 197 bool InsetMathNest::idxFirst(Cursor & cur) const
 198 {
 199         LASSERT(&cur.inset() == this, /**/);
 200         if (nargs() == 0)
 201                 return false;
 202         cur.idx() = 0;
 203         cur.pos() = 0;
 204         return true;
 205 }
 206
 207
 208 bool InsetMathNest::idxLast(Cursor & cur) const
 209 {
 210         LASSERT(&cur.inset() == this, /**/);
 211         if (nargs() == 0)
 212                 return false;
 213         cur.idx() = cur.lastidx();
 214         cur.pos() = cur.lastpos();
 215         return true;
 216 }
 217
 218
 219 void InsetMathNest::dump() const
 220 {
 221         odocstringstream oss;
 222         WriteStream os(oss);
 223         os << "---------------------------------------------\n";
 224         write(os);
 225         os << "\n";
 226         for (idx_type i = 0, n = nargs(); i != n; ++i)
 227                 os << cell(i) << "\n";
 228         os << "---------------------------------------------\n";
 229         lyxerr << to_utf8(oss.str());
 230 }
 231
 232
 233 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 234 {
 235 #if 0
 236         if (lock_)
 237                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 238                                         Color_mathlockbg);
 239 #endif
 240         setPosCache(pi, x, y);
 241 }
 242
 243
 244 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 245 {
 246         BufferView & bv = *pi.base.bv;
 247         // this should use the x/y values given, not the cached values
 248         Cursor & cur = bv.cursor();
 249         if (!cur.selection())
 250                 return;
 251         if (&cur.inset() != this)
 252                 return;
 253
 254         // FIXME: hack to get position cache warm
 255         bool const original_drawing_state = pi.pain.isDrawingEnabled();
 256         pi.pain.setDrawingEnabled(false);
 257         draw(pi, x, y);
 258         pi.pain.setDrawingEnabled(original_drawing_state);
 259
 260         CursorSlice s1 = cur.selBegin();
 261         CursorSlice s2 = cur.selEnd();
 262
 263         //lyxerr << "InsetMathNest::drawing selection: "
 264         //      << " s1: " << s1 << " s2: " << s2 << endl;
 265         if (s1.idx() == s2.idx()) {
 266                 MathData const & c = cell(s1.idx());
 267                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 268                 int x1 = g.pos.x_ + c.pos2x(pi.base.bv, s1.pos());
 269                 int y1 = g.pos.y_ - g.dim.ascent();
 270                 int x2 = g.pos.x_ + c.pos2x(pi.base.bv, s2.pos());
 271                 int y2 = g.pos.y_ + g.dim.descent();
 272                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 273         //lyxerr << "InsetMathNest::drawing selection 3: "
 274         //      << " x1: " << x1 << " x2: " << x2
 275         //      << " y1: " << y1 << " y2: " << y2 << endl;
 276         } else {
 277                 for (idx_type i = 0; i < nargs(); ++i) {
 278                         if (idxBetween(i, s1.idx(), s2.idx())) {
 279                                 MathData const & c = cell(i);
 280                                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 281                                 int x1 = g.pos.x_;
 282                                 int y1 = g.pos.y_ - g.dim.ascent();
 283                                 int x2 = g.pos.x_ + g.dim.width();
 284                                 int y2 = g.pos.y_ + g.dim.descent();
 285                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 286                         }
 287                 }
 288         }
 289 }
 290
 291
 292 void InsetMathNest::validate(LaTeXFeatures & features) const
 293 {
 294         for (idx_type i = 0; i < nargs(); ++i)
 295                 cell(i).validate(features);
 296 }
 297
 298
 299 void InsetMathNest::replace(ReplaceData & rep)
 300 {
 301         for (idx_type i = 0; i < nargs(); ++i)
 302                 cell(i).replace(rep);
 303 }
 304
 305
 306 bool InsetMathNest::contains(MathData const & ar) const
 307 {
 308         for (idx_type i = 0; i < nargs(); ++i)
 309                 if (cell(i).contains(ar))
 310                         return true;
 311         return false;
 312 }
 313
 314
 315 bool InsetMathNest::lock() const
 316 {
 317         return lock_;
 318 }
 319
 320
 321 void InsetMathNest::lock(bool l)
 322 {
 323         lock_ = l;
 324 }
 325
 326
 327 bool InsetMathNest::isActive() const
 328 {
 329         return nargs() > 0;
 330 }
 331
 332
 333 MathData InsetMathNest::glue() const
 334 {
 335         MathData ar;
 336         for (size_t i = 0; i < nargs(); ++i)
 337                 ar.append(cell(i));
 338         return ar;
 339 }
 340
 341
 342 void InsetMathNest::write(WriteStream & os) const
 343 {
 344         ModeSpecifier specifier(os, currentMode());
 345         docstring const latex_name = name();
 346         os << '\\' << latex_name;
 347         for (size_t i = 0; i < nargs(); ++i)
 348                 os << '{' << cell(i) << '}';
 349         if (nargs() == 0)
 350                 os.pendingSpace(true);
 351         if (lock_ && !os.latex()) {
 352                 os << "\\lyxlock";
 353                 os.pendingSpace(true);
 354         }
 355 }
 356
 357
 358 void InsetMathNest::normalize(NormalStream & os) const
 359 {
 360         os << '[' << name();
 361         for (size_t i = 0; i < nargs(); ++i)
 362                 os << ' ' << cell(i);
 363         os << ']';
 364 }
 365
 366
 367 int InsetMathNest::latex(odocstream & os, OutputParams const & runparams) const
 368 {
 369         WriteStream wi(os, runparams.moving_arg, true, runparams.dryrun,
 370                         runparams.encoding);
 371         write(wi);
 372         return wi.line();
 373 }
 374
 375
 376 bool InsetMathNest::setMouseHover(bool mouse_hover)
 377 {
 378         mouse_hover_ = mouse_hover;
 379         return true;
 380 }
 381
 382
 383 bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
 384 {
 385         // FIXME: look here
 386 #if 0
 387         MathData & ar = cur.cell();
 388         // remove base-only "scripts"
 389         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 390                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 391                 if (p && p->nargs() == 1) {
 392                         MathData ar = p->nuc();
 393                         erase(i);
 394                         insert(i, ar);
 395                         cur.adjust(i, ar.size() - 1);
 396                 }
 397         }
 398
 399         // glue adjacent font insets of the same kind
 400         for (pos_type i = 0; i + 1 < size(); ++i) {
 401                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 402                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 403                 if (p && q && p->name() == q->name()) {
 404                         p->cell(0).append(q->cell(0));
 405                         erase(i + 1);
 406                         cur.adjust(i, -1);
 407                 }
 408         }
 409 #endif
 410         return false;
 411 }
 412
 413
 414 void InsetMathNest::handleFont
 415         (Cursor & cur, docstring const & arg, char const * const font)
 416 {
 417         handleFont(cur, arg, from_ascii(font));
 418 }
 419
 420
 421 void InsetMathNest::handleFont(Cursor & cur, docstring const & arg,
 422         docstring const & font)
 423 {
 424         cur.recordUndoSelection();
 425
 426         // this whole function is a hack and won't work for incremental font
 427         // changes...
 428         if (cur.inset().asInsetMath()->name() == font)
 429                 cur.handleFont(to_utf8(font));
 430         else
 431                 handleNest(cur, createInsetMath(font), arg);
 432 }
 433
 434
 435 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest)
 436 {
 437         handleNest(cur, nest, docstring());
 438 }
 439
 440
 441 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest,
 442         docstring const & arg)
 443 {
 444         CursorSlice i1 = cur.selBegin();
 445         CursorSlice i2 = cur.selEnd();
 446         if (!i1.inset().asInsetMath())
 447                 return;
 448         if (i1.idx() == i2.idx()) {
 449                 // the easy case where only one cell is selected
 450                 cur.handleNest(nest);
 451                 cur.insert(arg);
 452                 return;
 453         }
 454
 455         // multiple selected cells in a simple non-grid inset
 456         if (i1.asInsetMath()->nrows() == 0 || i1.asInsetMath()->ncols() == 0) {
 457                 for (idx_type i = i1.idx(); i <= i2.idx(); ++i) {
 458                         // select cell
 459                         cur.idx() = i;
 460                         cur.pos() = 0;
 461                         cur.resetAnchor();
 462                         cur.pos() = cur.lastpos();
 463                         cur.setSelection();
 464
 465                         // change font of cell
 466                         cur.handleNest(nest);
 467                         cur.insert(arg);
 468
 469                         // cur is in the font inset now. If the loop continues,
 470                         // we need to get outside again for the next cell
 471                         if (i + 1 <= i2.idx())
 472                                 cur.pop_back();
 473                 }
 474                 return;
 475         }
 476
 477         // the complicated case with multiple selected cells in a grid
 478         row_type r1, r2;
 479         col_type c1, c2;
 480         cap::region(i1, i2, r1, r2, c1, c2);
 481         for (row_type row = r1; row <= r2; ++row) {
 482                 for (col_type col = c1; col <= c2; ++col) {
 483                         // select cell
 484                         cur.idx() = i1.asInsetMath()->index(row, col);
 485                         cur.pos() = 0;
 486                         cur.resetAnchor();
 487                         cur.pos() = cur.lastpos();
 488                         cur.setSelection();
 489
 490                         //
 491                         cur.handleNest(nest);
 492                         cur.insert(arg);
 493
 494                         // cur is in the font inset now. If the loop continues,
 495                         // we need to get outside again for the next cell
 496                         if (col + 1 <= c2 || row + 1 <= r2)
 497                                 cur.pop_back();
 498                 }
 499         }
 500 }
 501
 502
 503 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 504 {
 505         cur.recordUndoSelection();
 506         Font font;
 507         bool b;
 508         font.fromString(to_utf8(arg), b);
 509         if (font.fontInfo().color() != Color_inherit &&
 510             font.fontInfo().color() != Color_ignore)
 511                 handleNest(cur, MathAtom(new InsetMathColor(true, font.fontInfo().color())));
 512
 513         // FIXME: support other font changes here as well?
 514 }
 515
 516
 517 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 518 {
 519         //lyxerr << "InsetMathNest: request: " << cmd << endl;
 520
 521         Parse::flags parseflg = Parse::QUIET;
 522
 523         switch (cmd.action) {
 524
 525         case LFUN_CLIPBOARD_PASTE:
 526                 parseflg |= Parse::VERBATIM;
 527                 // fall through
 528         case LFUN_PASTE: {
 529                 if (cur.currentMode() == TEXT_MODE)
 530                         parseflg |= Parse::TEXTMODE;
 531                 cur.recordUndoSelection();
 532                 cur.message(_("Paste"));
 533                 replaceSelection(cur);
 534                 docstring topaste;
 535                 if (cmd.argument().empty() && !theClipboard().isInternal())
 536                         topaste = theClipboard().getAsText();
 537                 else {
 538                         size_t n = 0;
 539                         idocstringstream is(cmd.argument());
 540                         is >> n;
 541                         topaste = cap::selection(n);
 542                 }
 543                 cur.niceInsert(topaste, parseflg);
 544                 cur.clearSelection(); // bug 393
 545                 cur.finishUndo();
 546                 break;
 547         }
 548
 549         case LFUN_CUT:
 550                 cur.recordUndo();
 551                 cutSelection(cur, true, true);
 552                 cur.message(_("Cut"));
 553                 // Prevent stale position >= size crash
 554                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 555                 cur.normalize();
 556                 break;
 557
 558         case LFUN_COPY:
 559                 copySelection(cur);
 560                 cur.message(_("Copy"));
 561                 break;
 562
 563         case LFUN_MOUSE_PRESS:
 564                 lfunMousePress(cur, cmd);
 565                 break;
 566
 567         case LFUN_MOUSE_MOTION:
 568                 lfunMouseMotion(cur, cmd);
 569                 break;
 570
 571         case LFUN_MOUSE_RELEASE:
 572                 lfunMouseRelease(cur, cmd);
 573                 break;
 574
 575         case LFUN_FINISHED_LEFT: // in math, left is backwards
 576         case LFUN_FINISHED_BACKWARD:
 577                 cur.bv().cursor() = cur;
 578                 break;
 579
 580         case LFUN_FINISHED_RIGHT: // in math, right is forward
 581         case LFUN_FINISHED_FORWARD:
 582                 ++cur.pos();
 583                 cur.bv().cursor() = cur;
 584                 break;
 585
 586         case LFUN_CHAR_RIGHT:
 587         case LFUN_CHAR_LEFT:
 588         case LFUN_CHAR_BACKWARD:
 589         case LFUN_CHAR_FORWARD:
 590                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 591         case LFUN_CHAR_RIGHT_SELECT:
 592         case LFUN_CHAR_LEFT_SELECT:
 593         case LFUN_CHAR_BACKWARD_SELECT:
 594         case LFUN_CHAR_FORWARD_SELECT: {
 595                 // are we in a selection?
 596                 bool select = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 597                                            || cmd.action == LFUN_CHAR_LEFT_SELECT
 598                                            || cmd.action == LFUN_CHAR_BACKWARD_SELECT
 599                                            || cmd.action == LFUN_CHAR_FORWARD_SELECT);
 600                 // are we moving forward or backwards?
 601                 // If the command was RIGHT or LEFT, then whether we're moving forward
 602                 // or backwards depends on the cursor movement mode (logical or visual):
 603                 //  * in visual mode, since math is always LTR, right -> forward,
 604                 //    left -> backwards
 605                 //  * in logical mode, the mapping is determined by the
 606                 //    reverseDirectionNeeded() function
 607
 608                 bool forward;
 609                 FuncCode finish_lfun;
 610
 611                 if (cmd.action == LFUN_CHAR_FORWARD
 612                                 || cmd.action == LFUN_CHAR_FORWARD_SELECT) {
 613                         forward = true;
 614                         finish_lfun = LFUN_FINISHED_FORWARD;
 615                 }
 616                 else if (cmd.action == LFUN_CHAR_BACKWARD
 617                                 || cmd.action == LFUN_CHAR_BACKWARD_SELECT) {
 618                         forward = false;
 619                         finish_lfun = LFUN_FINISHED_BACKWARD;
 620                 }
 621                 else {
 622                         bool right = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 623                                                   || cmd.action == LFUN_CHAR_RIGHT);
 624                         if (lyxrc.visual_cursor || !reverseDirectionNeeded(cur))
 625                                 forward = right;
 626                         else
 627                                 forward = !right;
 628
 629                         if (right)
 630                                 finish_lfun = LFUN_FINISHED_RIGHT;
 631                         else
 632                                 finish_lfun = LFUN_FINISHED_LEFT;
 633                 }
 634                 // Now that we know exactly what we want to do, let's do it!
 635                 cur.selHandle(select);
 636                 cur.autocorrect() = false;
 637                 cur.clearTargetX();
 638                 cur.macroModeClose();
 639                 // try moving forward or backwards as necessary...
 640                 if (!(forward ? cursorMathForward(cur) : cursorMathBackward(cur))) {
 641                         // ... and if movement failed, then finish forward or backwards
 642                         // as necessary
 643                         cmd = FuncRequest(finish_lfun);
 644                         cur.undispatched();
 645                 }
 646                 break;
 647         }
 648
 649         case LFUN_DOWN:
 650         case LFUN_UP:
 651                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 652         case LFUN_DOWN_SELECT:
 653         case LFUN_UP_SELECT: {
 654                 // close active macro
 655                 if (cur.inMacroMode()) {
 656                         cur.macroModeClose();
 657                         break;
 658                 }
 659
 660                 // stop/start the selection
 661                 bool select = cmd.action == LFUN_DOWN_SELECT ||
 662                         cmd.action == LFUN_UP_SELECT;
 663                 cur.selHandle(select);
 664
 665                 // go up/down
 666                 bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
 667                 bool successful = cur.upDownInMath(up);
 668                 if (successful)
 669                         break;
 670
 671                 if (cur.fixIfBroken())
 672                         // FIXME: Something bad happened. We pass the corrected Cursor
 673                         // instead of letting things go worse.
 674                         break;
 675
 676                 // We did not manage to move the cursor.
 677                 cur.undispatched();
 678                 break;
 679         }
 680
 681         case LFUN_MOUSE_DOUBLE:
 682         case LFUN_MOUSE_TRIPLE:
 683         case LFUN_WORD_SELECT:
 684                 cur.pos() = 0;
 685                 cur.idx() = 0;
 686                 cur.resetAnchor();
 687                 cur.setSelection(true);
 688                 cur.pos() = cur.lastpos();
 689                 cur.idx() = cur.lastidx();
 690                 break;
 691
 692         case LFUN_PARAGRAPH_UP:
 693         case LFUN_PARAGRAPH_DOWN:
 694                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 695         case LFUN_PARAGRAPH_UP_SELECT:
 696         case LFUN_PARAGRAPH_DOWN_SELECT:
 697                 break;
 698
 699         case LFUN_LINE_BEGIN:
 700         case LFUN_WORD_BACKWARD:
 701         case LFUN_WORD_LEFT:
 702                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 703         case LFUN_LINE_BEGIN_SELECT:
 704         case LFUN_WORD_BACKWARD_SELECT:
 705         case LFUN_WORD_LEFT_SELECT:
 706                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 707                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
 708                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 709                 cur.macroModeClose();
 710                 if (cur.pos() != 0) {
 711                         cur.pos() = 0;
 712                 } else if (cur.col() != 0) {
 713                         cur.idx() -= cur.col();
 714                         cur.pos() = 0;
 715                 } else if (cur.idx() != 0) {
 716                         cur.idx() = 0;
 717                         cur.pos() = 0;
 718                 } else {
 719                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 720                         cur.undispatched();
 721                 }
 722                 break;
 723
 724         case LFUN_WORD_FORWARD:
 725         case LFUN_WORD_RIGHT:
 726         case LFUN_LINE_END:
 727                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 728         case LFUN_WORD_FORWARD_SELECT:
 729         case LFUN_WORD_RIGHT_SELECT:
 730         case LFUN_LINE_END_SELECT:
 731                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 732                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
 733                                 cmd.action == LFUN_LINE_END_SELECT);
 734                 cur.macroModeClose();
 735                 cur.clearTargetX();
 736                 if (cur.pos() != cur.lastpos()) {
 737                         cur.pos() = cur.lastpos();
 738                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 739                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 740                         cur.pos() = cur.lastpos();
 741                 } else if (cur.idx() != cur.lastidx()) {
 742                         cur.idx() = cur.lastidx();
 743                         cur.pos() = cur.lastpos();
 744                 } else {
 745                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 746                         cur.undispatched();
 747                 }
 748                 break;
 749
 750         case LFUN_CELL_FORWARD:
 751                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 752                 cur.inset().idxNext(cur);
 753                 break;
 754
 755         case LFUN_CELL_BACKWARD:
 756                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 757                 cur.inset().idxPrev(cur);
 758                 break;
 759
 760         case LFUN_WORD_DELETE_BACKWARD:
 761         case LFUN_CHAR_DELETE_BACKWARD:
 762                 if (cur.pos() == 0)
 763                         // May affect external cell:
 764                         cur.recordUndoInset();
 765                 else
 766                         cur.recordUndoSelection();
 767                 // if the inset can not be removed from within, delete it
 768                 if (!cur.backspace()) {
 769                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 770                         cur.innerText()->dispatch(cur, cmd);
 771                 }
 772                 break;
 773
 774         case LFUN_WORD_DELETE_FORWARD:
 775         case LFUN_CHAR_DELETE_FORWARD:
 776                 if (cur.pos() == cur.lastpos())
 777                         // May affect external cell:
 778                         cur.recordUndoInset();
 779                 else
 780                         cur.recordUndoSelection();
 781                 // if the inset can not be removed from within, delete it
 782                 if (!cur.erase()) {
 783                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 784                         cur.innerText()->dispatch(cur, cmd);
 785                 }
 786                 break;
 787
 788         case LFUN_ESCAPE:
 789                 if (cur.selection())
 790                         cur.clearSelection();
 791                 else  {
 792                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 793                         cur.undispatched();
 794                 }
 795                 break;
 796
 797         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 798         // that is traversed by a single <CursorLeft>/<CursorRight>.
 799         case LFUN_INSET_TOGGLE:
 800                 cur.recordUndo();
 801                 lock(!lock());
 802                 cur.popForward();
 803                 break;
 804
 805         case LFUN_SELF_INSERT:
 806                 if (cmd.argument().size() != 1) {
 807                         cur.recordUndoSelection();
 808                         docstring const arg = cmd.argument();
 809                         if (!interpretString(cur, arg))
 810                                 cur.insert(arg);
 811                         break;
 812                 }
 813                 // Don't record undo steps if we are in macro mode and
 814                 // cmd.argument is the next character of the macro name.
 815                 // Otherwise we'll get an invalid cursor if we undo after
 816                 // the macro was finished and the macro is a known command,
 817                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 818                 // the InsetMathUnknown with name "frac" by an empty
 819                 // InsetMathFrac -> a pos value > 0 is invalid.
 820                 // A side effect is that an undo before the macro is finished
 821                 // undoes the complete macro, not only the last character.
 822                 if (!cur.inMacroMode())
 823                         cur.recordUndoSelection();
 824
 825                 // spacial handling of space. If we insert an inset
 826                 // via macro mode, we want to put the cursor inside it
 827                 // if relevant. Think typing "\frac<space>".
 828                 if (cmd.argument()[0] == ' '
 829                     && cur.inMacroMode() && cur.macroName() != "\\"
 830                     && cur.macroModeClose()) {
 831                         MathAtom const atom = cur.prevAtom();
 832                         if (atom->asNestInset() && atom->isActive()) {
 833                                 cur.posBackward();
 834                                 cur.pushBackward(*cur.nextInset());
 835                         }
 836                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 837                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 838                         cur.undispatched();
 839                 }
 840                 break;
 841
 842         //case LFUN_SERVER_GET_XY:
 843         //      sprintf(dispatch_buffer, "%d %d",);
 844         //      break;
 845
 846         case LFUN_SERVER_SET_XY: {
 847                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 848                 int x = 0;
 849                 int y = 0;
 850                 istringstream is(to_utf8(cmd.argument()));
 851                 is >> x >> y;
 852                 cur.setScreenPos(x, y);
 853                 break;
 854         }
 855
 856         // Special casing for superscript in case of LyX handling
 857         // dead-keys:
 858         case LFUN_ACCENT_CIRCUMFLEX:
 859                 if (cmd.argument().empty()) {
 860                         // do superscript if LyX handles
 861                         // deadkeys
 862                         cur.recordUndoSelection();
 863                         script(cur, true, grabAndEraseSelection(cur));
 864                 }
 865                 break;
 866
 867         case LFUN_ACCENT_UMLAUT:
 868         case LFUN_ACCENT_ACUTE:
 869         case LFUN_ACCENT_GRAVE:
 870         case LFUN_ACCENT_BREVE:
 871         case LFUN_ACCENT_DOT:
 872         case LFUN_ACCENT_MACRON:
 873         case LFUN_ACCENT_CARON:
 874         case LFUN_ACCENT_TILDE:
 875         case LFUN_ACCENT_CEDILLA:
 876         case LFUN_ACCENT_CIRCLE:
 877         case LFUN_ACCENT_UNDERDOT:
 878         case LFUN_ACCENT_TIE:
 879         case LFUN_ACCENT_OGONEK:
 880         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 881                 break;
 882
 883         //  Math fonts
 884         case LFUN_TEXTSTYLE_APPLY:
 885         case LFUN_TEXTSTYLE_UPDATE:
 886                 handleFont2(cur, cmd.argument());
 887                 break;
 888
 889         case LFUN_FONT_BOLD:
 890                 if (currentMode() == TEXT_MODE)
 891                         handleFont(cur, cmd.argument(), "textbf");
 892                 else
 893                         handleFont(cur, cmd.argument(), "mathbf");
 894                 break;
 895         case LFUN_FONT_BOLDSYMBOL:
 896                 if (currentMode() == TEXT_MODE)
 897                         handleFont(cur, cmd.argument(), "textbf");
 898                 else
 899                         handleFont(cur, cmd.argument(), "boldsymbol");
 900                 break;
 901         case LFUN_FONT_SANS:
 902                 if (currentMode() == TEXT_MODE)
 903                         handleFont(cur, cmd.argument(), "textsf");
 904                 else
 905                         handleFont(cur, cmd.argument(), "mathsf");
 906                 break;
 907         case LFUN_FONT_EMPH:
 908                 if (currentMode() == TEXT_MODE)
 909                         handleFont(cur, cmd.argument(), "emph");
 910                 else
 911                         handleFont(cur, cmd.argument(), "mathcal");
 912                 break;
 913         case LFUN_FONT_ROMAN:
 914                 if (currentMode() == TEXT_MODE)
 915                         handleFont(cur, cmd.argument(), "textrm");
 916                 else
 917                         handleFont(cur, cmd.argument(), "mathrm");
 918                 break;
 919         case LFUN_FONT_TYPEWRITER:
 920                 if (currentMode() == TEXT_MODE)
 921                         handleFont(cur, cmd.argument(), "texttt");
 922                 else
 923                         handleFont(cur, cmd.argument(), "mathtt");
 924                 break;
 925         case LFUN_FONT_FRAK:
 926                 handleFont(cur, cmd.argument(), "mathfrak");
 927                 break;
 928         case LFUN_FONT_ITAL:
 929                 if (currentMode() == TEXT_MODE)
 930                         handleFont(cur, cmd.argument(), "textit");
 931                 else
 932                         handleFont(cur, cmd.argument(), "mathit");
 933                 break;
 934         case LFUN_FONT_NOUN:
 935                 if (currentMode() == TEXT_MODE)
 936                         // FIXME: should be "noun"
 937                         handleFont(cur, cmd.argument(), "textsc");
 938                 else
 939                         handleFont(cur, cmd.argument(), "mathbb");
 940                 break;
 941         case LFUN_FONT_DEFAULT:
 942                 handleFont(cur, cmd.argument(), "textnormal");
 943                 break;
 944
 945         case LFUN_MATH_MODE: {
 946 #if 1
 947                 // ignore math-mode on when already in math mode
 948                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 949                         break;
 950                 cur.recordUndoSelection();
 951                 cur.macroModeClose();
 952                 docstring const save_selection = grabAndEraseSelection(cur);
 953                 selClearOrDel(cur);
 954                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 955                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 956                 cur.posBackward();
 957                 cur.pushBackward(*cur.nextInset());
 958                 cur.niceInsert(save_selection);
 959 #else
 960                 if (currentMode() == Inset::TEXT_MODE) {
 961                         cur.recordUndoSelection();
 962                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 963                         cur.message(_("create new math text environment ($...$)"));
 964                 } else {
 965                         handleFont(cur, cmd.argument(), "textrm");
 966                         cur.message(_("entered math text mode (textrm)"));
 967                 }
 968 #endif
 969                 break;
 970         }
 971
 972         case LFUN_REGEXP_MODE: {
 973                 InsetMathHull * i = dynamic_cast<InsetMathHull *>(cur.inset().asInsetMath());
 974                 if (i && i->getType() == hullRegexp) {
 975                         cur.message(_("Already in regexp mode"));
 976                         break;
 977                 }
 978                 cur.macroModeClose();
 979                 docstring const save_selection = grabAndEraseSelection(cur);
 980                 selClearOrDel(cur);
 981                 cur.plainInsert(MathAtom(new InsetMathHull(hullRegexp)));
 982                 cur.posBackward();
 983                 cur.pushBackward(*cur.nextInset());
 984                 cur.niceInsert(save_selection);
 985                 cur.message(_("Regexp editor mode"));
 986                 break;
 987         }
 988
 989         case LFUN_MATH_SIZE: {
 990                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, cmd.argument());
 991                 doDispatch(cur, fr);
 992                 break;
 993         }
 994
 995         case LFUN_MATH_MATRIX: {
 996                 cur.recordUndo();
 997                 unsigned int m = 1;
 998                 unsigned int n = 1;
 999                 docstring v_align;
1000                 docstring h_align;
1001                 idocstringstream is(cmd.argument());
1002                 is >> m >> n >> v_align >> h_align;
1003                 if (m < 1)
1004                         m = 1;
1005                 if (n < 1)
1006                         n = 1;
1007                 v_align += 'c';
1008                 cur.niceInsert(
1009                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
1010                 break;
1011         }
1012
1013         case LFUN_MATH_DELIM: {
1014                 docstring ls;
1015                 docstring rs = split(cmd.argument(), ls, ' ');
1016                 // Reasonable default values
1017                 if (ls.empty())
1018                         ls = '(';
1019                 if (rs.empty())
1020                         rs = ')';
1021                 cur.recordUndo();
1022                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
1023                 break;
1024         }
1025
1026         case LFUN_MATH_BIGDELIM: {
1027                 docstring const lname  = from_utf8(cmd.getArg(0));
1028                 docstring const ldelim = from_utf8(cmd.getArg(1));
1029                 docstring const rname  = from_utf8(cmd.getArg(2));
1030                 docstring const rdelim = from_utf8(cmd.getArg(3));
1031                 latexkeys const * l = in_word_set(lname);
1032                 bool const have_l = l && l->inset == "big" &&
1033                                     InsetMathBig::isBigInsetDelim(ldelim);
1034                 l = in_word_set(rname);
1035                 bool const have_r = l && l->inset == "big" &&
1036                                     InsetMathBig::isBigInsetDelim(rdelim);
1037                 // We mimic LFUN_MATH_DELIM in case we have an empty left
1038                 // or right delimiter.
1039                 if (have_l || have_r) {
1040                         cur.recordUndo();
1041                         docstring const selection = grabAndEraseSelection(cur);
1042                         selClearOrDel(cur);
1043                         if (have_l)
1044                                 cur.insert(MathAtom(new InsetMathBig(lname,
1045                                                                 ldelim)));
1046                         cur.niceInsert(selection);
1047                         if (have_r)
1048                                 cur.insert(MathAtom(new InsetMathBig(rname,
1049                                                                 rdelim)));
1050                 }
1051                 // Don't call cur.undispatched() if we did nothing, this would
1052                 // lead to infinite recursion via Text::dispatch().
1053                 break;
1054         }
1055
1056         case LFUN_SPACE_INSERT:
1057                 cur.recordUndoSelection();
1058                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
1059                 break;
1060
1061         case LFUN_MATH_SPACE:
1062                 cur.recordUndoSelection();
1063                 if (cmd.argument().empty())
1064                         cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
1065                 else
1066                         cur.insert(MathAtom(new InsetMathSpace(cmd.argument())));
1067                 break;
1068
1069         case LFUN_ERT_INSERT:
1070                 // interpret this as if a backslash was typed
1071                 cur.recordUndo();
1072                 interpretChar(cur, '\\');
1073                 break;
1074
1075         case LFUN_MATH_SUBSCRIPT:
1076                 // interpret this as if a _ was typed
1077                 cur.recordUndoSelection();
1078                 interpretChar(cur, '_');
1079                 break;
1080
1081         case LFUN_MATH_SUPERSCRIPT:
1082                 // interpret this as if a ^ was typed
1083                 cur.recordUndoSelection();
1084                 interpretChar(cur, '^');
1085                 break;
1086
1087         case LFUN_MATH_MACRO_FOLD:
1088         case LFUN_MATH_MACRO_UNFOLD: {
1089                 Cursor it = cur;
1090                 bool fold = cmd.action == LFUN_MATH_MACRO_FOLD;
1091                 bool found = findMacroToFoldUnfold(it, fold);
1092                 if (found) {
1093                         MathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1094                         cur.recordUndoInset();
1095                         if (fold)
1096                                 macro->fold(cur);
1097                         else
1098                                 macro->unfold(cur);
1099                 }
1100                 break;
1101         }
1102
1103         case LFUN_QUOTE_INSERT:
1104                 // interpret this as if a straight " was typed
1105                 cur.recordUndoSelection();
1106                 interpretChar(cur, '\"');
1107                 break;
1108
1109 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1110 // handling such that "self-insert" works on "arbitrary stuff" too, and
1111 // math-insert only handles special math things like "matrix".
1112         case LFUN_MATH_INSERT: {
1113                 cur.recordUndoSelection();
1114                 if (cmd.argument() == "^" || cmd.argument() == "_")
1115                         interpretChar(cur, cmd.argument()[0]);
1116                 else {
1117                         MathData ar;
1118                         asArray(cmd.argument(), ar);
1119                         if (ar.size() == 1 && ar[0]->asNestInset()
1120                                         && ar[0]->asNestInset()->nargs() > 1)
1121                                 handleNest(cur, ar[0]);
1122                         else
1123                                 cur.niceInsert(cmd.argument());
1124                 }
1125                 break;
1126                 }
1127
1128         case LFUN_DIALOG_SHOW_NEW_INSET: {
1129                 docstring const & name = cmd.argument();
1130                 string data;
1131                 if (name == "ref") {
1132                         InsetMathRef tmp(name);
1133                         data = tmp.createDialogStr(to_utf8(name));
1134                 }
1135                 cur.bv().showDialog(to_utf8(name), data);
1136                 break;
1137         }
1138
1139         case LFUN_INSET_INSERT: {
1140                 MathData ar;
1141                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1142                         cur.recordUndoSelection();
1143                         cur.insert(ar);
1144                 } else
1145                         cur.undispatched();
1146                 break;
1147         }
1148         case LFUN_INSET_DISSOLVE:
1149                 if (!asHullInset()) {
1150                         cur.recordUndoInset();
1151                         cur.pullArg();
1152                 }
1153                 break;
1154
1155         default:
1156                 InsetMath::doDispatch(cur, cmd);
1157                 break;
1158         }
1159 }
1160
1161
1162 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1163         // look for macro to open/close, but stay in mathed
1164         for (; !it.empty(); it.pop_back()) {
1165
1166                 // go backward through the current cell
1167                 Inset * inset = it.nextInset();
1168                 while (inset && inset->asInsetMath()) {
1169                         MathMacro * macro = inset->asInsetMath()->asMacro();
1170                         if (macro) {
1171                                 // found the an macro to open/close?
1172                                 if (macro->folded() != fold)
1173                                         return true;
1174
1175                                 // Wrong folding state.
1176                                 // If this was the first we see in this slice, look further left,
1177                                 // otherwise go up.
1178                                 if (inset != it.nextInset())
1179                                         break;
1180                         }
1181
1182                         // go up if this was the left most position
1183                         if (it.pos() == 0)
1184                                 break;
1185
1186                         // go left
1187                         it.pos()--;
1188                         inset = it.nextInset();
1189                 }
1190         }
1191
1192         return false;
1193 }
1194
1195
1196 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1197                 FuncStatus & flag) const
1198 {
1199         // the font related toggles
1200         //string tc = "mathnormal";
1201         bool ret = true;
1202         string const arg = to_utf8(cmd.argument());
1203         switch (cmd.action) {
1204         case LFUN_TABULAR_FEATURE:
1205                 flag.setEnabled(false);
1206                 break;
1207 #if 0
1208         case LFUN_TABULAR_FEATURE:
1209                 // FIXME: check temporarily disabled
1210                 // valign code
1211                 char align = mathcursor::valign();
1212                 if (align == '\0') {
1213                         enable = false;
1214                         break;
1215                 }
1216                 if (cmd.argument().empty()) {
1217                         flag.clear();
1218                         break;
1219                 }
1220                 if (!contains("tcb", cmd.argument()[0])) {
1221                         enable = false;
1222                         break;
1223                 }
1224                 flag.setOnOff(cmd.argument()[0] == align);
1225                 break;
1226 #endif
1227         /// We have to handle them since 1.4 blocks all unhandled actions
1228         case LFUN_FONT_ITAL:
1229         case LFUN_FONT_BOLD:
1230         case LFUN_FONT_BOLDSYMBOL:
1231         case LFUN_FONT_SANS:
1232         case LFUN_FONT_EMPH:
1233         case LFUN_FONT_TYPEWRITER:
1234         case LFUN_FONT_NOUN:
1235         case LFUN_FONT_ROMAN:
1236         case LFUN_FONT_DEFAULT:
1237                 flag.setEnabled(true);
1238                 break;
1239         case LFUN_MATH_MUTATE:
1240                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1241                 flag.setOnOff(false);
1242                 break;
1243
1244         // we just need to be in math mode to enable that
1245         case LFUN_MATH_SIZE:
1246         case LFUN_MATH_SPACE:
1247         case LFUN_MATH_LIMITS:
1248         case LFUN_MATH_EXTERN:
1249                 flag.setEnabled(true);
1250                 break;
1251
1252         case LFUN_FONT_FRAK:
1253                 flag.setEnabled(currentMode() != TEXT_MODE);
1254                 break;
1255
1256         case LFUN_MATH_INSERT: {
1257                 bool const textarg =
1258                         arg == "\\textbf"   || arg == "\\textsf" ||
1259                         arg == "\\textrm"   || arg == "\\textmd" ||
1260                         arg == "\\textit"   || arg == "\\textsc" ||
1261                         arg == "\\textsl"   || arg == "\\textup" ||
1262                         arg == "\\texttt"   || arg == "\\textbb" ||
1263                         arg == "\\textnormal";
1264                 flag.setEnabled(currentMode() != TEXT_MODE || textarg);
1265                 break;
1266         }
1267
1268         case LFUN_MATH_MATRIX:
1269                 flag.setEnabled(currentMode() == MATH_MODE);
1270                 break;
1271
1272         case LFUN_INSET_INSERT: {
1273                 // Don't test createMathInset_fromDialogStr(), since
1274                 // getStatus is not called with a valid reference and the
1275                 // dialog would not be applyable.
1276                 string const name = cmd.getArg(0);
1277                 flag.setEnabled(name == "ref");
1278                 break;
1279         }
1280
1281         case LFUN_MATH_DELIM:
1282         case LFUN_MATH_BIGDELIM:
1283                 // Don't do this with multi-cell selections
1284                 flag.setEnabled(cur.selBegin().idx() == cur.selEnd().idx());
1285                 break;
1286
1287         case LFUN_MATH_MACRO_FOLD:
1288         case LFUN_MATH_MACRO_UNFOLD: {
1289                 Cursor it = cur;
1290                 bool found = findMacroToFoldUnfold(it, cmd.action == LFUN_MATH_MACRO_FOLD);
1291                 flag.setEnabled(found);
1292                 break;
1293         }
1294
1295         case LFUN_SPECIALCHAR_INSERT:
1296                 // FIXME: These would probably make sense in math-text mode
1297                 flag.setEnabled(false);
1298                 break;
1299
1300         case LFUN_INSET_DISSOLVE:
1301                 flag.setEnabled(!asHullInset());
1302                 break;
1303
1304         default:
1305                 ret = false;
1306                 break;
1307         }
1308         return ret;
1309 }
1310
1311
1312 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1313 {
1314         cur.push(*this);
1315         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_RIGHT ||
1316                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1317         cur.idx() = enter_front ? 0 : cur.lastidx();
1318         cur.pos() = enter_front ? 0 : cur.lastpos();
1319         cur.resetAnchor();
1320         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1321 }
1322
1323
1324 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1325 {
1326         int idx_min = 0;
1327         int dist_min = 1000000;
1328         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1329                 int const d = cell(i).dist(cur.bv(), x, y);
1330                 if (d < dist_min) {
1331                         dist_min = d;
1332                         idx_min = i;
1333                 }
1334         }
1335         MathData & ar = cell(idx_min);
1336         cur.push(*this);
1337         cur.idx() = idx_min;
1338         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1339
1340         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1341         if (dist_min == 0) {
1342                 // hit inside cell
1343                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1344                         if (ar[i]->covers(cur.bv(), x, y))
1345                                 return ar[i].nucleus()->editXY(cur, x, y);
1346         }
1347         return this;
1348 }
1349
1350
1351 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1352 {
1353         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1354         BufferView & bv = cur.bv();
1355         bool do_selection = cmd.button() == mouse_button::button1
1356                 && cmd.argument() == "region-select";
1357         bv.mouseSetCursor(cur, do_selection);
1358         if (cmd.button() == mouse_button::button1) {
1359                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1360                 // Update the cursor update flags as needed:
1361                 //
1362                 // Update::Decoration: tells to update the decoration
1363                 //                     (visual box corners that define
1364                 //                     the inset)/
1365                 // Update::FitCursor: adjust the screen to the cursor
1366                 //                    position if needed
1367                 // cur.result().update(): don't overwrite previously set flags.
1368                 cur.updateFlags(Update::Decoration | Update::FitCursor
1369                                 | cur.result().update());
1370         } else if (cmd.button() == mouse_button::button2) {
1371                 if (cap::selection()) {
1372                         // See comment in Text::dispatch why we do this
1373                         cap::copySelectionToStack();
1374                         cmd = FuncRequest(LFUN_PASTE, "0");
1375                         doDispatch(bv.cursor(), cmd);
1376                 } else {
1377                         MathData ar;
1378                         asArray(theSelection().get(), ar);
1379                         bv.cursor().insert(ar);
1380                 }
1381         }
1382 }
1383
1384
1385 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1386 {
1387         // only select with button 1
1388         if (cmd.button() == mouse_button::button1) {
1389                 Cursor & bvcur = cur.bv().cursor();
1390                 if (bvcur.anchor_.hasPart(cur)) {
1391                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1392                         bvcur.setCursor(cur);
1393                         bvcur.setSelection(true);
1394                         //lyxerr << "MOTION " << bvcur << endl;
1395                 } else
1396                         cur.undispatched();
1397         }
1398 }
1399
1400
1401 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1402 {
1403         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1404
1405         if (cmd.button() == mouse_button::button1) {
1406                 if (!cur.selection())
1407                         cur.noUpdate();
1408                 else {
1409                         Cursor & bvcur = cur.bv().cursor();
1410                         bvcur.setSelection(true);
1411                 }
1412                 return;
1413         }
1414
1415         cur.undispatched();
1416 }
1417
1418
1419 bool InsetMathNest::interpretChar(Cursor & cur, char_type const c)
1420 {
1421         //lyxerr << "interpret 2: '" << c << "'" << endl;
1422         docstring save_selection;
1423         if (c == '^' || c == '_')
1424                 save_selection = grabAndEraseSelection(cur);
1425
1426         cur.clearTargetX();
1427
1428         // handle macroMode
1429         if (cur.inMacroMode()) {
1430                 docstring name = cur.macroName();
1431
1432                 /// are we currently typing '#1' or '#2' or...?
1433                 if (name == "\\#") {
1434                         cur.backspace();
1435                         int n = c - '0';
1436                         if (n >= 1 && n <= 9)
1437                                 cur.insert(new MathMacroArgument(n));
1438                         return true;
1439                 }
1440
1441                 // do not finish macro for known * commands
1442                 MathWordList const & mwl = mathedWordList();
1443                 bool star_macro = c == '*'
1444                         && (mwl.find(name.substr(1) + "*") != mwl.end()
1445                             || cur.buffer()->getMacro(name.substr(1) + "*", cur, true));
1446                 if (isAlphaASCII(c) || star_macro) {
1447                         cur.activeMacro()->setName(name + docstring(1, c));
1448                         return true;
1449                 }
1450
1451                 // handle 'special char' macros
1452                 if (name == "\\") {
1453                         // remove the '\\'
1454                         if (c == '\\') {
1455                                 cur.backspace();
1456                                 if (currentMode() == InsetMath::TEXT_MODE)
1457                                         cur.niceInsert(createInsetMath("textbackslash"));
1458                                 else
1459                                         cur.niceInsert(createInsetMath("backslash"));
1460                         } else if (c == '^' && currentMode() == InsetMath::MATH_MODE) {
1461                                 cur.backspace();
1462                                 cur.niceInsert(createInsetMath("mathcircumflex"));
1463                         } else if (c == '{') {
1464                                 cur.backspace();
1465                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1466                         } else if (c == '%') {
1467                                 cur.backspace();
1468                                 cur.niceInsert(MathAtom(new InsetMathComment));
1469                         } else if (c == '#') {
1470                                 LASSERT(cur.activeMacro(), /**/);
1471                                 cur.activeMacro()->setName(name + docstring(1, c));
1472                         } else {
1473                                 cur.backspace();
1474                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1475                         }
1476                         return true;
1477                 }
1478
1479                 // One character big delimiters. The others are handled in
1480                 // interpretString().
1481                 latexkeys const * l = in_word_set(name.substr(1));
1482                 if (name[0] == '\\' && l && l->inset == "big") {
1483                         docstring delim;
1484                         switch (c) {
1485                         case '{':
1486                                 delim = from_ascii("\\{");
1487                                 break;
1488                         case '}':
1489                                 delim = from_ascii("\\}");
1490                                 break;
1491                         default:
1492                                 delim = docstring(1, c);
1493                                 break;
1494                         }
1495                         if (InsetMathBig::isBigInsetDelim(delim)) {
1496                                 // name + delim ared a valid InsetMathBig.
1497                                 // We can't use cur.macroModeClose() because
1498                                 // it does not handle delim.
1499                                 InsetMathUnknown * p = cur.activeMacro();
1500                                 p->finalize();
1501                                 --cur.pos();
1502                                 cur.cell().erase(cur.pos());
1503                                 cur.plainInsert(MathAtom(
1504                                         new InsetMathBig(name.substr(1), delim)));
1505                                 return true;
1506                         }
1507                 }
1508
1509                 // leave macro mode and try again if necessary
1510                 cur.macroModeClose();
1511                 if (c == '{')
1512                         cur.niceInsert(MathAtom(new InsetMathBrace));
1513                 else if (c != ' ')
1514                         interpretChar(cur, c);
1515                 return true;
1516         }
1517
1518         // This is annoying as one has to press <space> far too often.
1519         // Disable it.
1520
1521 #ifdef AUTOCORRECT
1522                 // leave autocorrect mode if necessary
1523                 if (cur.autocorrect() && c == ' ') {
1524                         cur.autocorrect() = false;
1525                         return true;
1526                 }
1527 #endif
1528
1529         // just clear selection on pressing the space bar
1530         if (cur.selection() && c == ' ') {
1531                 cur.setSelection(false);
1532                 return true;
1533         }
1534
1535         if (c == '\\') {
1536                 //lyxerr << "starting with macro" << endl;
1537                 bool reduced = cap::reduceSelectionToOneCell(cur);
1538                 if (reduced || !cur.selection()) {
1539                         docstring const safe = cap::grabAndEraseSelection(cur);
1540                         cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1541                 }
1542                 return true;
1543         }
1544
1545         selClearOrDel(cur);
1546
1547         if (c == '\n') {
1548                 if (currentMode() == InsetMath::TEXT_MODE)
1549                         cur.insert(c);
1550                 return true;
1551         }
1552
1553         if (c == ' ') {
1554                 if (currentMode() == InsetMath::TEXT_MODE) {
1555                         // insert spaces in text mode,
1556                         // but suppress direct insertion of two spaces in a row
1557                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1558                         // it is better than nothing...
1559                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1560                                 cur.insert(c);
1561                                 // FIXME: we have to enable full redraw here because of the
1562                                 // visual box corners that define the inset. If we know for
1563                                 // sure that we stay within the same cell we can optimize for
1564                                 // that using:
1565                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1566                         }
1567                         return true;
1568                 }
1569                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1570                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1571                         // FIXME: we have to enable full redraw here because of the
1572                         // visual box corners that define the inset. If we know for
1573                         // sure that we stay within the same cell we can optimize for
1574                         // that using:
1575                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1576                         return true;
1577                 }
1578
1579                 if (cur.popForward()) {
1580                         // FIXME: we have to enable full redraw here because of the
1581                         // visual box corners that define the inset. If we know for
1582                         // sure that we stay within the same cell we can optimize for
1583                         // that using:
1584                         //cur.updateFlags(Update::FitCursor);
1585                         return true;
1586                 }
1587
1588                 // if we are at the very end, leave the formula
1589                 return cur.pos() != cur.lastpos();
1590         }
1591
1592         // These should be treated differently when not in text mode:
1593         if (currentMode() != InsetMath::TEXT_MODE) {
1594                 if (c == '_') {
1595                         script(cur, false, save_selection);
1596                         return true;
1597                 }
1598                 if (c == '^') {
1599                         script(cur, true, save_selection);
1600                         return true;
1601                 }
1602                 if (c == '~') {
1603                         cur.niceInsert(createInsetMath("sim"));
1604                         return true;
1605                 }
1606         } else {
1607                 if (c == '^') {
1608                         cur.niceInsert(createInsetMath("textasciicircum"));
1609                         return true;
1610                 }
1611                 if (c == '~') {
1612                         cur.niceInsert(createInsetMath("textasciitilde"));
1613                         return true;
1614                 }
1615         }
1616
1617         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1618             c == '%' || c == '_') {
1619                 cur.niceInsert(createInsetMath(docstring(1, c)));
1620                 return true;
1621         }
1622
1623
1624 #ifdef AUTOCORRECT
1625         // try auto-correction
1626         if (cur.autocorrect() && cur.pos() != 0 && math_autocorrect(cur.prevAtom(), c))
1627                 return true;
1628 #endif
1629
1630         // no special circumstances, so insert the character without any fuss
1631         cur.insert(c);
1632         cur.autocorrect() = true;
1633         return true;
1634 }
1635
1636
1637 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1638 {
1639         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1640         // possible
1641         if (!cur.empty() && cur.pos() > 0 &&
1642             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1643                 if (InsetMathBig::isBigInsetDelim(str)) {
1644                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1645                         if (prev[0] == '\\') {
1646                                 prev = prev.substr(1);
1647                                 latexkeys const * l = in_word_set(prev);
1648                                 if (l && l->inset == "big") {
1649                                         cur.cell()[cur.pos() - 1] =
1650                                                 MathAtom(new InsetMathBig(prev, str));
1651                                         return true;
1652                                 }
1653                         }
1654                 }
1655         }
1656         return false;
1657 }
1658
1659
1660 bool InsetMathNest::script(Cursor & cur, bool up)
1661 {
1662         return script(cur, up, docstring());
1663 }
1664
1665
1666 bool InsetMathNest::script(Cursor & cur, bool up,
1667                 docstring const & save_selection)
1668 {
1669         // Hack to get \^ and \_ working
1670         //lyxerr << "handling script: up: " << up << endl;
1671         if (cur.inMacroMode() && cur.macroName() == "\\") {
1672                 if (up)
1673                         cur.niceInsert(createInsetMath("mathcircumflex"));
1674                 else
1675                         interpretChar(cur, '_');
1676                 return true;
1677         }
1678
1679         cur.macroModeClose();
1680         if (asScriptInset() && cur.idx() == 0) {
1681                 // we are in a nucleus of a script inset, move to _our_ script
1682                 InsetMathScript * inset = asScriptInset();
1683                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1684                 inset->ensure(up);
1685                 cur.idx() = inset->idxOfScript(up);
1686                 cur.pos() = 0;
1687         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1688                 --cur.pos();
1689                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1690                 cur.push(*inset);
1691                 inset->ensure(up);
1692                 cur.idx() = inset->idxOfScript(up);
1693                 cur.pos() = cur.lastpos();
1694         } else {
1695                 // convert the thing to our left to a scriptinset or create a new
1696                 // one if in the very first position of the array
1697                 if (cur.pos() == 0) {
1698                         //lyxerr << "new scriptinset" << endl;
1699                         cur.insert(new InsetMathScript(up));
1700                 } else {
1701                         //lyxerr << "converting prev atom " << endl;
1702                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1703                 }
1704                 --cur.pos();
1705                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1706                 // See comment in MathParser.cpp for special handling of {}-bases
1707
1708                 cur.push(*inset);
1709                 cur.idx() = 1;
1710                 cur.pos() = 0;
1711         }
1712         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1713         cur.niceInsert(save_selection);
1714         cur.resetAnchor();
1715         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1716         return true;
1717 }
1718
1719
1720 bool InsetMathNest::completionSupported(Cursor const & cur) const
1721 {
1722         return cur.inMacroMode();
1723 }
1724
1725
1726 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
1727 {
1728         return cur.inMacroMode();
1729 }
1730
1731
1732 bool InsetMathNest::automaticInlineCompletion() const
1733 {
1734         return lyxrc.completion_inline_math;
1735 }
1736
1737
1738 bool InsetMathNest::automaticPopupCompletion() const
1739 {
1740         return lyxrc.completion_popup_math;
1741 }
1742
1743
1744 CompletionList const *
1745 InsetMathNest::createCompletionList(Cursor const & cur) const
1746 {
1747         if (!cur.inMacroMode())
1748                 return 0;
1749
1750         return new MathCompletionList(cur);
1751 }
1752
1753
1754 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
1755 {
1756         if (!cur.inMacroMode())
1757                 return docstring();
1758
1759         return cur.activeMacro()->name();
1760 }
1761
1762
1763 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
1764                                      bool finished)
1765 {
1766         if (!cur.inMacroMode())
1767                 return false;
1768
1769         // append completion to active macro
1770         InsetMathUnknown * inset = cur.activeMacro();
1771         inset->setName(inset->name() + s);
1772
1773         // finish macro
1774         if (finished) {
1775 #if 0
1776                 // FIXME: this creates duplicates in the completion popup
1777                 // which looks ugly. Moreover the changes the list lengths
1778                 // which seems to
1779                 confuse the popup as well.
1780                 MathCompletionList::addToFavorites(inset->name());
1781 #endif
1782                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
1783         }
1784
1785         return true;
1786 }
1787
1788
1789 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
1790                                         Dimension & dim) const
1791 {
1792         Inset const * inset = cur.activeMacro();
1793         if (!inset)
1794                 return;
1795
1796         // get inset dimensions
1797         dim = cur.bv().coordCache().insets().dim(inset);
1798         // FIXME: these 3 are no accurate, but should depend on the font.
1799         // Now the popup jumps down if you enter a char with descent > 0.
1800         dim.des += 3;
1801         dim.asc += 3;
1802
1803         // and position
1804         Point xy
1805         = cur.bv().coordCache().insets().xy(inset);
1806         x = xy.x_;
1807         y = xy.y_;
1808 }
1809
1810
1811 bool InsetMathNest::cursorMathForward(Cursor & cur)
1812 {
1813         if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
1814                 cur.pushBackward(*cur.nextAtom().nucleus());
1815                 cur.inset().idxFirst(cur);
1816                 return true;
1817         }
1818         if (cur.posForward() || idxForward(cur))
1819                 return true;
1820         // try to pop forwards --- but don't pop out of math! leave that to
1821         // the FINISH lfuns
1822         int s = cur.depth() - 2;
1823         if (s >= 0 && cur[s].inset().asInsetMath())
1824                 return cur.popForward();
1825         return false;
1826 }
1827
1828
1829 bool InsetMathNest::cursorMathBackward(Cursor & cur)
1830 {
1831         if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
1832                 cur.posBackward();
1833                 cur.push(*cur.nextAtom().nucleus());
1834                 cur.inset().idxLast(cur);
1835                 return true;
1836         }
1837         if (cur.posBackward() || idxBackward(cur))
1838                 return true;
1839         // try to pop backwards --- but don't pop out of math! leave that to
1840         // the FINISH lfuns
1841         int s = cur.depth() - 2;
1842         if (s >= 0 && cur[s].inset().asInsetMath())
1843                 return cur.popBackward();
1844         return false;
1845 }
1846
1847
1848 ////////////////////////////////////////////////////////////////////
1849
1850 MathCompletionList::MathCompletionList(Cursor const & cur)
1851 {
1852         // fill it with macros from the buffer
1853         MacroNameSet macros;
1854         cur.buffer()->listMacroNames(macros);
1855         MacroNameSet::const_iterator it;
1856         for (it = macros.begin(); it != macros.end(); ++it) {
1857                 if (cur.buffer()->getMacro(*it, cur, false))
1858                         locals.push_back("\\" + *it);
1859         }
1860         sort(locals.begin(), locals.end());
1861
1862         if (globals.size() > 0)
1863                 return;
1864
1865         // fill in global macros
1866         macros.clear();
1867         MacroTable::globalMacros().getMacroNames(macros);
1868         //lyxerr << "Globals completion macros: ";
1869         for (it = macros.begin(); it != macros.end(); ++it) {
1870                 //lyxerr << "\\" + *it << " ";
1871                 globals.push_back("\\" + *it);
1872         }
1873         //lyxerr << std::endl;
1874
1875         // fill in global commands
1876         globals.push_back(from_ascii("\\boxed"));
1877         globals.push_back(from_ascii("\\fbox"));
1878         globals.push_back(from_ascii("\\framebox"));
1879         globals.push_back(from_ascii("\\makebox"));
1880         globals.push_back(from_ascii("\\kern"));
1881         globals.push_back(from_ascii("\\xrightarrow"));
1882         globals.push_back(from_ascii("\\xleftarrow"));
1883         globals.push_back(from_ascii("\\split"));
1884         globals.push_back(from_ascii("\\gathered"));
1885         globals.push_back(from_ascii("\\aligned"));
1886         globals.push_back(from_ascii("\\alignedat"));
1887         globals.push_back(from_ascii("\\cases"));
1888         globals.push_back(from_ascii("\\substack"));
1889         globals.push_back(from_ascii("\\xymatrix"));
1890         globals.push_back(from_ascii("\\subarray"));
1891         globals.push_back(from_ascii("\\array"));
1892         globals.push_back(from_ascii("\\sqrt"));
1893         globals.push_back(from_ascii("\\root"));
1894         globals.push_back(from_ascii("\\tabular"));
1895         globals.push_back(from_ascii("\\stackrel"));
1896         globals.push_back(from_ascii("\\binom"));
1897         globals.push_back(from_ascii("\\choose"));
1898         globals.push_back(from_ascii("\\brace"));
1899         globals.push_back(from_ascii("\\brack"));
1900         globals.push_back(from_ascii("\\frac"));
1901         globals.push_back(from_ascii("\\over"));
1902         globals.push_back(from_ascii("\\nicefrac"));
1903         globals.push_back(from_ascii("\\unitfrac"));
1904         globals.push_back(from_ascii("\\unitfracthree"));
1905         globals.push_back(from_ascii("\\unitone"));
1906         globals.push_back(from_ascii("\\unittwo"));
1907         globals.push_back(from_ascii("\\infer"));
1908         globals.push_back(from_ascii("\\atop"));
1909         globals.push_back(from_ascii("\\lefteqn"));
1910         globals.push_back(from_ascii("\\boldsymbol"));
1911         globals.push_back(from_ascii("\\bm"));
1912         globals.push_back(from_ascii("\\color"));
1913         globals.push_back(from_ascii("\\normalcolor"));
1914         globals.push_back(from_ascii("\\textcolor"));
1915         globals.push_back(from_ascii("\\dfrac"));
1916         globals.push_back(from_ascii("\\tfrac"));
1917         globals.push_back(from_ascii("\\dbinom"));
1918         globals.push_back(from_ascii("\\tbinom"));
1919         globals.push_back(from_ascii("\\hphantom"));
1920         globals.push_back(from_ascii("\\phantom"));
1921         globals.push_back(from_ascii("\\vphantom"));
1922         MathWordList const & words = mathedWordList();
1923         MathWordList::const_iterator it2;
1924         //lyxerr << "Globals completion commands: ";
1925         for (it2 = words.begin(); it2 != words.end(); ++it2) {
1926                 globals.push_back("\\" + (*it2).first);
1927                 //lyxerr << "\\" + (*it2).first << " ";
1928         }
1929         //lyxerr << std::endl;
1930         sort(globals.begin(), globals.end());
1931 }
1932
1933
1934 MathCompletionList::~MathCompletionList()
1935 {
1936 }
1937
1938
1939 size_type MathCompletionList::size() const
1940 {
1941         return locals.size() + globals.size();
1942 }
1943
1944
1945 docstring const & MathCompletionList::data(size_t idx) const
1946 {
1947         size_t lsize = locals.size();
1948         if (idx >= lsize)
1949                 return globals[idx - lsize];
1950         else
1951                 return locals[idx];
1952 }
1953
1954
1955 std::string MathCompletionList::icon(size_t idx) const
1956 {
1957         // get the latex command
1958         docstring cmd;
1959         size_t lsize = locals.size();
1960         if (idx >= lsize)
1961                 cmd = globals[idx - lsize];
1962         else
1963                 cmd = locals[idx];
1964
1965         // get the icon resource name by stripping the backslash
1966         return "images/math/" + to_utf8(cmd.substr(1)) + ".png";
1967 }
1968
1969 std::vector<docstring> MathCompletionList::globals;
1970
1971 } // namespace lyx