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                         cur.recordUndoSelection();
 852                         docstring const arg = cmd.argument();
 853                         if (!interpretString(cur, arg))
 854                                 cur.insert(arg);
 855                         break;
 856                 }
 857                 // Don't record undo steps if we are in macro mode and thus
 858                 // cmd.argument is the next character of the macro name.
 859                 // Otherwise we'll get an invalid cursor if we undo after
 860                 // the macro was finished and the macro is a known command,
 861                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 862                 // the InsetMathUnknown with name "frac" by an empty
 863                 // InsetMathFrac -> a pos value > 0 is invalid.
 864                 // A side effect is that an undo before the macro is finished
 865                 // undoes the complete macro, not only the last character.
 866                 // At the time we hit '\' we are not in macro mode, still.
 867                 if (!cur.inMacroMode())
 868                         cur.recordUndoSelection();
 869
 870                 // spacial handling of space. If we insert an inset
 871                 // via macro mode, we want to put the cursor inside it
 872                 // if relevant. Think typing "\frac<space>".
 873                 if (cmd.argument()[0] == ' '
 874                     && cur.inMacroMode() && cur.macroName() != "\\"
 875                     && cur.macroModeClose()) {
 876                         MathAtom const atom = cur.prevAtom();
 877                         if (atom->asNestInset() && atom->isActive()) {
 878                                 cur.posBackward();
 879                                 cur.pushBackward(*cur.nextInset());
 880                         }
 881                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 882                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 883                         cur.undispatched();
 884                 }
 885                 break;
 886
 887         //case LFUN_SERVER_GET_XY:
 888         //      break;
 889
 890         case LFUN_SERVER_SET_XY: {
 891                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 892                 int x = 0;
 893                 int y = 0;
 894                 istringstream is(to_utf8(cmd.argument()));
 895                 is >> x >> y;
 896                 cur.setScreenPos(x, y);
 897                 break;
 898         }
 899
 900         // Special casing for superscript in case of LyX handling
 901         // dead-keys:
 902         case LFUN_ACCENT_CIRCUMFLEX:
 903                 if (cmd.argument().empty()) {
 904                         // do superscript if LyX handles
 905                         // deadkeys
 906                         cur.recordUndoSelection();
 907                         script(cur, true, grabAndEraseSelection(cur));
 908                 }
 909                 break;
 910
 911         case LFUN_ACCENT_UMLAUT:
 912         case LFUN_ACCENT_ACUTE:
 913         case LFUN_ACCENT_GRAVE:
 914         case LFUN_ACCENT_BREVE:
 915         case LFUN_ACCENT_DOT:
 916         case LFUN_ACCENT_MACRON:
 917         case LFUN_ACCENT_CARON:
 918         case LFUN_ACCENT_TILDE:
 919         case LFUN_ACCENT_CEDILLA:
 920         case LFUN_ACCENT_CIRCLE:
 921         case LFUN_ACCENT_UNDERDOT:
 922         case LFUN_ACCENT_TIE:
 923         case LFUN_ACCENT_OGONEK:
 924         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 925                 break;
 926
 927         //  Math fonts
 928         case LFUN_TEXTSTYLE_APPLY:
 929         case LFUN_TEXTSTYLE_UPDATE:
 930                 handleFont2(cur, cmd.argument());
 931                 break;
 932
 933         case LFUN_FONT_BOLD:
 934                 if (currentMode() <= TEXT_MODE)
 935                         handleFont(cur, cmd.argument(), "textbf");
 936                 else
 937                         handleFont(cur, cmd.argument(), "mathbf");
 938                 break;
 939         case LFUN_FONT_BOLDSYMBOL:
 940                 if (currentMode() <= TEXT_MODE)
 941                         handleFont(cur, cmd.argument(), "textbf");
 942                 else
 943                         handleFont(cur, cmd.argument(), "boldsymbol");
 944                 break;
 945         case LFUN_FONT_SANS:
 946                 if (currentMode() <= TEXT_MODE)
 947                         handleFont(cur, cmd.argument(), "textsf");
 948                 else
 949                         handleFont(cur, cmd.argument(), "mathsf");
 950                 break;
 951         case LFUN_FONT_EMPH:
 952                 if (currentMode() <= TEXT_MODE)
 953                         handleFont(cur, cmd.argument(), "emph");
 954                 else
 955                         handleFont(cur, cmd.argument(), "mathcal");
 956                 break;
 957         case LFUN_FONT_ROMAN:
 958                 if (currentMode() <= TEXT_MODE)
 959                         handleFont(cur, cmd.argument(), "textrm");
 960                 else
 961                         handleFont(cur, cmd.argument(), "mathrm");
 962                 break;
 963         case LFUN_FONT_TYPEWRITER:
 964                 if (currentMode() <= TEXT_MODE)
 965                         handleFont(cur, cmd.argument(), "texttt");
 966                 else
 967                         handleFont(cur, cmd.argument(), "mathtt");
 968                 break;
 969         case LFUN_FONT_FRAK:
 970                 handleFont(cur, cmd.argument(), "mathfrak");
 971                 break;
 972         case LFUN_FONT_ITAL:
 973                 if (currentMode() <= TEXT_MODE)
 974                         handleFont(cur, cmd.argument(), "textit");
 975                 else
 976                         handleFont(cur, cmd.argument(), "mathit");
 977                 break;
 978         case LFUN_FONT_NOUN:
 979                 if (currentMode() <= TEXT_MODE)
 980                         // FIXME: should be "noun"
 981                         handleFont(cur, cmd.argument(), "textsc");
 982                 else
 983                         handleFont(cur, cmd.argument(), "mathbb");
 984                 break;
 985         case LFUN_FONT_DEFAULT:
 986                 handleFont(cur, cmd.argument(), "textnormal");
 987                 break;
 988
 989         case LFUN_FONT_UNDERLINE:
 990                 cur.recordUndo();
 991                 cur.handleNest(createInsetMath("underline", cur.buffer()));
 992                 break;
 993         case LFUN_MATH_MODE: {
 994 #if 1
 995                 // ignore math-mode on when already in math mode
 996                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 997                         break;
 998                 cur.recordUndoSelection();
 999                 cur.macroModeClose();
1000                 docstring const save_selection = grabAndEraseSelection(cur);
1001                 selClearOrDel(cur);
1002                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
1003                 if (currentMode() <= Inset::TEXT_MODE)
1004                         cur.plainInsert(MathAtom(new InsetMathEnsureMath(buffer_)));
1005                 else
1006                         cur.plainInsert(MathAtom(new InsetMathBox(buffer_, from_ascii("mbox"))));
1007                 cur.posBackward();
1008                 cur.pushBackward(*cur.nextInset());
1009                 cur.niceInsert(save_selection);
1010                 cur.forceBufferUpdate();
1011 #else
1012                 if (currentMode() == Inset::TEXT_MODE) {
1013                         cur.recordUndoSelection();
1014                         cur.niceInsert(MathAtom(new InsetMathHull("simple", cur.buffer())));
1015                         cur.message(_("create new math text environment ($...$)"));
1016                 } else {
1017                         handleFont(cur, cmd.argument(), "textrm");
1018                         cur.message(_("entered math text mode (textrm)"));
1019                 }
1020 #endif
1021                 break;
1022         }
1023
1024         case LFUN_REGEXP_MODE: {
1025                 InsetMath * im = cur.inset().asInsetMath();
1026                 if (im) {
1027                         InsetMathHull * i = im->asHullInset();
1028                         if (i && i->getType() == hullRegexp) {
1029                                 cur.message(_("Already in regular expression mode"));
1030                                 break;
1031                         }
1032                 }
1033                 cur.macroModeClose();
1034                 docstring const save_selection = grabAndEraseSelection(cur);
1035                 selClearOrDel(cur);
1036                 cur.plainInsert(MathAtom(new InsetMathHull(buffer_, hullRegexp)));
1037                 cur.posBackward();
1038                 cur.pushBackward(*cur.nextInset());
1039                 cur.niceInsert(save_selection);
1040                 cur.message(_("Regular expression editor mode"));
1041                 break;
1042         }
1043
1044         case LFUN_MATH_FONT_STYLE: {
1045                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, '\\' + cmd.argument());
1046                 doDispatch(cur, fr);
1047                 break;
1048         }
1049
1050         case LFUN_MATH_SIZE: {
1051                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, cmd.argument());
1052                 doDispatch(cur, fr);
1053                 break;
1054         }
1055
1056         case LFUN_MATH_MATRIX: {
1057                 cur.recordUndo();
1058                 unsigned int m = 1;
1059                 unsigned int n = 1;
1060                 docstring v_align;
1061                 docstring h_align;
1062                 idocstringstream is(cmd.argument());
1063                 is >> m >> n >> v_align >> h_align;
1064                 if (m < 1)
1065                         m = 1;
1066                 if (n < 1)
1067                         n = 1;
1068                 v_align += 'c';
1069                 cur.niceInsert(MathAtom(new InsetMathArray(buffer_,
1070                         from_ascii("array"), m, n, (char)v_align[0], h_align)));
1071                 break;
1072         }
1073
1074         case LFUN_MATH_AMS_MATRIX: {
1075                 cur.recordUndo();
1076                 unsigned int m = 1;
1077                 unsigned int n = 1;
1078                 docstring name;
1079                 idocstringstream is(cmd.argument());
1080                 is >> m >> n >> name;
1081                 if (m < 1)
1082                         m = 1;
1083                 if (n < 1)
1084                         n = 1;
1085                 cur.niceInsert(
1086                         MathAtom(new InsetMathAMSArray(buffer_, name, m, n)));
1087                 break;
1088         }
1089
1090         case LFUN_MATH_DELIM: {
1091                 docstring ls;
1092                 docstring rs = split(cmd.argument(), ls, ' ');
1093                 // Reasonable default values
1094                 if (ls.empty())
1095                         ls = '(';
1096                 if (rs.empty())
1097                         rs = ')';
1098                 cur.recordUndo();
1099                 cur.handleNest(MathAtom(new InsetMathDelim(buffer_, ls, rs)));
1100                 break;
1101         }
1102
1103         case LFUN_MATH_BIGDELIM: {
1104                 docstring const lname  = from_utf8(cmd.getArg(0));
1105                 docstring const ldelim = from_utf8(cmd.getArg(1));
1106                 docstring const rname  = from_utf8(cmd.getArg(2));
1107                 docstring const rdelim = from_utf8(cmd.getArg(3));
1108                 latexkeys const * l = in_word_set(lname);
1109                 bool const have_l = l && l->inset == "big" &&
1110                                     InsetMathBig::isBigInsetDelim(ldelim);
1111                 l = in_word_set(rname);
1112                 bool const have_r = l && l->inset == "big" &&
1113                                     InsetMathBig::isBigInsetDelim(rdelim);
1114                 // We mimic LFUN_MATH_DELIM in case we have an empty left
1115                 // or right delimiter.
1116                 if (have_l || have_r) {
1117                         cur.recordUndo();
1118                         docstring const selection = grabAndEraseSelection(cur);
1119                         selClearOrDel(cur);
1120                         if (have_l)
1121                                 cur.insert(MathAtom(new InsetMathBig(lname,
1122                                                                 ldelim)));
1123                         // first insert the right delimiter and then go back
1124                         // and re-insert the selection (bug 7088)
1125                         if (have_r) {
1126                                 cur.insert(MathAtom(new InsetMathBig(rname,
1127                                                                 rdelim)));
1128                                 cur.posBackward();
1129                         }
1130                         cur.niceInsert(selection);
1131                 }
1132                 // Don't call cur.undispatched() if we did nothing, this would
1133                 // lead to infinite recursion via Text::dispatch().
1134                 break;
1135         }
1136
1137         case LFUN_SPACE_INSERT:
1138                 cur.recordUndoSelection();
1139                 cur.insert(MathAtom(new InsetMathSpace));
1140                 break;
1141
1142         case LFUN_MATH_SPACE:
1143                 cur.recordUndoSelection();
1144                 if (cmd.argument().empty())
1145                         cur.insert(MathAtom(new InsetMathSpace));
1146                 else {
1147                         string const name = cmd.getArg(0);
1148                         string const len = cmd.getArg(1);
1149                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1150                 }
1151                 break;
1152
1153         case LFUN_ERT_INSERT:
1154                 // interpret this as if a backslash was typed
1155                 cur.recordUndo();
1156                 interpretChar(cur, '\\');
1157                 break;
1158
1159         case LFUN_MATH_SUBSCRIPT:
1160                 // interpret this as if a _ was typed
1161                 cur.recordUndoSelection();
1162                 interpretChar(cur, '_');
1163                 break;
1164
1165         case LFUN_MATH_SUPERSCRIPT:
1166                 // interpret this as if a ^ was typed
1167                 cur.recordUndoSelection();
1168                 interpretChar(cur, '^');
1169                 break;
1170
1171         case LFUN_MATH_MACRO_FOLD:
1172         case LFUN_MATH_MACRO_UNFOLD: {
1173                 Cursor it = cur;
1174                 bool fold = act == LFUN_MATH_MACRO_FOLD;
1175                 bool found = findMacroToFoldUnfold(it, fold);
1176                 if (found) {
1177                         MathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1178                         cur.recordUndoInset();
1179                         if (fold)
1180                                 macro->fold(cur);
1181                         else
1182                                 macro->unfold(cur);
1183                 }
1184                 break;
1185         }
1186
1187         case LFUN_QUOTE_INSERT:
1188                 // interpret this as if a straight " was typed
1189                 cur.recordUndoSelection();
1190                 interpretChar(cur, '\"');
1191                 break;
1192
1193 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1194 // handling such that "self-insert" works on "arbitrary stuff" too, and
1195 // math-insert only handles special math things like "matrix".
1196         case LFUN_MATH_INSERT: {
1197                 cur.recordUndoSelection();
1198                 if (cmd.argument() == "^" || cmd.argument() == "_")
1199                         interpretChar(cur, cmd.argument()[0]);
1200                 else {
1201                         MathData ar;
1202                         asArray(cmd.argument(), ar);
1203                         if (cur.selection() && ar.size() == 1
1204                             && ar[0]->asNestInset()
1205                             && ar[0]->asNestInset()->nargs() > 1)
1206                                 handleNest(cur, ar[0]);
1207                         else
1208                                 cur.niceInsert(cmd.argument());
1209                 }
1210                 break;
1211         }
1212
1213         case LFUN_UNICODE_INSERT: {
1214                 if (cmd.argument().empty())
1215                         break;
1216                 docstring hexstring = cmd.argument();
1217                 if (isHex(hexstring)) {
1218                         char_type c = hexToInt(hexstring);
1219                         if (c >= 32 && c < 0x10ffff) {
1220                                 docstring s = docstring(1, c);
1221                                 FuncCode code = currentMode() == MATH_MODE ?
1222                                         LFUN_MATH_INSERT : LFUN_SELF_INSERT;
1223                                 lyx::dispatch(FuncRequest(code, s));
1224                         }
1225                 }
1226                 break;
1227         }
1228
1229         case LFUN_DIALOG_SHOW_NEW_INSET: {
1230                 docstring const & name = cmd.argument();
1231                 string data;
1232                 if (name == "ref") {
1233                         InsetMathRef tmp(buffer_, name);
1234                         data = tmp.createDialogStr();
1235                         cur.bv().showDialog(to_utf8(name), data);
1236                 } else if (name == "mathspace") {
1237                         cur.bv().showDialog(to_utf8(name));
1238                 }
1239                 break;
1240         }
1241
1242         case LFUN_INSET_INSERT: {
1243                 MathData ar;
1244                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1245                         cur.recordUndoSelection();
1246                         cur.insert(ar);
1247                         cur.forceBufferUpdate();
1248                 } else
1249                         cur.undispatched();
1250                 break;
1251         }
1252         case LFUN_INSET_DISSOLVE:
1253                 if (!asHullInset()) {
1254                         cur.recordUndoInset();
1255                         cur.pullArg();
1256                 }
1257                 break;
1258
1259         default:
1260                 InsetMath::doDispatch(cur, cmd);
1261                 break;
1262         }
1263 }
1264
1265
1266 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1267         // look for macro to open/close, but stay in mathed
1268         for (; !it.empty(); it.pop_back()) {
1269
1270                 // go backward through the current cell
1271                 Inset * inset = it.nextInset();
1272                 while (inset && inset->asInsetMath()) {
1273                         MathMacro * macro = inset->asInsetMath()->asMacro();
1274                         if (macro) {
1275                                 // found the an macro to open/close?
1276                                 if (macro->folded() != fold)
1277                                         return true;
1278
1279                                 // Wrong folding state.
1280                                 // If this was the first we see in this slice, look further left,
1281                                 // otherwise go up.
1282                                 if (inset != it.nextInset())
1283                                         break;
1284                         }
1285
1286                         // go up if this was the left most position
1287                         if (it.pos() == 0)
1288                                 break;
1289
1290                         // go left
1291                         it.pos()--;
1292                         inset = it.nextInset();
1293                 }
1294         }
1295
1296         return false;
1297 }
1298
1299
1300 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1301                 FuncStatus & flag) const
1302 {
1303         // the font related toggles
1304         //string tc = "mathnormal";
1305         bool ret = true;
1306         string const arg = to_utf8(cmd.argument());
1307         switch (cmd.action()) {
1308         case LFUN_INSET_MODIFY:
1309                 flag.setEnabled(false);
1310                 break;
1311 #if 0
1312         case LFUN_INSET_MODIFY:
1313                 // FIXME: check temporarily disabled
1314                 // valign code
1315                 char align = mathcursor::valign();
1316                 if (align == '\0') {
1317                         enable = false;
1318                         break;
1319                 }
1320                 if (cmd.argument().empty()) {
1321                         flag.clear();
1322                         break;
1323                 }
1324                 if (!contains("tcb", cmd.argument()[0])) {
1325                         enable = false;
1326                         break;
1327                 }
1328                 flag.setOnOff(cmd.argument()[0] == align);
1329                 break;
1330 #endif
1331         /// We have to handle them since 1.4 blocks all unhandled actions
1332         case LFUN_FONT_ITAL:
1333         case LFUN_FONT_BOLD:
1334         case LFUN_FONT_BOLDSYMBOL:
1335         case LFUN_FONT_SANS:
1336         case LFUN_FONT_EMPH:
1337         case LFUN_FONT_TYPEWRITER:
1338         case LFUN_FONT_NOUN:
1339         case LFUN_FONT_ROMAN:
1340         case LFUN_FONT_DEFAULT:
1341                 flag.setEnabled(true);
1342                 break;
1343
1344         // we just need to be in math mode to enable that
1345         case LFUN_MATH_SIZE:
1346         case LFUN_MATH_SPACE:
1347         case LFUN_MATH_LIMITS:
1348         case LFUN_MATH_EXTERN:
1349                 flag.setEnabled(true);
1350                 break;
1351
1352         case LFUN_FONT_UNDERLINE:
1353         case LFUN_FONT_FRAK:
1354                 flag.setEnabled(currentMode() != TEXT_MODE);
1355                 break;
1356
1357         case LFUN_MATH_FONT_STYLE: {
1358                 bool const textarg =
1359                         arg == "textbf"   || arg == "textsf" ||
1360                         arg == "textrm"   || arg == "textmd" ||
1361                         arg == "textit"   || arg == "textsc" ||
1362                         arg == "textsl"   || arg == "textup" ||
1363                         arg == "texttt"   || arg == "textbb" ||
1364                         arg == "textnormal";
1365                 flag.setEnabled(currentMode() != TEXT_MODE || textarg);
1366                 break;
1367         }
1368
1369         case LFUN_MATH_MODE:
1370                 // forbid "math-mode on" in math mode to prevent irritating
1371                 // behaviour of menu entries (bug 6709)
1372                 flag.setEnabled(currentMode() == TEXT_MODE || arg != "on");
1373                 break;
1374
1375         case LFUN_MATH_INSERT:
1376                 flag.setEnabled(currentMode() != TEXT_MODE);
1377                 break;
1378
1379         case LFUN_MATH_AMS_MATRIX:
1380         case LFUN_MATH_MATRIX:
1381                 flag.setEnabled(currentMode() == MATH_MODE);
1382                 break;
1383
1384         case LFUN_INSET_INSERT: {
1385                 // Don't test createMathInset_fromDialogStr(), since
1386                 // getStatus is not called with a valid reference and the
1387                 // dialog would not be applyable.
1388                 string const name = cmd.getArg(0);
1389                 flag.setEnabled(name == "ref" || name == "mathspace");
1390                 break;
1391         }
1392
1393         case LFUN_MATH_DELIM:
1394         case LFUN_MATH_BIGDELIM:
1395                 // Don't do this with multi-cell selections
1396                 flag.setEnabled(cur.selBegin().idx() == cur.selEnd().idx());
1397                 break;
1398
1399         case LFUN_MATH_MACRO_FOLD:
1400         case LFUN_MATH_MACRO_UNFOLD: {
1401                 Cursor it = cur;
1402                 bool found = findMacroToFoldUnfold(it, cmd.action() == LFUN_MATH_MACRO_FOLD);
1403                 flag.setEnabled(found);
1404                 break;
1405         }
1406
1407         case LFUN_SPECIALCHAR_INSERT:
1408         case LFUN_SCRIPT_INSERT:
1409                 // FIXME: These would probably make sense in math-text mode
1410                 flag.setEnabled(false);
1411                 break;
1412
1413         case LFUN_INSET_DISSOLVE:
1414                 flag.setEnabled(!asHullInset());
1415                 break;
1416
1417         default:
1418                 ret = false;
1419                 break;
1420         }
1421         return ret;
1422 }
1423
1424
1425 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1426 {
1427         cur.push(*this);
1428         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_RIGHT ||
1429                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1430         cur.idx() = enter_front ? 0 : cur.lastidx();
1431         cur.pos() = enter_front ? 0 : cur.lastpos();
1432         cur.resetAnchor();
1433         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1434 }
1435
1436
1437 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1438 {
1439         int idx_min = 0;
1440         int dist_min = 1000000;
1441         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1442                 int const d = cell(i).dist(cur.bv(), x, y);
1443                 if (d < dist_min) {
1444                         dist_min = d;
1445                         idx_min = i;
1446                 }
1447         }
1448         MathData & ar = cell(idx_min);
1449         cur.push(*this);
1450         cur.idx() = idx_min;
1451         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1452
1453         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1454         if (dist_min == 0) {
1455                 // hit inside cell
1456                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1457                         if (ar[i]->covers(cur.bv(), x, y))
1458                                 return ar[i].nucleus()->editXY(cur, x, y);
1459         }
1460         return this;
1461 }
1462
1463
1464 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1465 {
1466         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1467         BufferView & bv = cur.bv();
1468         if (cmd.button() == mouse_button::button3) {
1469                 // Don't do anything if we right-click a
1470                 // selection, a context menu will popup.
1471                 if (bv.cursor().selection() && cur >= bv.cursor().selectionBegin()
1472                       && cur < bv.cursor().selectionEnd()) {
1473                         cur.noScreenUpdate();
1474                         return;
1475                 }
1476         }
1477         bool do_selection = cmd.button() == mouse_button::button1
1478                 && cmd.argument() == "region-select";
1479         bv.mouseSetCursor(cur, do_selection);
1480         if (cmd.button() == mouse_button::button1) {
1481                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1482                 // Update the cursor update flags as needed:
1483                 //
1484                 // Update::Decoration: tells to update the decoration
1485                 //                     (visual box corners that define
1486                 //                     the inset)/
1487                 // Update::FitCursor: adjust the screen to the cursor
1488                 //                    position if needed
1489                 // cur.result().update(): don't overwrite previously set flags.
1490                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor
1491                                 | cur.result().screenUpdate());
1492         } else if (cmd.button() == mouse_button::button2) {
1493                 if (cap::selection()) {
1494                         // See comment in Text::dispatch why we do this
1495                         cap::copySelectionToStack();
1496                         cmd = FuncRequest(LFUN_PASTE, "0");
1497                         doDispatch(bv.cursor(), cmd);
1498                 } else {
1499                         MathData ar;
1500                         asArray(theSelection().get(), ar);
1501                         bv.cursor().insert(ar);
1502                 }
1503         }
1504 }
1505
1506
1507 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1508 {
1509         // only select with button 1
1510         if (cmd.button() == mouse_button::button1) {
1511                 Cursor & bvcur = cur.bv().cursor();
1512                 if (bvcur.realAnchor().hasPart(cur)) {
1513                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1514                         bvcur.setCursor(cur);
1515                         bvcur.setSelection(true);
1516                         //lyxerr << "MOTION " << bvcur << endl;
1517                 } else
1518                         cur.undispatched();
1519         }
1520 }
1521
1522
1523 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1524 {
1525         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1526
1527         if (cmd.button() == mouse_button::button1) {
1528                 if (!cur.selection())
1529                         cur.noScreenUpdate();
1530                 else {
1531                         Cursor & bvcur = cur.bv().cursor();
1532                         bvcur.setSelection(true);
1533                 }
1534                 return;
1535         }
1536
1537         cur.undispatched();
1538 }
1539
1540
1541 bool InsetMathNest::interpretChar(Cursor & cur, char_type const c)
1542 {
1543         //lyxerr << "interpret 2: '" << c << "'" << endl;
1544         docstring save_selection;
1545         if (c == '^' || c == '_')
1546                 save_selection = grabAndEraseSelection(cur);
1547
1548         cur.clearTargetX();
1549         Buffer * buf = cur.buffer();
1550
1551         // handle macroMode
1552         if (cur.inMacroMode()) {
1553                 docstring name = cur.macroName();
1554
1555                 /// are we currently typing '#1' or '#2' or...?
1556                 if (name == "\\#") {
1557                         cur.backspace();
1558                         int n = c - '0';
1559                         if (n >= 1 && n <= 9)
1560                                 cur.insert(new MathMacroArgument(n));
1561                         return true;
1562                 }
1563
1564                 // do not finish macro for known * commands
1565                 MathWordList const & mwl = mathedWordList();
1566                 bool star_macro = c == '*'
1567                         && (mwl.find(name.substr(1) + "*") != mwl.end()
1568                             || cur.buffer()->getMacro(name.substr(1) + "*", cur, true));
1569                 if (isAlphaASCII(c) || star_macro) {
1570                         cur.activeMacro()->setName(name + docstring(1, c));
1571                         return true;
1572                 }
1573
1574                 // handle 'special char' macros
1575                 if (name == "\\") {
1576                         // remove the '\\'
1577                         if (c == '\\') {
1578                                 cur.backspace();
1579                                 if (currentMode() <= InsetMath::TEXT_MODE)
1580                                         cur.niceInsert(createInsetMath("textbackslash", buf));
1581                                 else
1582                                         cur.niceInsert(createInsetMath("backslash", buf));
1583                         } else if (c == '^' && currentMode() == InsetMath::MATH_MODE) {
1584                                 cur.backspace();
1585                                 cur.niceInsert(createInsetMath("mathcircumflex", buf));
1586                         } else if (c == '{') {
1587                                 cur.backspace();
1588                                 cur.niceInsert(MathAtom(new InsetMathBrace(buf)));
1589                         } else if (c == '%') {
1590                                 cur.backspace();
1591                                 cur.niceInsert(MathAtom(new InsetMathComment(buf)));
1592                         } else if (c == '#') {
1593                                 LASSERT(cur.activeMacro(), /**/);
1594                                 cur.activeMacro()->setName(name + docstring(1, c));
1595                         } else {
1596                                 cur.backspace();
1597                                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1598                         }
1599                         return true;
1600                 }
1601
1602                 // One character big delimiters. The others are handled in
1603                 // interpretString().
1604                 latexkeys const * l = in_word_set(name.substr(1));
1605                 if (name[0] == '\\' && l && l->inset == "big") {
1606                         docstring delim;
1607                         switch (c) {
1608                         case '{':
1609                                 delim = from_ascii("\\{");
1610                                 break;
1611                         case '}':
1612                                 delim = from_ascii("\\}");
1613                                 break;
1614                         default:
1615                                 delim = docstring(1, c);
1616                                 break;
1617                         }
1618                         if (InsetMathBig::isBigInsetDelim(delim)) {
1619                                 // name + delim ared a valid InsetMathBig.
1620                                 // We can't use cur.macroModeClose() because
1621                                 // it does not handle delim.
1622                                 InsetMathUnknown * p = cur.activeMacro();
1623                                 p->finalize();
1624                                 --cur.pos();
1625                                 cur.cell().erase(cur.pos());
1626                                 cur.plainInsert(MathAtom(
1627                                         new InsetMathBig(name.substr(1), delim)));
1628                                 return true;
1629                         }
1630                 }
1631
1632                 // leave macro mode and try again if necessary
1633                 if (cur.macroModeClose()) {
1634                         MathAtom const atom = cur.prevAtom();
1635                         if (atom->asNestInset() && atom->isActive()) {
1636                                 cur.posBackward();
1637                                 cur.pushBackward(*cur.nextInset());
1638                         }
1639                 }
1640                 if (c == '{')
1641                         cur.niceInsert(MathAtom(new InsetMathBrace(buf)));
1642                 else if (c != ' ')
1643                         interpretChar(cur, c);
1644                 return true;
1645         }
1646
1647
1648         // leave autocorrect mode if necessary
1649         if (lyxrc.autocorrection_math && c == ' ' && cur.autocorrect()) {
1650                 cur.autocorrect() = false;
1651                 cur.message(_("Autocorrect Off ('!' to enter)"));
1652                 return true;
1653         }
1654         if (lyxrc.autocorrection_math && c == '!' && !cur.autocorrect()) {
1655                 cur.autocorrect() = true;
1656                 cur.message(_("Autocorrect On (<space> to exit)"));
1657                 return true;
1658         }
1659
1660         // just clear selection on pressing the space bar
1661         if (cur.selection() && c == ' ') {
1662                 cur.setSelection(false);
1663                 return true;
1664         }
1665
1666         if (c == '\\') {
1667                 //lyxerr << "starting with macro" << endl;
1668                 bool reduced = cap::reduceSelectionToOneCell(cur);
1669                 if (reduced || !cur.selection()) {
1670                         docstring const safe = cap::grabAndEraseSelection(cur);
1671                         cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1672                 }
1673                 return true;
1674         }
1675
1676         selClearOrDel(cur);
1677
1678         if (c == '\n') {
1679                 if (currentMode() <= InsetMath::TEXT_MODE)
1680                         cur.insert(c);
1681                 return true;
1682         }
1683
1684         if (c == ' ') {
1685                 if (currentMode() <= InsetMath::TEXT_MODE) {
1686                         // insert spaces in text or undecided mode,
1687                         // but suppress direct insertion of two spaces in a row
1688                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1689                         // it is better than nothing...
1690                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1691                                 cur.insert(c);
1692                                 // FIXME: we have to enable full redraw here because of the
1693                                 // visual box corners that define the inset. If we know for
1694                                 // sure that we stay within the same cell we can optimize for
1695                                 // that using:
1696                                 //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1697                         }
1698                         return true;
1699                 }
1700                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1701                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1702                         // FIXME: we have to enable full redraw here because of the
1703                         // visual box corners that define the inset. If we know for
1704                         // sure that we stay within the same cell we can optimize for
1705                         // that using:
1706                         //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1707                         return true;
1708                 }
1709
1710                 if (cur.popForward()) {
1711                         // FIXME: we have to enable full redraw here because of the
1712                         // visual box corners that define the inset. If we know for
1713                         // sure that we stay within the same cell we can optimize for
1714                         // that using:
1715                         //cur.screenUpdateFlags(Update::FitCursor);
1716                         return true;
1717                 }
1718
1719                 // if we are at the very end, leave the formula
1720                 return cur.pos() != cur.lastpos();
1721         }
1722
1723         // These should be treated differently when not in text mode:
1724         if (currentMode() != InsetMath::TEXT_MODE) {
1725                 if (c == '_') {
1726                         script(cur, false, save_selection);
1727                         return true;
1728                 }
1729                 if (c == '^') {
1730                         script(cur, true, save_selection);
1731                         return true;
1732                 }
1733                 if (c == '~') {
1734                         cur.niceInsert(createInsetMath("sim", buf));
1735                         return true;
1736                 }
1737                 if (currentMode() == InsetMath::MATH_MODE && !isAsciiOrMathAlpha(c)) {
1738                         MathAtom at = createInsetMath("text", buf);
1739                         at.nucleus()->cell(0).push_back(MathAtom(new InsetMathChar(c)));
1740                         cur.niceInsert(at);
1741                         cur.posForward();
1742                         return true;
1743                 }
1744         } else {
1745                 if (c == '^') {
1746                         cur.niceInsert(createInsetMath("textasciicircum", buf));
1747                         return true;
1748                 }
1749                 if (c == '~') {
1750                         cur.niceInsert(createInsetMath("textasciitilde", buf));
1751                         return true;
1752                 }
1753         }
1754
1755         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1756             c == '%' || c == '_') {
1757                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1758                 return true;
1759         }
1760
1761
1762         // try auto-correction
1763         if (lyxrc.autocorrection_math && cur.autocorrect() && cur.pos() != 0
1764                   && math_autocorrect(cur.prevAtom(), c))
1765                 return true;
1766
1767         // no special circumstances, so insert the character without any fuss
1768         cur.insert(c);
1769         if (lyxrc.autocorrection_math) {
1770                 if (!cur.autocorrect())
1771                         cur.message(_("Autocorrect Off ('!' to enter)"));
1772                 else
1773                         cur.message(_("Autocorrect On (<space> to exit)"));
1774         }
1775         return true;
1776 }
1777
1778
1779 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1780 {
1781         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1782         // possible
1783         if (!cur.empty() && cur.pos() > 0 &&
1784             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1785                 if (InsetMathBig::isBigInsetDelim(str)) {
1786                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1787                         if (prev[0] == '\\') {
1788                                 prev = prev.substr(1);
1789                                 latexkeys const * l = in_word_set(prev);
1790                                 if (l && l->inset == "big") {
1791                                         cur.cell()[cur.pos() - 1] =
1792                                                 MathAtom(new InsetMathBig(prev, str));
1793                                         return true;
1794                                 }
1795                         }
1796                 }
1797         }
1798         return false;
1799 }
1800
1801
1802 bool InsetMathNest::script(Cursor & cur, bool up)
1803 {
1804         return script(cur, up, docstring());
1805 }
1806
1807
1808 bool InsetMathNest::script(Cursor & cur, bool up,
1809                 docstring const & save_selection)
1810 {
1811         // Hack to get \^ and \_ working
1812         //lyxerr << "handling script: up: " << up << endl;
1813         if (cur.inMacroMode() && cur.macroName() == "\\") {
1814                 if (up)
1815                         cur.niceInsert(createInsetMath("mathcircumflex", cur.buffer()));
1816                 else
1817                         interpretChar(cur, '_');
1818                 return true;
1819         }
1820
1821         cur.macroModeClose();
1822         if (asScriptInset() && cur.idx() == 0) {
1823                 // we are in a nucleus of a script inset, move to _our_ script
1824                 InsetMathScript * inset = asScriptInset();
1825                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1826                 inset->ensure(up);
1827                 cur.idx() = inset->idxOfScript(up);
1828                 cur.pos() = 0;
1829         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1830                 --cur.pos();
1831                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1832                 cur.push(*inset);
1833                 inset->ensure(up);
1834                 cur.idx() = inset->idxOfScript(up);
1835                 cur.pos() = cur.lastpos();
1836         } else {
1837                 // convert the thing to our left to a scriptinset or create a new
1838                 // one if in the very first position of the array
1839                 if (cur.pos() == 0) {
1840                         //lyxerr << "new scriptinset" << endl;
1841                         cur.insert(new InsetMathScript(buffer_, up));
1842                 } else {
1843                         //lyxerr << "converting prev atom " << endl;
1844                         cur.prevAtom() = MathAtom(new InsetMathScript(buffer_, cur.prevAtom(), up));
1845                 }
1846                 --cur.pos();
1847                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1848                 // See comment in MathParser.cpp for special handling of {}-bases
1849
1850                 cur.push(*inset);
1851                 cur.idx() = 1;
1852                 cur.pos() = 0;
1853         }
1854         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1855         cur.niceInsert(save_selection);
1856         cur.resetAnchor();
1857         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1858         return true;
1859 }
1860
1861
1862 bool InsetMathNest::completionSupported(Cursor const & cur) const
1863 {
1864         return cur.inMacroMode();
1865 }
1866
1867
1868 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
1869 {
1870         return cur.inMacroMode();
1871 }
1872
1873
1874 bool InsetMathNest::automaticInlineCompletion() const
1875 {
1876         return lyxrc.completion_inline_math;
1877 }
1878
1879
1880 bool InsetMathNest::automaticPopupCompletion() const
1881 {
1882         return lyxrc.completion_popup_math;
1883 }
1884
1885
1886 CompletionList const *
1887 InsetMathNest::createCompletionList(Cursor const & cur) const
1888 {
1889         if (!cur.inMacroMode())
1890                 return 0;
1891
1892         return new MathCompletionList(cur);
1893 }
1894
1895
1896 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
1897 {
1898         if (!cur.inMacroMode())
1899                 return docstring();
1900
1901         return cur.activeMacro()->name();
1902 }
1903
1904
1905 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
1906                                      bool finished)
1907 {
1908         if (!cur.inMacroMode())
1909                 return false;
1910
1911         // append completion to active macro
1912         InsetMathUnknown * inset = cur.activeMacro();
1913         inset->setName(inset->name() + s);
1914
1915         // finish macro
1916         if (finished) {
1917 #if 0
1918                 // FIXME: this creates duplicates in the completion popup
1919                 // which looks ugly. Moreover the changes the list lengths
1920                 // which seems to
1921                 confuse the popup as well.
1922                 MathCompletionList::addToFavorites(inset->name());
1923 #endif
1924                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
1925         }
1926
1927         return true;
1928 }
1929
1930
1931 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
1932                                         Dimension & dim) const
1933 {
1934         Inset const * inset = cur.activeMacro();
1935         if (!inset)
1936                 return;
1937
1938         // get inset dimensions
1939         dim = cur.bv().coordCache().insets().dim(inset);
1940         // FIXME: these 3 are no accurate, but should depend on the font.
1941         // Now the popup jumps down if you enter a char with descent > 0.
1942         dim.des += 3;
1943         dim.asc += 3;
1944
1945         // and position
1946         Point xy = cur.bv().coordCache().insets().xy(inset);
1947         x = xy.x_;
1948         y = xy.y_;
1949 }
1950
1951
1952 bool InsetMathNest::cursorMathForward(Cursor & cur)
1953 {
1954         if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
1955                 cur.pushBackward(*cur.nextAtom().nucleus());
1956                 cur.inset().idxFirst(cur);
1957                 return true;
1958         }
1959         if (cur.posForward() || idxForward(cur))
1960                 return true;
1961         // try to pop forwards --- but don't pop out of math! leave that to
1962         // the FINISH lfuns
1963         int s = cur.depth() - 2;
1964         if (s >= 0 && cur[s].inset().asInsetMath())
1965                 return cur.popForward();
1966         return false;
1967 }
1968
1969
1970 bool InsetMathNest::cursorMathBackward(Cursor & cur)
1971 {
1972         if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
1973                 cur.posBackward();
1974                 cur.push(*cur.nextAtom().nucleus());
1975                 cur.inset().idxLast(cur);
1976                 return true;
1977         }
1978         if (cur.posBackward() || idxBackward(cur))
1979                 return true;
1980         // try to pop backwards --- but don't pop out of math! leave that to
1981         // the FINISH lfuns
1982         int s = cur.depth() - 2;
1983         if (s >= 0 && cur[s].inset().asInsetMath())
1984                 return cur.popBackward();
1985         return false;
1986 }
1987
1988
1989 ////////////////////////////////////////////////////////////////////
1990
1991 MathCompletionList::MathCompletionList(Cursor const & cur)
1992 {
1993         // fill it with macros from the buffer
1994         MacroNameSet macros;
1995         cur.buffer()->listMacroNames(macros);
1996         MacroNameSet::const_iterator it;
1997         for (it = macros.begin(); it != macros.end(); ++it) {
1998                 if (cur.buffer()->getMacro(*it, cur, false))
1999                         locals.push_back("\\" + *it);
2000         }
2001         sort(locals.begin(), locals.end());
2002
2003         if (globals.size() > 0)
2004                 return;
2005
2006         // fill in global macros
2007         macros.clear();
2008         MacroTable::globalMacros().getMacroNames(macros);
2009         //lyxerr << "Globals completion macros: ";
2010         for (it = macros.begin(); it != macros.end(); ++it) {
2011                 //lyxerr << "\\" + *it << " ";
2012                 globals.push_back("\\" + *it);
2013         }
2014         //lyxerr << std::endl;
2015
2016         // fill in global commands
2017         globals.push_back(from_ascii("\\boxed"));
2018         globals.push_back(from_ascii("\\fbox"));
2019         globals.push_back(from_ascii("\\framebox"));
2020         globals.push_back(from_ascii("\\makebox"));
2021         globals.push_back(from_ascii("\\kern"));
2022         globals.push_back(from_ascii("\\xrightarrow"));
2023         globals.push_back(from_ascii("\\xleftarrow"));
2024         globals.push_back(from_ascii("\\split"));
2025         globals.push_back(from_ascii("\\gathered"));
2026         globals.push_back(from_ascii("\\aligned"));
2027         globals.push_back(from_ascii("\\alignedat"));
2028         globals.push_back(from_ascii("\\cases"));
2029         globals.push_back(from_ascii("\\substack"));
2030         globals.push_back(from_ascii("\\xymatrix"));
2031         globals.push_back(from_ascii("\\Diagram"));
2032         globals.push_back(from_ascii("\\subarray"));
2033         globals.push_back(from_ascii("\\array"));
2034         globals.push_back(from_ascii("\\sqrt"));
2035         globals.push_back(from_ascii("\\root"));
2036         globals.push_back(from_ascii("\\tabular"));
2037         globals.push_back(from_ascii("\\stackrel"));
2038         globals.push_back(from_ascii("\\binom"));
2039         globals.push_back(from_ascii("\\choose"));
2040         globals.push_back(from_ascii("\\brace"));
2041         globals.push_back(from_ascii("\\brack"));
2042         globals.push_back(from_ascii("\\frac"));
2043         globals.push_back(from_ascii("\\over"));
2044         globals.push_back(from_ascii("\\nicefrac"));
2045         globals.push_back(from_ascii("\\unitfrac"));
2046         globals.push_back(from_ascii("\\unitfracthree"));
2047         globals.push_back(from_ascii("\\unitone"));
2048         globals.push_back(from_ascii("\\unittwo"));
2049         globals.push_back(from_ascii("\\infer"));
2050         globals.push_back(from_ascii("\\atop"));
2051         globals.push_back(from_ascii("\\lefteqn"));
2052         globals.push_back(from_ascii("\\boldsymbol"));
2053         globals.push_back(from_ascii("\\bm"));
2054         globals.push_back(from_ascii("\\color"));
2055         globals.push_back(from_ascii("\\normalcolor"));
2056         globals.push_back(from_ascii("\\textcolor"));
2057         globals.push_back(from_ascii("\\cfrac"));
2058         globals.push_back(from_ascii("\\cfracleft"));
2059         globals.push_back(from_ascii("\\cfracright"));
2060         globals.push_back(from_ascii("\\dfrac"));
2061         globals.push_back(from_ascii("\\tfrac"));
2062         globals.push_back(from_ascii("\\dbinom"));
2063         globals.push_back(from_ascii("\\tbinom"));
2064         globals.push_back(from_ascii("\\hphantom"));
2065         globals.push_back(from_ascii("\\phantom"));
2066         globals.push_back(from_ascii("\\vphantom"));
2067         MathWordList const & words = mathedWordList();
2068         MathWordList::const_iterator it2;
2069         //lyxerr << "Globals completion commands: ";
2070         for (it2 = words.begin(); it2 != words.end(); ++it2) {
2071                 globals.push_back("\\" + (*it2).first);
2072                 //lyxerr << "\\" + (*it2).first << " ";
2073         }
2074         //lyxerr << std::endl;
2075         sort(globals.begin(), globals.end());
2076 }
2077
2078
2079 MathCompletionList::~MathCompletionList()
2080 {
2081 }
2082
2083
2084 size_type MathCompletionList::size() const
2085 {
2086         return locals.size() + globals.size();
2087 }
2088
2089
2090 docstring const & MathCompletionList::data(size_t idx) const
2091 {
2092         size_t lsize = locals.size();
2093         if (idx >= lsize)
2094                 return globals[idx - lsize];
2095         else
2096                 return locals[idx];
2097 }
2098
2099
2100 std::string MathCompletionList::icon(size_t idx) const
2101 {
2102         // get the latex command
2103         docstring cmd;
2104         size_t lsize = locals.size();
2105         if (idx >= lsize)
2106                 cmd = globals[idx - lsize];
2107         else
2108                 cmd = locals[idx];
2109
2110         // get the icon resource name by stripping the backslash
2111         return "images/math/" + to_utf8(cmd.substr(1)) + ".png";
2112 }
2113
2114 std::vector<docstring> MathCompletionList::globals;
2115
2116 } // namespace lyx