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