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 "InsetMathMacro.h"
  36 #include "InsetMathMacroArgument.h"
  37 #include "MathParser.h"
  38 #include "MathStream.h"
  39 #include "MathSupport.h"
  40
  41 #include "Buffer.h"
  42 #include "BufferParams.h"
  43 #include "BufferView.h"
  44 #include "CoordCache.h"
  45 #include "Cursor.h"
  46 #include "CutAndPaste.h"
  47 #include "DispatchResult.h"
  48 #include "Encoding.h"
  49 #include "FuncRequest.h"
  50 #include "FuncStatus.h"
  51 #include "LaTeXFeatures.h"
  52 #include "LyX.h"
  53 #include "LyXRC.h"
  54 #include "MetricsInfo.h"
  55 #include "OutputParams.h"
  56 #include "TexRow.h"
  57 #include "Text.h"
  58
  59 #include "frontends/Application.h"
  60 #include "frontends/Clipboard.h"
  61 #include "frontends/Painter.h"
  62 #include "frontends/Selection.h"
  63
  64 #include "support/debug.h"
  65 #include "support/docstream.h"
  66 #include "support/gettext.h"
  67 #include "support/lassert.h"
  68 #include "support/lstrings.h"
  69 #include "support/textutils.h"
  70
  71 #include <algorithm>
  72 #include <sstream>
  73
  74 using namespace std;
  75 using namespace lyx::support;
  76
  77 namespace lyx {
  78
  79 using cap::copySelection;
  80 using cap::grabAndEraseSelection;
  81 using cap::cutSelection;
  82 using cap::replaceSelection;
  83 using cap::selClearOrDel;
  84
  85
  86 InsetMathNest::InsetMathNest(Buffer * buf, idx_type nargs)
  87         : InsetMath(buf), cells_(nargs), lock_(false)
  88 {
  89         setBuffer(*buf);
  90 }
  91
  92
  93 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  94         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_)
  95 {}
  96
  97
  98 InsetMathNest::~InsetMathNest()
  99 {
 100         map<BufferView const *, bool>::iterator it = mouse_hover_.begin();
 101         map<BufferView const *, bool>::iterator end = mouse_hover_.end();
 102         for (; it != end; ++it)
 103                 if (it->second)
 104                         it->first->clearLastInset(this);
 105 }
 106
 107
 108 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
 109 {
 110         cells_ = inset.cells_;
 111         lock_ = inset.lock_;
 112         mouse_hover_.clear();
 113         InsetMath::operator=(inset);
 114         return *this;
 115 }
 116
 117
 118 void InsetMathNest::setBuffer(Buffer & buffer)
 119 {
 120         InsetMath::setBuffer(buffer);
 121         for (MathData & data : cells_)
 122                 data.setBuffer(buffer);
 123 }
 124
 125
 126 InsetMath::idx_type InsetMathNest::nargs() const
 127 {
 128         return cells_.size();
 129 }
 130
 131
 132 void InsetMathNest::cursorPos(BufferView const & bv,
 133                 CursorSlice const & sl, bool /*boundary*/,
 134                 int & x, int & y) const
 135 {
 136 // FIXME: This is a hack. Ideally, the coord cache should not store
 137 // absolute positions, but relative ones. This would mean to call
 138 // setXY() not in MathData::draw(), but in the parent insets' draw()
 139 // with the correctly adjusted x,y values. But this means that we'd have
 140 // to touch all (math)inset's draw() methods. Right now, we'll store
 141 // absolute value, and make them here relative, only to make them
 142 // absolute again when actually drawing the cursor. What a mess.
 143         LASSERT(&sl.inset() == this, return);
 144         MathData const & ar = sl.cell();
 145         CoordCache const & coord_cache = bv.coordCache();
 146         if (!coord_cache.getArrays().has(&ar)) {
 147                 // this can (semi-)legally happen if we just created this cell
 148                 // and it never has been drawn before. So don't ASSERT.
 149                 //lyxerr << "no cached data for array " << &ar << endl;
 150                 x = 0;
 151                 y = 0;
 152                 return;
 153         }
 154         Point const pt = coord_cache.getArrays().xy(&ar);
 155         if (!coord_cache.getInsets().has(this)) {
 156                 // same as above
 157                 //lyxerr << "no cached data for inset " << this << endl;
 158                 x = 0;
 159                 y = 0;
 160                 return;
 161         }
 162         Point const pt2 = coord_cache.getInsets().xy(this);
 163         //lyxerr << "retrieving position cache for MathData "
 164         //      << pt.x_ << ' ' << pt.y_ << endl;
 165         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 166         y = pt.y_ - pt2.y_;
 167 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 168 //              << " asc: " << ascent() << "  des: " << descent()
 169 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 170         // move cursor visually into empty cells ("blue rectangles");
 171         if (ar.empty()) {
 172                 Dimension const dim = coord_cache.getArrays().dim(&ar);
 173                 x += dim.wid / 3;
 174         }
 175 }
 176
 177
 178 void InsetMathNest::cellsMetrics(MetricsInfo const & mi) const
 179 {
 180         MetricsInfo m = mi;
 181         for (auto const & cell : cells_) {
 182                 Dimension dim;
 183                 cell.metrics(m, dim);
 184         }
 185 }
 186
 187
 188 void InsetMathNest::updateBuffer(ParIterator const & it, UpdateType utype, bool const deleted)
 189 {
 190         for (idx_type i = 0, n = nargs(); i != n; ++i)
 191                 cell(i).updateBuffer(it, utype, deleted);
 192 }
 193
 194
 195
 196 bool InsetMathNest::idxNext(Cursor & cur) const
 197 {
 198         LASSERT(&cur.inset() == this, return false);
 199         if (cur.idx() == cur.lastidx())
 200                 return false;
 201         ++cur.idx();
 202         cur.pos() = 0;
 203         return true;
 204 }
 205
 206
 207 bool InsetMathNest::idxForward(Cursor & cur) const
 208 {
 209         return idxNext(cur);
 210 }
 211
 212
 213 bool InsetMathNest::idxPrev(Cursor & cur) const
 214 {
 215         LASSERT(&cur.inset() == this, return false);
 216         if (cur.idx() == 0)
 217                 return false;
 218         --cur.idx();
 219         cur.pos() = lyxrc.mac_like_cursor_movement ? cur.lastpos() : 0;
 220         return true;
 221 }
 222
 223
 224 bool InsetMathNest::idxBackward(Cursor & cur) const
 225 {
 226         return idxPrev(cur);
 227 }
 228
 229
 230 bool InsetMathNest::idxFirst(Cursor & cur) const
 231 {
 232         LASSERT(&cur.inset() == this, return false);
 233         if (nargs() == 0)
 234                 return false;
 235         cur.idx() = firstIdx();
 236         cur.pos() = 0;
 237         return true;
 238 }
 239
 240
 241 bool InsetMathNest::idxLast(Cursor & cur) const
 242 {
 243         LASSERT(&cur.inset() == this, return false);
 244         if (nargs() == 0)
 245                 return false;
 246         cur.idx() = lastIdx();
 247         cur.pos() = cur.lastpos();
 248         return true;
 249 }
 250
 251
 252 void InsetMathNest::dump() const
 253 {
 254         odocstringstream oss;
 255         otexrowstream ots(oss);
 256         WriteStream os(ots);
 257         os << "---------------------------------------------\n";
 258         write(os);
 259         os << "\n";
 260         for (idx_type i = 0, n = nargs(); i != n; ++i)
 261                 os << cell(i) << "\n";
 262         os << "---------------------------------------------\n";
 263         lyxerr << to_utf8(oss.str());
 264 }
 265
 266
 267 void InsetMathNest::draw(PainterInfo &, int, int) const
 268 {
 269 #if 0
 270         if (lock_)
 271                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 272                                         Color_mathlockbg);
 273 #endif
 274 }
 275
 276
 277 void InsetMathNest::validate(LaTeXFeatures & features) const
 278 {
 279         for (idx_type i = 0; i < nargs(); ++i)
 280                 cell(i).validate(features);
 281 }
 282
 283
 284 void InsetMathNest::replace(ReplaceData & rep)
 285 {
 286         for (idx_type i = 0; i < nargs(); ++i)
 287                 cell(i).replace(rep);
 288 }
 289
 290
 291 bool InsetMathNest::contains(MathData const & ar) const
 292 {
 293         for (idx_type i = 0; i < nargs(); ++i)
 294                 if (cell(i).contains(ar))
 295                         return true;
 296         return false;
 297 }
 298
 299
 300 bool InsetMathNest::lock() const
 301 {
 302         return lock_;
 303 }
 304
 305
 306 void InsetMathNest::lock(bool l)
 307 {
 308         lock_ = l;
 309 }
 310
 311
 312 bool InsetMathNest::isActive() const
 313 {
 314         return nargs() > 0;
 315 }
 316
 317
 318 MathData InsetMathNest::glue() const
 319 {
 320         MathData ar;
 321         for (size_t i = 0; i < nargs(); ++i)
 322                 ar.append(cell(i));
 323         return ar;
 324 }
 325
 326
 327 void InsetMathNest::write(WriteStream & os) const
 328 {
 329         MathEnsurer ensurer(os, currentMode() == MATH_MODE);
 330         ModeSpecifier specifier(os, currentMode(), lockedMode());
 331         docstring const latex_name = name();
 332         os << '\\' << latex_name;
 333         os.inMathClass(asClassInset());
 334         for (size_t i = 0; i < nargs(); ++i) {
 335                 Changer dummy = os.changeRowEntry(TexRow::mathEntry(id(),i));
 336                 os << '{' << cell(i) << '}';
 337         }
 338         if (nargs() == 0)
 339                 os.pendingSpace(true);
 340         if (lock_ && !os.latex()) {
 341                 os << "\\lyxlock";
 342                 os.pendingSpace(true);
 343         }
 344         os.inMathClass(false);
 345 }
 346
 347
 348 void InsetMathNest::normalize(NormalStream & os) const
 349 {
 350         os << '[' << name();
 351         for (size_t i = 0; i < nargs(); ++i)
 352                 os << ' ' << cell(i);
 353         os << ']';
 354 }
 355
 356
 357 void InsetMathNest::latex(otexstream & os, OutputParams const & runparams) const
 358 {
 359         WriteStream wi(os, runparams.moving_arg, true,
 360                         runparams.dryrun ? WriteStream::wsDryrun : WriteStream::wsDefault,
 361                         runparams.encoding);
 362         wi.strikeoutMath(runparams.inDeletedInset);
 363         if (runparams.inulemcmd) {
 364                 wi.ulemCmd(WriteStream::UNDERLINE);
 365                 if (runparams.local_font) {
 366                         FontInfo f = runparams.local_font->fontInfo();
 367                         if (f.strikeout() == FONT_ON)
 368                                 wi.ulemCmd(WriteStream::STRIKEOUT);
 369                 }
 370         }
 371         wi.canBreakLine(os.canBreakLine());
 372         Changer dummy = wi.changeRowEntry(TexRow::textEntry(runparams.lastid,
 373                                                             runparams.lastpos));
 374         write(wi);
 375         // Reset parbreak and command termination status after a math inset.
 376         os.lastChar(0);
 377         os.canBreakLine(wi.canBreakLine());
 378         os.terminateCommand(false);
 379 }
 380
 381
 382 bool InsetMathNest::setMouseHover(BufferView const * bv, bool mouse_hover)
 383         const
 384 {
 385         mouse_hover_[bv] = mouse_hover;
 386         return true;
 387 }
 388
 389
 390 bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
 391 {
 392         // FIXME: look here
 393 #if 0
 394         MathData & ar = cur.cell();
 395         // remove base-only "scripts"
 396         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 397                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 398                 if (p && p->nargs() == 1) {
 399                         MathData ar = p->nuc();
 400                         erase(i);
 401                         insert(i, ar);
 402                         cur.adjust(i, ar.size() - 1);
 403                 }
 404         }
 405
 406         // glue adjacent font insets of the same kind
 407         for (pos_type i = 0; i + 1 < size(); ++i) {
 408                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 409                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 410                 if (p && q && p->name() == q->name()) {
 411                         p->cell(0).append(q->cell(0));
 412                         erase(i + 1);
 413                         cur.adjust(i, -1);
 414                 }
 415         }
 416 #endif
 417         return false;
 418 }
 419
 420
 421 void InsetMathNest::handleFont
 422         (Cursor & cur, docstring const & arg, char const * const font)
 423 {
 424         handleFont(cur, arg, from_ascii(font));
 425 }
 426
 427
 428 void InsetMathNest::handleFont(Cursor & cur, docstring const & arg,
 429         docstring const & font)
 430 {
 431         cur.recordUndoSelection();
 432
 433         // this whole function is a hack and won't work for incremental font
 434         // changes...
 435         if (cur.inset().asInsetMath()->name() == font)
 436                 cur.handleFont(to_utf8(font));
 437         else
 438                 handleNest(cur, createInsetMath(font, cur.buffer()), arg);
 439 }
 440
 441
 442 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest)
 443 {
 444         handleNest(cur, nest, docstring());
 445 }
 446
 447
 448 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest,
 449         docstring const & arg)
 450 {
 451         CursorSlice i1 = cur.selBegin();
 452         CursorSlice i2 = cur.selEnd();
 453         if (!i1.inset().asInsetMath())
 454                 return;
 455         if (i1.idx() == i2.idx()) {
 456                 // the easy case where only one cell is selected
 457                 cur.handleNest(nest);
 458                 cur.insert(arg);
 459                 return;
 460         }
 461
 462         // multiple selected cells in a simple non-grid inset
 463         if (i1.asInsetMath()->nrows() == 0 || i1.asInsetMath()->ncols() == 0) {
 464                 for (idx_type i = i1.idx(); i <= i2.idx(); ++i) {
 465                         // select cell
 466                         cur.idx() = i;
 467                         cur.pos() = 0;
 468                         cur.resetAnchor();
 469                         cur.pos() = cur.lastpos();
 470                         cur.setSelection();
 471
 472                         // change font of cell
 473                         cur.handleNest(nest);
 474                         cur.insert(arg);
 475
 476                         // cur is in the font inset now. If the loop continues,
 477                         // we need to get outside again for the next cell
 478                         if (i + 1 <= i2.idx())
 479                                 cur.pop_back();
 480                 }
 481                 return;
 482         }
 483
 484         // the complicated case with multiple selected cells in a grid
 485         row_type r1, r2;
 486         col_type c1, c2;
 487         cap::region(i1, i2, r1, r2, c1, c2);
 488         for (row_type row = r1; row <= r2; ++row) {
 489                 for (col_type col = c1; col <= c2; ++col) {
 490                         // select cell
 491                         cur.idx() = i1.asInsetMath()->index(row, col);
 492                         cur.pos() = 0;
 493                         cur.resetAnchor();
 494                         cur.pos() = cur.lastpos();
 495                         cur.setSelection();
 496
 497                         //
 498                         cur.handleNest(nest);
 499                         cur.insert(arg);
 500
 501                         // cur is in the font inset now. If the loop continues,
 502                         // we need to get outside again for the next cell
 503                         if (col + 1 <= c2 || row + 1 <= r2)
 504                                 cur.pop_back();
 505                 }
 506         }
 507 }
 508
 509
 510 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 511 {
 512         cur.recordUndoSelection();
 513         Font font;
 514         bool b;
 515         font.fromString(to_utf8(arg), b);
 516         if (font.fontInfo().color() != Color_inherit &&
 517             font.fontInfo().color() != Color_ignore)
 518                 handleNest(cur, MathAtom(new InsetMathColor(buffer_, true, font.fontInfo().color())));
 519
 520         // FIXME: support other font changes here as well?
 521 }
 522
 523 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 524 {
 525         //LYXERR0("InsetMathNest: request: " << cmd);
 526
 527         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
 528
 529         FuncCode const act = cmd.action();
 530         switch (act) {
 531
 532         case LFUN_CLIPBOARD_PASTE:
 533                 parseflg |= Parse::VERBATIM;
 534                 // fall through
 535         case LFUN_PASTE: {
 536                 if (cur.currentMode() != MATH_MODE)
 537                         parseflg |= Parse::TEXTMODE;
 538                 cur.recordUndoSelection();
 539                 cur.message(_("Paste"));
 540                 replaceSelection(cur);
 541                 docstring topaste;
 542                 if (cmd.argument().empty() && !theClipboard().isInternal())
 543                         topaste = theClipboard().getAsText(frontend::Clipboard::PlainTextType);
 544                 else {
 545                         size_t n = 0;
 546                         idocstringstream is(cmd.argument());
 547                         is >> n;
 548                         topaste = cap::selection(n, buffer().params().documentClassPtr());
 549                 }
 550                 cur.niceInsert(topaste, parseflg, false);
 551                 cur.clearSelection(); // bug 393
 552                 cur.forceBufferUpdate();
 553                 cur.finishUndo();
 554                 break;
 555         }
 556
 557         case LFUN_CUT:
 558                 cur.recordUndo();
 559                 cutSelection(cur, true);
 560                 cur.message(_("Cut"));
 561                 // Prevent stale position >= size crash
 562                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 563                 cur.normalize();
 564                 cur.forceBufferUpdate();
 565                 break;
 566
 567         case LFUN_COPY:
 568                 copySelection(cur);
 569                 cur.message(_("Copy"));
 570                 break;
 571
 572         case LFUN_MOUSE_PRESS:
 573                 lfunMousePress(cur, cmd);
 574                 break;
 575
 576         case LFUN_MOUSE_MOTION:
 577                 lfunMouseMotion(cur, cmd);
 578                 break;
 579
 580         case LFUN_MOUSE_RELEASE:
 581                 lfunMouseRelease(cur, cmd);
 582                 break;
 583
 584         case LFUN_FINISHED_LEFT: // in math, left is backwards
 585         case LFUN_FINISHED_BACKWARD:
 586                 cur.bv().cursor() = cur;
 587                 break;
 588
 589         case LFUN_FINISHED_RIGHT: // in math, right is forward
 590         case LFUN_FINISHED_FORWARD:
 591                 ++cur.pos();
 592                 cur.bv().cursor() = cur;
 593                 break;
 594
 595         case LFUN_WORD_RIGHT:
 596         case LFUN_WORD_LEFT:
 597         case LFUN_WORD_BACKWARD:
 598         case LFUN_WORD_FORWARD:
 599         case LFUN_CHAR_RIGHT:
 600         case LFUN_CHAR_LEFT:
 601         case LFUN_CHAR_BACKWARD:
 602         case LFUN_CHAR_FORWARD:
 603                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 604                 // fall through
 605         case LFUN_WORD_RIGHT_SELECT:
 606         case LFUN_WORD_LEFT_SELECT:
 607         case LFUN_WORD_BACKWARD_SELECT:
 608         case LFUN_WORD_FORWARD_SELECT:
 609         case LFUN_CHAR_RIGHT_SELECT:
 610         case LFUN_CHAR_LEFT_SELECT:
 611         case LFUN_CHAR_BACKWARD_SELECT:
 612         case LFUN_CHAR_FORWARD_SELECT: {
 613                 // are we in a selection?
 614                 bool select = (act == LFUN_WORD_RIGHT_SELECT
 615                                            || act == LFUN_WORD_LEFT_SELECT
 616                                            || act == LFUN_WORD_BACKWARD_SELECT
 617                                            || act == LFUN_WORD_FORWARD_SELECT
 618                                || act == LFUN_CHAR_RIGHT_SELECT
 619                                            || act == LFUN_CHAR_LEFT_SELECT
 620                                            || act == LFUN_CHAR_BACKWARD_SELECT
 621                                            || act == LFUN_CHAR_FORWARD_SELECT);
 622                 // select words
 623                 bool word = (act == LFUN_WORD_RIGHT_SELECT
 624                              || act == LFUN_WORD_LEFT_SELECT
 625                              || act == LFUN_WORD_BACKWARD_SELECT
 626                              || act == LFUN_WORD_FORWARD_SELECT
 627                              || act == LFUN_WORD_RIGHT
 628                              || act == LFUN_WORD_LEFT
 629                              || act == LFUN_WORD_BACKWARD
 630                              || act == LFUN_WORD_FORWARD);
 631                 // are we moving forward or backwards?
 632                 // If the command was RIGHT or LEFT, then whether we're moving forward
 633                 // or backwards depends on the cursor movement mode (logical or visual):
 634                 //  * in visual mode, since math is always LTR, right -> forward,
 635                 //    left -> backwards
 636                 //  * in logical mode, the mapping is determined by the
 637                 //    reverseDirectionNeeded() function
 638
 639                 bool forward;
 640                 FuncCode finish_lfun;
 641
 642                 if (act == LFUN_CHAR_FORWARD
 643                     || act == LFUN_CHAR_FORWARD_SELECT
 644                     || act == LFUN_WORD_FORWARD
 645                     || act == LFUN_WORD_FORWARD_SELECT) {
 646                         forward = true;
 647                         finish_lfun = LFUN_FINISHED_FORWARD;
 648                 }
 649                 else if (act == LFUN_CHAR_BACKWARD
 650                          || act == LFUN_CHAR_BACKWARD_SELECT
 651                          || act == LFUN_WORD_BACKWARD
 652                          || act == LFUN_WORD_BACKWARD_SELECT) {
 653                         forward = false;
 654                         finish_lfun = LFUN_FINISHED_BACKWARD;
 655                 }
 656                 else {
 657                         bool right = (act == LFUN_CHAR_RIGHT_SELECT
 658                                                   || act == LFUN_CHAR_RIGHT
 659                                       || act == LFUN_WORD_RIGHT_SELECT
 660                                       || act == LFUN_WORD_RIGHT);
 661                         if (lyxrc.visual_cursor || !cur.reverseDirectionNeeded())
 662                                 forward = right;
 663                         else
 664                                 forward = !right;
 665
 666                         if (right)
 667                                 finish_lfun = LFUN_FINISHED_RIGHT;
 668                         else
 669                                 finish_lfun = LFUN_FINISHED_LEFT;
 670                 }
 671                 // Now that we know exactly what we want to do, let's do it!
 672                 cur.selHandle(select);
 673                 cur.clearTargetX();
 674                 cur.macroModeClose();
 675                 // try moving forward or backwards as necessary...
 676                 if (!(forward ? cur.mathForward(word) : cur.mathBackward(word))) {
 677                         // ... and if movement failed, then finish forward or backwards
 678                         // as necessary
 679                         cmd = FuncRequest(finish_lfun);
 680                         cur.undispatched();
 681                 }
 682                 break;
 683         }
 684
 685         case LFUN_DOWN:
 686         case LFUN_UP:
 687         case LFUN_PARAGRAPH_UP:
 688         case LFUN_PARAGRAPH_DOWN:
 689                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 690                 // fall through
 691         case LFUN_DOWN_SELECT:
 692         case LFUN_UP_SELECT:
 693         case LFUN_PARAGRAPH_UP_SELECT:
 694         case LFUN_PARAGRAPH_DOWN_SELECT: {
 695                 // close active macro
 696                 if (cur.inMacroMode()) {
 697                         cur.macroModeClose();
 698                         break;
 699                 }
 700
 701                 // stop/start the selection
 702                 bool select = act == LFUN_DOWN_SELECT
 703                         || act == LFUN_UP_SELECT
 704                         || act == LFUN_PARAGRAPH_DOWN_SELECT
 705                         || act == LFUN_PARAGRAPH_UP_SELECT;
 706                 cur.selHandle(select);
 707
 708                 // go up/down
 709                 bool up = act == LFUN_UP || act == LFUN_UP_SELECT
 710                         || act == LFUN_PARAGRAPH_UP || act == LFUN_PARAGRAPH_UP_SELECT;
 711                 bool successful = cur.upDownInMath(up);
 712                 if (successful)
 713                         break;
 714
 715                 if (cur.fixIfBroken())
 716                         // FIXME: Something bad happened. We pass the corrected Cursor
 717                         // instead of letting things go worse.
 718                         break;
 719
 720                 // We did not manage to move the cursor.
 721                 cur.undispatched();
 722                 break;
 723         }
 724
 725         case LFUN_MOUSE_DOUBLE:
 726         case LFUN_WORD_SELECT:
 727                 cur.pos() = 0;
 728                 cur.bv().mouseSetCursor(cur);
 729                 cur.pos() = cur.lastpos();
 730                 cur.bv().mouseSetCursor(cur, true);
 731                 break;
 732
 733         case LFUN_MOUSE_TRIPLE:
 734                 cur.idx() = 0;
 735                 cur.pos() = 0;
 736                 cur.bv().mouseSetCursor(cur);
 737                 cur.idx() = cur.lastidx();
 738                 cur.pos() = cur.lastpos();
 739                 cur.bv().mouseSetCursor(cur, true);
 740                 break;
 741
 742         case LFUN_LINE_BEGIN:
 743                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 744                 // fall through
 745         case LFUN_LINE_BEGIN_SELECT:
 746                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
 747                                 act == LFUN_WORD_LEFT_SELECT ||
 748                                 act == LFUN_LINE_BEGIN_SELECT);
 749                 cur.macroModeClose();
 750                 if (cur.pos() != 0) {
 751                         cur.pos() = 0;
 752                 } else if (cur.col() != 0) {
 753                         cur.idx() -= cur.col();
 754                         cur.pos() = 0;
 755                 } else if (cur.idx() != 0) {
 756                         cur.idx() = 0;
 757                         cur.pos() = 0;
 758                 } else {
 759                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 760                         cur.undispatched();
 761                 }
 762                 break;
 763
 764         case LFUN_LINE_END:
 765                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 766                 // fall through
 767         case LFUN_LINE_END_SELECT:
 768                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
 769                                 act == LFUN_WORD_RIGHT_SELECT ||
 770                                 act == LFUN_LINE_END_SELECT);
 771                 cur.macroModeClose();
 772                 cur.clearTargetX();
 773                 if (cur.pos() != cur.lastpos()) {
 774                         cur.pos() = cur.lastpos();
 775                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 776                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 777                         cur.pos() = cur.lastpos();
 778                 } else if (cur.idx() != cur.lastidx()) {
 779                         cur.idx() = cur.lastidx();
 780                         cur.pos() = cur.lastpos();
 781                 } else {
 782                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 783                         cur.undispatched();
 784                 }
 785                 break;
 786
 787         case LFUN_CELL_FORWARD:
 788                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 789                 cur.selHandle(false);
 790                 cur.clearTargetX();
 791                 cur.macroModeClose();
 792                 if (!cur.inset().idxNext(cur)) {
 793                         cur.idx() = firstIdx();
 794                         cur.pos() = 0;
 795                 }
 796                 break;
 797
 798         case LFUN_CELL_BACKWARD:
 799                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 800                 cur.selHandle(false);
 801                 cur.clearTargetX();
 802                 cur.macroModeClose();
 803                 if (!cur.inset().idxPrev(cur)) {
 804                         cur.idx() = lastIdx();
 805                         cur.pos() = lyxrc.mac_like_cursor_movement ? cur.lastpos() : 0;
 806                 }
 807                 break;
 808
 809         case LFUN_WORD_DELETE_BACKWARD:
 810         case LFUN_CHAR_DELETE_BACKWARD:
 811                 if (cur.pos() == 0)
 812                         // May affect external cell:
 813                         cur.recordUndoInset();
 814                 else if (!cur.inMacroMode())
 815                         cur.recordUndoSelection();
 816                 // if the inset can not be removed from within, delete it
 817                 if (!cur.backspace(cmd.getArg(0) == "force")) {
 818                         FuncRequest newcmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD, "force");
 819                         cur.innerText()->dispatch(cur, newcmd);
 820                 }
 821                 break;
 822
 823         case LFUN_WORD_DELETE_FORWARD:
 824         case LFUN_CHAR_DELETE_FORWARD:
 825                 if (cur.pos() == cur.lastpos())
 826                         // May affect external cell:
 827                         cur.recordUndoInset();
 828                 else
 829                         cur.recordUndoSelection();
 830                 // if the inset can not be removed from within, delete it
 831                 if (!cur.erase(cmd.getArg(0) == "force")) {
 832                         FuncRequest newcmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD, "force");
 833                         cur.innerText()->dispatch(cur, newcmd);
 834                 }
 835                 break;
 836
 837         case LFUN_ESCAPE:
 838                 if (cur.selection())
 839                         cur.clearSelection();
 840                 else  {
 841                         if (cur.inMacroMode())
 842                                 cur.macroModeClose(true);
 843                         else {
 844                                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 845                                 cur.undispatched();
 846                         }
 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                 // special case first for big delimiters
 860                 if (cmd.argument().size() != 1 && interpretString(cur, cmd.argument()))
 861                         break;
 862
 863                 for (char_type c : cmd.argument()) {
 864                         // Don't record undo steps if we are in macro mode and thus
 865                         // cmd.argument is the next character of the macro name.
 866                         // Otherwise we'll get an invalid cursor if we undo after
 867                         // the macro was finished and the macro is a known command,
 868                         // e.g. sqrt. Cursor::macroModeClose replaces in this case
 869                         // the InsetMathUnknown with name "frac" by an empty
 870                         // InsetMathFrac -> a pos value > 0 is invalid.
 871                         // A side effect is that an undo before the macro is finished
 872                         // undoes the complete macro, not only the last character.
 873                         // At the time we hit '\' we are not in macro mode, still.
 874                         if (!cur.inMacroMode())
 875                                 cur.recordUndoSelection();
 876
 877                         // special handling of space. If we insert an inset
 878                         // via macro mode, we want to put the cursor inside it
 879                         // if relevant. Think typing "\frac<space>".
 880                         if (c == ' '
 881                             && cur.inMacroMode() && cur.macroName() != "\\"
 882                             && cur.macroModeClose() && cur.pos() > 0)
 883                                 cur.editInsertedInset();
 884                         else if (!interpretChar(cur, c)) {
 885                                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 886                                 cur.undispatched();
 887                                 // FIXME: can we avoid skipping the end of the string?
 888                                 break;
 889                         }
 890                 }
 891                 break;
 892
 893         //case LFUN_SERVER_GET_XY:
 894         //      break;
 895
 896         case LFUN_SERVER_SET_XY: {
 897                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 898                 int x = 0;
 899                 int y = 0;
 900                 istringstream is(to_utf8(cmd.argument()));
 901                 is >> x >> y;
 902                 cur.setTargetX(x);
 903                 break;
 904         }
 905
 906         // Special casing for superscript in case of LyX handling
 907         // dead-keys:
 908         case LFUN_ACCENT_CIRCUMFLEX:
 909                 if (cmd.argument().empty()) {
 910                         // do superscript if LyX handles
 911                         // deadkeys
 912                         cur.recordUndoSelection();
 913                         script(cur, true, grabAndEraseSelection(cur));
 914                 }
 915                 break;
 916
 917         case LFUN_ACCENT_UMLAUT:
 918         case LFUN_ACCENT_ACUTE:
 919         case LFUN_ACCENT_GRAVE:
 920         case LFUN_ACCENT_BREVE:
 921         case LFUN_ACCENT_DOT:
 922         case LFUN_ACCENT_MACRON:
 923         case LFUN_ACCENT_CARON:
 924         case LFUN_ACCENT_TILDE:
 925         case LFUN_ACCENT_CEDILLA:
 926         case LFUN_ACCENT_CIRCLE:
 927         case LFUN_ACCENT_UNDERDOT:
 928         case LFUN_ACCENT_TIE:
 929         case LFUN_ACCENT_OGONEK:
 930         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 931                 break;
 932
 933         //  Math fonts
 934         case LFUN_TEXTSTYLE_APPLY:
 935         case LFUN_TEXTSTYLE_UPDATE:
 936                 handleFont2(cur, cmd.argument());
 937                 break;
 938
 939         case LFUN_FONT_BOLD:
 940                 if (currentMode() != MATH_MODE)
 941                         handleFont(cur, cmd.argument(), "textbf");
 942                 else
 943                         handleFont(cur, cmd.argument(), "mathbf");
 944                 break;
 945         case LFUN_FONT_BOLDSYMBOL:
 946                 if (currentMode() != MATH_MODE)
 947                         handleFont(cur, cmd.argument(), "textbf");
 948                 else
 949                         handleFont(cur, cmd.argument(), "boldsymbol");
 950                 break;
 951         case LFUN_FONT_SANS:
 952                 if (currentMode() != MATH_MODE)
 953                         handleFont(cur, cmd.argument(), "textsf");
 954                 else
 955                         handleFont(cur, cmd.argument(), "mathsf");
 956                 break;
 957         case LFUN_FONT_EMPH:
 958                 if (currentMode() != MATH_MODE)
 959                         handleFont(cur, cmd.argument(), "emph");
 960                 else
 961                         handleFont(cur, cmd.argument(), "mathcal");
 962                 break;
 963         case LFUN_FONT_ROMAN:
 964                 if (currentMode() != MATH_MODE)
 965                         handleFont(cur, cmd.argument(), "textrm");
 966                 else
 967                         handleFont(cur, cmd.argument(), "mathrm");
 968                 break;
 969         case LFUN_FONT_TYPEWRITER:
 970                 if (currentMode() != MATH_MODE)
 971                         handleFont(cur, cmd.argument(), "texttt");
 972                 else
 973                         handleFont(cur, cmd.argument(), "mathtt");
 974                 break;
 975         case LFUN_FONT_FRAK:
 976                 handleFont(cur, cmd.argument(), "mathfrak");
 977                 break;
 978         case LFUN_FONT_ITAL:
 979                 if (currentMode() != MATH_MODE)
 980                         handleFont(cur, cmd.argument(), "textit");
 981                 else
 982                         handleFont(cur, cmd.argument(), "mathit");
 983                 break;
 984         case LFUN_FONT_NOUN:
 985                 if (currentMode() != MATH_MODE)
 986                         // FIXME: should be "noun"
 987                         handleFont(cur, cmd.argument(), "textsc");
 988                 else
 989                         handleFont(cur, cmd.argument(), "mathbb");
 990                 break;
 991         case LFUN_FONT_DEFAULT:
 992                 handleFont(cur, cmd.argument(), "textnormal");
 993                 break;
 994         case LFUN_FONT_UNDERLINE:
 995                 cur.recordUndo();
 996                 cur.handleNest(createInsetMath("underline", cur.buffer()));
 997                 break;
 998
 999         case LFUN_MATH_MODE: {
1000 #if 1
1001                 // ignore math-mode on when already in math mode
1002                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
1003                         break;
1004                 cur.recordUndoSelection();
1005                 cur.macroModeClose();
1006                 docstring const save_selection = grabAndEraseSelection(cur);
1007                 selClearOrDel(cur);
1008                 if (currentMode() != Inset::MATH_MODE)
1009                         cur.plainInsert(MathAtom(new InsetMathEnsureMath(buffer_)));
1010                 else
1011                         cur.plainInsert(createInsetMath("text", buffer_));
1012                 cur.posBackward();
1013                 cur.pushBackward(*cur.nextInset());
1014                 cur.niceInsert(save_selection);
1015                 cur.forceBufferUpdate();
1016 #else
1017                 if (currentMode() == Inset::TEXT_MODE) {
1018                         cur.recordUndoSelection();
1019                         cur.niceInsert(MathAtom(new InsetMathHull("simple", cur.buffer())));
1020                         cur.message(_("create new math text environment ($...$)"));
1021                 } else {
1022                         handleFont(cur, cmd.argument(), "textrm");
1023                         cur.message(_("entered math text mode (textrm)"));
1024                 }
1025 #endif
1026                 break;
1027         }
1028
1029         case LFUN_REGEXP_MODE: {
1030                 InsetMath * im = cur.inset().asInsetMath();
1031                 if (im) {
1032                         InsetMathHull * i = im->asHullInset();
1033                         if (i && i->getType() == hullRegexp) {
1034                                 cur.message(_("Already in regular expression mode"));
1035                                 break;
1036                         }
1037                 }
1038                 cur.macroModeClose();
1039                 docstring const save_selection = grabAndEraseSelection(cur);
1040                 selClearOrDel(cur);
1041                 cur.plainInsert(MathAtom(new InsetMathHull(buffer_, hullRegexp)));
1042                 cur.posBackward();
1043                 cur.pushBackward(*cur.nextInset());
1044                 cur.niceInsert(save_selection);
1045                 cur.message(_("Regular expression editor mode"));
1046                 break;
1047         }
1048
1049         case LFUN_MATH_FONT_STYLE: {
1050                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, '\\' + cmd.argument());
1051                 doDispatch(cur, fr);
1052                 break;
1053         }
1054
1055         case LFUN_MATH_SIZE: {
1056                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, cmd.argument());
1057                 doDispatch(cur, fr);
1058                 break;
1059         }
1060
1061         case LFUN_MATH_MATRIX: {
1062                 cur.recordUndo();
1063                 unsigned int m = 1;
1064                 unsigned int n = 1;
1065                 docstring v_align;
1066                 docstring h_align;
1067                 idocstringstream is(cmd.argument());
1068                 is >> m >> n >> v_align >> h_align;
1069                 if (m < 1)
1070                         m = 1;
1071                 if (n < 1)
1072                         n = 1;
1073                 v_align += 'c';
1074                 cur.niceInsert(MathAtom(new InsetMathArray(buffer_,
1075                         from_ascii("array"), m, n, (char)v_align[0], h_align)));
1076                 break;
1077         }
1078
1079         case LFUN_MATH_AMS_MATRIX: {
1080                 cur.recordUndo();
1081                 unsigned int m = 1;
1082                 unsigned int n = 1;
1083                 docstring name = from_ascii("matrix");
1084                 idocstringstream is(cmd.argument());
1085                 is >> m >> n >> name;
1086                 if (m < 1)
1087                         m = 1;
1088                 if (n < 1)
1089                         n = 1;
1090                 // check if we have a valid decoration
1091                 if (name != "pmatrix" && name != "bmatrix"
1092                         && name != "Bmatrix" && name != "vmatrix"
1093                         && name != "Vmatrix" && name != "matrix"
1094                         && name != "smallmatrix")
1095                         name = from_ascii("matrix");
1096
1097                 cur.niceInsert(
1098                         MathAtom(new InsetMathAMSArray(buffer_, name, m, n)));
1099                 break;
1100         }
1101
1102         case LFUN_MATH_DELIM: {
1103                 docstring ls;
1104                 docstring rs = split(cmd.argument(), ls, ' ');
1105                 // Reasonable default values
1106                 if (ls.empty())
1107                         ls = '(';
1108                 if (rs.empty())
1109                         rs = ')';
1110                 cur.recordUndo();
1111                 cur.handleNest(MathAtom(new InsetMathDelim(buffer_, ls, rs)));
1112                 break;
1113         }
1114
1115         case LFUN_MATH_BIGDELIM: {
1116                 docstring const lname  = from_utf8(cmd.getArg(0));
1117                 docstring const ldelim = from_utf8(cmd.getArg(1));
1118                 docstring const rname  = from_utf8(cmd.getArg(2));
1119                 docstring const rdelim = from_utf8(cmd.getArg(3));
1120                 latexkeys const * l = in_word_set(lname);
1121                 bool const have_l = l && l->inset == "big" &&
1122                                     InsetMathBig::isBigInsetDelim(ldelim);
1123                 l = in_word_set(rname);
1124                 bool const have_r = l && l->inset == "big" &&
1125                                     InsetMathBig::isBigInsetDelim(rdelim);
1126                 // We mimic LFUN_MATH_DELIM in case we have an empty left
1127                 // or right delimiter.
1128                 if (have_l || have_r) {
1129                         cur.recordUndo();
1130                         docstring const selection = grabAndEraseSelection(cur);
1131                         selClearOrDel(cur);
1132                         if (have_l)
1133                                 cur.insert(MathAtom(new InsetMathBig(lname,
1134                                                                 ldelim)));
1135                         // first insert the right delimiter and then go back
1136                         // and re-insert the selection (bug 7088)
1137                         if (have_r) {
1138                                 cur.insert(MathAtom(new InsetMathBig(rname,
1139                                                                 rdelim)));
1140                                 cur.posBackward();
1141                         }
1142                         cur.niceInsert(selection);
1143                 }
1144                 // Don't call cur.undispatched() if we did nothing, this would
1145                 // lead to infinite recursion via Text::dispatch().
1146                 break;
1147         }
1148
1149         case LFUN_SPACE_INSERT: {
1150                 cur.recordUndoSelection();
1151                 string const name = cmd.getArg(0);
1152                 if (name == "normal")
1153                         cur.insert(MathAtom(new InsetMathSpace(" ", "")));
1154                 else if (name == "protected")
1155                         cur.insert(MathAtom(new InsetMathSpace("~", "")));
1156                 else if (name == "thin" || name == "med" || name == "thick")
1157                         cur.insert(MathAtom(new InsetMathSpace(name + "space", "")));
1158                 else if (name == "hfill*")
1159                         cur.insert(MathAtom(new InsetMathSpace("hspace*{\\fill}", "")));
1160                 else if (name == "quad" || name == "qquad" ||
1161                          name == "enspace" || name == "enskip" ||
1162                          name == "negthinspace" || name == "negmedspace" ||
1163                          name == "negthickspace" || name == "hfill")
1164                         cur.insert(MathAtom(new InsetMathSpace(name, "")));
1165                 else if (name == "hspace" || name == "hspace*") {
1166                         string const len = cmd.getArg(1);
1167                         if (len.empty() || !isValidLength(len)) {
1168                                 lyxerr << "LyX function 'space-insert " << name << "' "
1169                                           "needs a valid length argument." << endl;
1170                                 break;
1171                         }
1172                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1173                 } else
1174                         cur.insert(MathAtom(new InsetMathSpace));
1175                 break;
1176         }
1177
1178         case LFUN_MATH_SPACE:
1179                 cur.recordUndoSelection();
1180                 if (cmd.argument().empty())
1181                         cur.insert(MathAtom(new InsetMathSpace));
1182                 else {
1183                         string const name = cmd.getArg(0);
1184                         string const len = cmd.getArg(1);
1185                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1186                 }
1187                 break;
1188
1189         case LFUN_ERT_INSERT:
1190                 // interpret this as if a backslash was typed
1191                 cur.recordUndo();
1192                 interpretChar(cur, '\\');
1193                 break;
1194
1195         case LFUN_MATH_SUBSCRIPT:
1196                 // interpret this as if a _ was typed
1197                 cur.recordUndoSelection();
1198                 interpretChar(cur, '_');
1199                 break;
1200
1201         case LFUN_MATH_SUPERSCRIPT:
1202                 // interpret this as if a ^ was typed
1203                 cur.recordUndoSelection();
1204                 interpretChar(cur, '^');
1205                 break;
1206
1207         case LFUN_MATH_MACRO_FOLD:
1208         case LFUN_MATH_MACRO_UNFOLD: {
1209                 Cursor it = cur;
1210                 bool fold = act == LFUN_MATH_MACRO_FOLD;
1211                 bool found = findMacroToFoldUnfold(it, fold);
1212                 if (found) {
1213                         InsetMathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1214                         cur.recordUndoInset();
1215                         if (fold)
1216                                 macro->fold(cur);
1217                         else
1218                                 macro->unfold(cur);
1219                 }
1220                 break;
1221         }
1222
1223         case LFUN_QUOTE_INSERT:
1224                 // interpret this as if a straight " was typed
1225                 cur.recordUndoSelection();
1226                 interpretChar(cur, '\"');
1227                 break;
1228
1229 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1230 // handling such that "self-insert" works on "arbitrary stuff" too, and
1231 // math-insert only handles special math things like "matrix".
1232         case LFUN_MATH_INSERT: {
1233                 cur.recordUndoSelection();
1234                 if (cmd.argument() == "^" || cmd.argument() == "_")
1235                         interpretChar(cur, cmd.argument()[0]);
1236                 else if (!cur.selection())
1237                         cur.niceInsert(cmd.argument());
1238                 else {
1239                         MathData ar(cur.buffer());
1240                         asArray(cmd.argument(), ar);
1241                         if (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_DIALOG_SHOW_NEW_INSET: {
1252                 docstring const & name = cmd.argument();
1253                 string data;
1254                 if (name == "ref") {
1255                         InsetMathRef tmp(buffer_, name);
1256                         data = tmp.createDialogStr();
1257                         cur.bv().showDialog(to_utf8(name), data);
1258                 } else if (name == "mathspace") {
1259                         cur.bv().showDialog(to_utf8(name));
1260                 }
1261                 break;
1262         }
1263
1264         case LFUN_INSET_INSERT: {
1265                 MathData ar;
1266                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1267                         cur.recordUndoSelection();
1268                         cur.insert(ar);
1269                         cur.forceBufferUpdate();
1270                 } else
1271                         cur.undispatched();
1272                 break;
1273         }
1274         case LFUN_INSET_DISSOLVE:
1275                 if (!asHullInset()) {
1276                         cur.recordUndoInset();
1277                         cur.pullArg();
1278                 }
1279                 break;
1280
1281         case LFUN_MATH_LIMITS: {
1282                 InsetMath * in = 0;
1283                 if (cur.pos() < cur.lastpos() && cur.nextMath().allowsLimitsChange())
1284                         in = &cur.nextMath();
1285                 else if (cur.pos() > 0 && cur.prevMath().allowsLimitsChange())
1286                         in = &cur.prevMath();
1287                 else if (cur.lastpos() > 0 && cur.cell().back()->allowsLimitsChange())
1288                         in = cur.cell().back().nucleus();
1289                 // only when nucleus allows this
1290                 if (!in)
1291                         return;
1292                 cur.recordUndoInset();
1293                 if (!cmd.argument().empty()) {
1294                         if (cmd.argument() == "limits")
1295                                 in->limits(LIMITS);
1296                         else if (cmd.argument() == "nolimits")
1297                                 in->limits(NO_LIMITS);
1298                         else
1299                                 in->limits(AUTO_LIMITS);
1300                 } else if (in->limits() == AUTO_LIMITS)
1301                         in->limits(in->defaultLimits() == LIMITS ? NO_LIMITS : LIMITS);
1302                 else
1303                         in->limits(AUTO_LIMITS);
1304                 return;
1305         }
1306
1307         default:
1308                 InsetMath::doDispatch(cur, cmd);
1309                 break;
1310         }
1311 }
1312
1313
1314 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1315         // look for macro to open/close, but stay in mathed
1316         for (; !it.empty(); it.pop_back()) {
1317
1318                 // go backward through the current cell
1319                 Inset * inset = it.nextInset();
1320                 while (inset && inset->asInsetMath()) {
1321                         InsetMathMacro * macro = inset->asInsetMath()->asMacro();
1322                         if (macro) {
1323                                 // found the an macro to open/close?
1324                                 if (macro->folded() != fold)
1325                                         return true;
1326
1327                                 // Wrong folding state.
1328                                 // If this was the first we see in this slice, look further left,
1329                                 // otherwise go up.
1330                                 if (inset != it.nextInset())
1331                                         break;
1332                         }
1333
1334                         // go up if this was the left most position
1335                         if (it.pos() == 0)
1336                                 break;
1337
1338                         // go left
1339                         it.pos()--;
1340                         inset = it.nextInset();
1341                 }
1342         }
1343
1344         return false;
1345 }
1346
1347
1348 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1349                 FuncStatus & flag) const
1350 {
1351         // the font related toggles
1352         //string tc = "mathnormal";
1353         bool ret = true;
1354         string const arg = to_utf8(cmd.argument());
1355         switch (cmd.action()) {
1356 #if 0
1357         case LFUN_INSET_MODIFY:
1358                 // FIXME: check temporarily disabled
1359                 // valign code
1360                 char align = mathcursor::valign();
1361                 if (align == '\0') {
1362                         enable = false;
1363                         break;
1364                 }
1365                 if (cmd.argument().empty()) {
1366                         flag.clear();
1367                         break;
1368                 }
1369                 if (!contains("tcb", cmd.argument()[0])) {
1370                         enable = false;
1371                         break;
1372                 }
1373                 flag.setOnOff(cmd.argument()[0] == align);
1374                 break;
1375 #endif
1376         /// We have to handle them since 1.4 blocks all unhandled actions
1377         case LFUN_FONT_ITAL:
1378         case LFUN_FONT_BOLD:
1379         case LFUN_FONT_BOLDSYMBOL:
1380         case LFUN_FONT_SANS:
1381         case LFUN_FONT_EMPH:
1382         case LFUN_FONT_TYPEWRITER:
1383         case LFUN_FONT_NOUN:
1384         case LFUN_FONT_ROMAN:
1385         case LFUN_FONT_DEFAULT:
1386                 flag.setEnabled(true);
1387                 break;
1388
1389         // we just need to be in math mode to enable that
1390         case LFUN_MATH_SIZE:
1391         case LFUN_MATH_SPACE:
1392         case LFUN_MATH_EXTERN:
1393                 flag.setEnabled(true);
1394                 break;
1395
1396         case LFUN_FONT_UNDERLINE:
1397         case LFUN_FONT_FRAK:
1398                 flag.setEnabled(currentMode() != TEXT_MODE);
1399                 break;
1400
1401         case LFUN_MATH_FONT_STYLE: {
1402                 bool const textarg =
1403                         arg == "textbf"   || arg == "textsf" ||
1404                         arg == "textrm"   || arg == "textmd" ||
1405                         arg == "textit"   || arg == "textsc" ||
1406                         arg == "textsl"   || arg == "textup" ||
1407                         arg == "texttt"   || arg == "textbb" ||
1408                         arg == "textnormal";
1409                 flag.setEnabled(currentMode() != TEXT_MODE || textarg);
1410                 break;
1411         }
1412
1413         case LFUN_MATH_MODE:
1414                 // forbid "math-mode on" in math mode to prevent irritating
1415                 // behaviour of menu entries (bug 6709)
1416                 flag.setEnabled(currentMode() == TEXT_MODE || arg != "on");
1417                 break;
1418
1419         case LFUN_MATH_INSERT:
1420                 flag.setEnabled(currentMode() != TEXT_MODE);
1421                 break;
1422
1423         case LFUN_MATH_AMS_MATRIX:
1424         case LFUN_MATH_MATRIX:
1425                 flag.setEnabled(currentMode() == MATH_MODE);
1426                 break;
1427
1428         case LFUN_INSET_INSERT: {
1429                 // Don't test createMathInset_fromDialogStr(), since
1430                 // getStatus is not called with a valid reference and the
1431                 // dialog would not be applicable.
1432                 string const name = cmd.getArg(0);
1433                 flag.setEnabled(name == "ref" || name == "mathspace");
1434                 break;
1435         }
1436
1437         case LFUN_DIALOG_SHOW_NEW_INSET: {
1438                 docstring const & name = cmd.argument();
1439                 if (name == "space")
1440                         flag.setEnabled(false);
1441                 break;
1442         }
1443
1444
1445         case LFUN_MATH_DELIM:
1446         case LFUN_MATH_BIGDELIM:
1447                 // Don't do this with multi-cell selections
1448                 flag.setEnabled(cur.selBegin().idx() == cur.selEnd().idx());
1449                 break;
1450
1451         case LFUN_MATH_MACRO_FOLD:
1452         case LFUN_MATH_MACRO_UNFOLD: {
1453                 Cursor it = cur;
1454                 bool found = findMacroToFoldUnfold(it, cmd.action() == LFUN_MATH_MACRO_FOLD);
1455                 flag.setEnabled(found);
1456                 break;
1457         }
1458
1459         case LFUN_SPECIALCHAR_INSERT:
1460         case LFUN_SCRIPT_INSERT:
1461                 // FIXME: These would probably make sense in math-text mode
1462                 flag.setEnabled(false);
1463                 break;
1464
1465         case LFUN_CAPTION_INSERT:
1466                 flag.setEnabled(false);
1467                 break;
1468
1469         case LFUN_SPACE_INSERT: {
1470                 docstring const & name = cmd.argument();
1471                 if (name == "visible")
1472                         flag.setEnabled(false);
1473                 break;
1474         }
1475
1476         case LFUN_INSET_DISSOLVE:
1477                 flag.setEnabled(!asHullInset());
1478                 break;
1479
1480         case LFUN_PASTE: {
1481                 docstring const & name = cmd.argument();
1482                 if (name == "html" || name == "latex")
1483                         flag.setEnabled(false);
1484                 break;
1485         }
1486
1487         case LFUN_MATH_LIMITS: {
1488                 InsetMath * in = 0;
1489                 if (cur.pos() < cur.lastpos() && cur.nextMath().allowsLimitsChange())
1490                         in = &cur.nextMath();
1491                 else if (cur.pos() > 0 && cur.prevMath().allowsLimitsChange())
1492                         in = &cur.prevMath();
1493                 else if (cur.lastpos() > 0 && cur.cell().back()->allowsLimitsChange())
1494                         in = cur.cell().back().nucleus();
1495                 if (in) {
1496                         if (!cmd.argument().empty()) {
1497                                 if (cmd.argument() == "limits")
1498                                         flag.setOnOff(in->limits() == LIMITS);
1499                                 else if (cmd.argument() == "nolimits")
1500                                         flag.setOnOff(in->limits() == NO_LIMITS);
1501                                 else
1502                                         flag.setOnOff(in->limits() == AUTO_LIMITS);
1503                         }
1504                         flag.setEnabled(true);
1505                 } else
1506                         flag.setEnabled(false);
1507                 return true;
1508         }
1509
1510         default:
1511                 ret = false;
1512                 break;
1513         }
1514         return ret;
1515 }
1516
1517
1518 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1519 {
1520         cur.push(*this);
1521         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_LEFT ||
1522                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1523         enter_front ? idxFirst(cur) : idxLast(cur);
1524         cur.resetAnchor();
1525         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1526 }
1527
1528
1529 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1530 {
1531         int idx_min = -1;
1532         int dist_min = 1000000;
1533         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1534                 int const d = cell(i).dist(cur.bv(), x, y);
1535                 if (d < dist_min) {
1536                         dist_min = d;
1537                         idx_min = i;
1538                 }
1539         }
1540         if (idx_min == -1)
1541                 return this;
1542
1543         MathData & ar = cell(idx_min);
1544         cur.push(*this);
1545         cur.idx() = idx_min;
1546         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1547
1548         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1549         if (dist_min == 0) {
1550                 // hit inside cell
1551                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1552                         if (ar[i]->covers(cur.bv(), x, y))
1553                                 return ar[i].nucleus()->editXY(cur, x, y);
1554         }
1555         return this;
1556 }
1557
1558
1559 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1560 {
1561         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1562         BufferView & bv = cur.bv();
1563         if (cmd.button() == mouse_button::button3) {
1564                 // Don't do anything if we right-click a
1565                 // selection, a context menu will popup.
1566                 if (bv.cursor().selection() && cur >= bv.cursor().selectionBegin()
1567                       && cur < bv.cursor().selectionEnd()) {
1568                         cur.noScreenUpdate();
1569                         return;
1570                 }
1571         }
1572
1573         // set cursor after the inset if x is nearer to that position (bug 9748)
1574         cur.moveToClosestEdge(cmd.x(), true);
1575
1576         bool do_selection = cmd.button() == mouse_button::button1
1577                 && cmd.modifier() == ShiftModifier;
1578         bv.mouseSetCursor(cur, do_selection);
1579         if (cmd.button() == mouse_button::button1) {
1580                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1581                 // Update the cursor update flags as needed:
1582                 //
1583                 // Update::Decoration: tells to update the decoration
1584                 //                     (visual box corners that define
1585                 //                     the inset)/
1586                 // Update::FitCursor: adjust the screen to the cursor
1587                 //                    position if needed
1588                 // cur.result().update(): don't overwrite previously set flags.
1589                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor
1590                                 | cur.result().screenUpdate());
1591         } else if (cmd.button() == mouse_button::button2 && lyxrc.mouse_middlebutton_paste) {
1592                 if (cap::selection()) {
1593                         // See comment in Text::dispatch why we do this
1594                         cap::copySelectionToStack();
1595                         cmd = FuncRequest(LFUN_PASTE, "0");
1596                         doDispatch(bv.cursor(), cmd);
1597                 } else {
1598                         MathData ar;
1599                         asArray(theSelection().get(), ar);
1600                         bv.cursor().insert(ar);
1601                 }
1602         }
1603 }
1604
1605
1606 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1607 {
1608         // only select with button 1
1609         if (cmd.button() != mouse_button::button1)
1610                 return;
1611
1612         Cursor & bvcur = cur.bv().cursor();
1613
1614         // ignore motions deeper nested than the real anchor
1615         if (!bvcur.realAnchor().hasPart(cur)) {
1616                 cur.undispatched();
1617                 return;
1618         }
1619
1620         // set cursor after the inset if x is nearer to that position (bug 9748)
1621         cur.moveToClosestEdge(cmd.x());
1622
1623         CursorSlice old = bvcur.top();
1624
1625         // We continue with our existing selection or start a new one, so don't
1626         // reset the anchor.
1627         bvcur.setCursor(cur);
1628         // Did we actually move?
1629         if (cur.top() == old)
1630                 // We didn't move one iota, so no need to change selection status
1631                 // or update the screen.
1632                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1633         else
1634                 bvcur.setSelection();
1635 }
1636
1637
1638 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1639 {
1640         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1641
1642         if (cmd.button() == mouse_button::button1) {
1643                 if (!cur.selection())
1644                         cur.noScreenUpdate();
1645                 else {
1646                         Cursor & bvcur = cur.bv().cursor();
1647                         bvcur.selection(true);
1648                 }
1649                 return;
1650         }
1651
1652         cur.undispatched();
1653 }
1654
1655
1656 bool InsetMathNest::interpretChar(Cursor & cur, char_type const c)
1657 {
1658         // try auto-correction
1659         if (lyxrc.autocorrection_math && cur.pos() != 0
1660                   && math_autocorrect(cur, c))
1661                 return true;
1662
1663         //lyxerr << "interpret 2: '" << c << "'" << endl;
1664         docstring save_selection;
1665         if (c == '^' || c == '_')
1666                 save_selection = grabAndEraseSelection(cur);
1667
1668         cur.clearTargetX();
1669         Buffer * buf = cur.buffer();
1670
1671         // handle macroMode
1672         if (cur.inMacroMode()) {
1673                 docstring name = cur.macroName();
1674
1675                 /// are we currently typing '#1' or '#2' or...?
1676                 if (name == "\\#") {
1677                         cur.backspace();
1678                         int n = c - '0';
1679                         if (n >= 1 && n <= 9)
1680                                 cur.insert(new InsetMathMacroArgument(n));
1681                         return true;
1682                 }
1683
1684                 // do not finish macro for known * commands
1685                 bool star_macro = c == '*'
1686                         && (in_word_set(name.substr(1) + '*')
1687                             || cur.buffer()->getMacro(name.substr(1) + "*", cur, true));
1688                 if (isAlphaASCII(c) || star_macro) {
1689                         cur.activeMacro()->setName(name + docstring(1, c));
1690                         return true;
1691                 }
1692
1693                 // handle 'special char' macros
1694                 if (name == "\\") {
1695                         // remove the '\\'
1696                         if (c == '\\') {
1697                                 cur.backspace();
1698                                 if (currentMode() != InsetMath::MATH_MODE)
1699                                         cur.niceInsert(createInsetMath("textbackslash", buf));
1700                                 else
1701                                         cur.niceInsert(createInsetMath("backslash", buf));
1702                         } else if (c == '^' && currentMode() == InsetMath::MATH_MODE) {
1703                                 cur.backspace();
1704                                 cur.niceInsert(createInsetMath("mathcircumflex", buf));
1705                         } else if (c == '{' || c == '%') {
1706                                 //using the saved selection as argument
1707                                 InsetMathUnknown * p = cur.activeMacro();
1708                                 p->finalize();
1709                                 MathData sel(cur.buffer());
1710                                 asArray(p->selection(), sel);
1711                                 cur.backspace();
1712                                 if (c == '{')
1713                                         cur.niceInsert(MathAtom(new InsetMathBrace(sel)));
1714                                 else
1715                                         cur.niceInsert(MathAtom(new InsetMathComment(sel)));
1716                         } else if (c == '#') {
1717                                 LASSERT(cur.activeMacro(), return false);
1718                                 cur.activeMacro()->setName(name + docstring(1, c));
1719                         } else {
1720                                 cur.backspace();
1721                                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1722                         }
1723                         return true;
1724                 }
1725
1726                 // One character big delimiters. The others are handled in
1727                 // interpretString().
1728                 latexkeys const * l = in_word_set(name.substr(1));
1729                 if (name[0] == '\\' && l && l->inset == "big") {
1730                         docstring delim;
1731                         switch (c) {
1732                         case '{':
1733                                 delim = from_ascii("\\{");
1734                                 break;
1735                         case '}':
1736                                 delim = from_ascii("\\}");
1737                                 break;
1738                         default:
1739                                 delim = docstring(1, c);
1740                                 break;
1741                         }
1742                         if (InsetMathBig::isBigInsetDelim(delim)) {
1743                                 // name + delim ared a valid InsetMathBig.
1744                                 // We can't use cur.macroModeClose() because
1745                                 // it does not handle delim.
1746                                 InsetMathUnknown * p = cur.activeMacro();
1747                                 p->finalize();
1748                                 --cur.pos();
1749                                 cur.cell().erase(cur.pos());
1750                                 cur.plainInsert(MathAtom(
1751                                         new InsetMathBig(name.substr(1), delim)));
1752                                 return true;
1753                         }
1754                 } else if (name == "\\smash" && c == '[') {
1755                         // We can't use cur.macroModeClose() because
1756                         // it would create an InsetMathPhantom
1757                         InsetMathUnknown * p = cur.activeMacro();
1758                         p->finalize();
1759                         interpretChar(cur, c);
1760                         return true;
1761                 }
1762
1763                 // leave macro mode and try again if necessary
1764                 if (cur.macroModeClose()) {
1765                         MathAtom const atom = cur.prevAtom();
1766                         if (atom->asNestInset() && atom->isActive()) {
1767                                 cur.posBackward();
1768                                 cur.nextInset()->edit(cur, true);
1769                         }
1770                 }
1771                 if (c == '{')
1772                         cur.niceInsert(MathAtom(new InsetMathBrace(buf)));
1773                 else if (c != ' ')
1774                         interpretChar(cur, c);
1775                 return true;
1776         }
1777
1778
1779         // just clear selection on pressing the space bar
1780         if (cur.selection() && c == ' ') {
1781                 cur.selection(false);
1782                 return true;
1783         }
1784
1785         if (c == '\\') {
1786                 //lyxerr << "starting with macro" << endl;
1787                 bool reduced = cap::reduceSelectionToOneCell(cur);
1788                 if (reduced || !cur.selection()) {
1789                         cur.recordUndoInset();
1790                         docstring const safe = cap::grabAndEraseSelection(cur);
1791                         if (!cur.inRegexped())
1792                                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1793                         else
1794                                 cur.niceInsert(createInsetMath("backslash", buf));
1795                 }
1796                 return true;
1797         }
1798
1799         selClearOrDel(cur);
1800
1801         if (c == '\n') {
1802                 if (currentMode() != InsetMath::MATH_MODE)
1803                         cur.insert(c);
1804                 return true;
1805         }
1806
1807         if (c == ' ') {
1808                 if (currentMode() != InsetMath::MATH_MODE) {
1809                         // insert spaces in text or undecided mode,
1810                         // but suppress direct insertion of two spaces in a row
1811                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1812                         // it is better than nothing...
1813                         if (cur.pos() == 0 || cur.prevAtom()->getChar() != ' ') {
1814                                 cur.insert(c);
1815                                 // FIXME: we have to enable full redraw here because of the
1816                                 // visual box corners that define the inset. If we know for
1817                                 // sure that we stay within the same cell we can optimize for
1818                                 // that using:
1819                                 //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1820                         }
1821                         return true;
1822                 }
1823                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1824                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1825                         // FIXME: we have to enable full redraw here because of the
1826                         // visual box corners that define the inset. If we know for
1827                         // sure that we stay within the same cell we can optimize for
1828                         // that using:
1829                         //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1830                         return true;
1831                 }
1832
1833                 if (cur.popForward()) {
1834                         // FIXME: we have to enable full redraw here because of the
1835                         // visual box corners that define the inset. If we know for
1836                         // sure that we stay within the same cell we can optimize for
1837                         // that using:
1838                         //cur.screenUpdateFlags(Update::FitCursor);
1839                         return true;
1840                 }
1841
1842                 // if we are at the very end, leave the formula
1843                 return cur.pos() != cur.lastpos();
1844         }
1845
1846         // These should be treated differently when not in text mode:
1847         if (cur.inRegexped()) {
1848                 switch (c) {
1849                 case '^':
1850                         cur.niceInsert(createInsetMath("mathcircumflex", buf));
1851                         break;
1852                 case '{':
1853                 case '}':
1854                 case '#':
1855                 case '%':
1856                 case '_':
1857                         cur.niceInsert(createInsetMath(docstring(1, c), buf));
1858                         break;
1859                 case '~':
1860                         cur.niceInsert(createInsetMath("sim", buf));
1861                         break;
1862                 default:
1863                         cur.insert(c);
1864                 }
1865                 return true;
1866         } else if (currentMode() != InsetMath::TEXT_MODE) {
1867                 if (c == '_') {
1868                         script(cur, false, save_selection);
1869                         return true;
1870                 }
1871                 if (c == '^') {
1872                         script(cur, true, save_selection);
1873                         return true;
1874                 }
1875                 if (c == '~') {
1876                         cur.niceInsert(createInsetMath("sim", buf));
1877                         return true;
1878                 }
1879                 if (currentMode() == InsetMath::MATH_MODE && Encodings::isUnicodeTextOnly(c)) {
1880                         MathAtom at = createInsetMath("text", buf);
1881                         at.nucleus()->cell(0).push_back(MathAtom(new InsetMathChar(c)));
1882                         cur.insert(at);
1883                         cur.posForward();
1884                         return true;
1885                 }
1886         } else {
1887                 if (c == '^') {
1888                         cur.niceInsert(createInsetMath("textasciicircum", buf));
1889                         return true;
1890                 }
1891                 if (c == '~') {
1892                         cur.niceInsert(createInsetMath("textasciitilde", buf));
1893                         return true;
1894                 }
1895         }
1896
1897         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1898             c == '%' || c == '_') {
1899                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1900                 return true;
1901         }
1902
1903         // no special circumstances, so insert the character without any fuss
1904         cur.insert(c);
1905         return true;
1906 }
1907
1908
1909 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1910 {
1911         if (str == "\\limits" || str == "\\nolimits") {
1912                 if (cur.pos() > 0 && cur.prevMath().allowsLimitsChange()) {
1913                         cur.prevMath().limits(str == "\\limits" ? LIMITS : NO_LIMITS);
1914                         return true;
1915                 } else {
1916                         cur.message(bformat(_("Cannot apply %1$s here."), str));
1917                         return false;
1918                 }
1919         }
1920         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1921         // possible
1922         if (!cur.empty() && cur.pos() > 0 &&
1923             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1924                 if (InsetMathBig::isBigInsetDelim(str)) {
1925                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1926                         if (prev[0] == '\\') {
1927                                 prev = prev.substr(1);
1928                                 latexkeys const * l = in_word_set(prev);
1929                                 if (l && l->inset == "big") {
1930                                         cur.recordUndoSelection();
1931                                         cur.cell()[cur.pos() - 1] =
1932                                                 MathAtom(new InsetMathBig(prev, str));
1933                                         return true;
1934                                 }
1935                         }
1936                 }
1937         }
1938         return false;
1939 }
1940
1941
1942 bool InsetMathNest::script(Cursor & cur, bool up)
1943 {
1944         return script(cur, up, docstring());
1945 }
1946
1947
1948 bool InsetMathNest::script(Cursor & cur, bool up,
1949                 docstring const & save_selection)
1950 {
1951         // Hack to get \^ and \_ working
1952         //lyxerr << "handling script: up: " << up << endl;
1953         if (cur.inMacroMode() && cur.macroName() == "\\") {
1954                 if (up)
1955                         cur.niceInsert(createInsetMath("mathcircumflex", cur.buffer()));
1956                 else
1957                         interpretChar(cur, '_');
1958                 return true;
1959         }
1960
1961         cur.macroModeClose();
1962         if (asScriptInset() && cur.idx() == 0) {
1963                 // we are in a nucleus of a script inset, move to _our_ script
1964                 InsetMathScript * inset = asScriptInset();
1965                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1966                 inset->ensure(up);
1967                 cur.idx() = inset->idxOfScript(up);
1968                 cur.pos() = 0;
1969         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1970                 --cur.pos();
1971                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1972                 cur.push(*inset);
1973                 inset->ensure(up);
1974                 cur.idx() = inset->idxOfScript(up);
1975                 cur.pos() = cur.lastpos();
1976         } else {
1977                 // convert the thing to our left to a scriptinset or create a new
1978                 // one if in the very first position of the array
1979                 if (cur.pos() == 0) {
1980                         //lyxerr << "new scriptinset" << endl;
1981                         cur.insert(new InsetMathScript(buffer_, up));
1982                 } else {
1983                         //lyxerr << "converting prev atom " << endl;
1984                         cur.prevAtom() = MathAtom(new InsetMathScript(buffer_, cur.prevAtom(), up));
1985                 }
1986                 --cur.pos();
1987                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1988                 // See comment in MathParser.cpp for special handling of {}-bases
1989
1990                 cur.push(*inset);
1991                 cur.idx() = 1;
1992                 cur.pos() = 0;
1993         }
1994         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1995         cur.niceInsert(save_selection);
1996         cur.resetAnchor();
1997         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1998         return true;
1999 }
2000
2001
2002 bool InsetMathNest::completionSupported(Cursor const & cur) const
2003 {
2004         return cur.inMacroMode();
2005 }
2006
2007
2008 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
2009 {
2010         return cur.inMacroMode();
2011 }
2012
2013
2014 bool InsetMathNest::automaticInlineCompletion() const
2015 {
2016         return lyxrc.completion_inline_math;
2017 }
2018
2019
2020 bool InsetMathNest::automaticPopupCompletion() const
2021 {
2022         return lyxrc.completion_popup_math;
2023 }
2024
2025
2026 CompletionList const *
2027 InsetMathNest::createCompletionList(Cursor const & cur) const
2028 {
2029         if (!cur.inMacroMode())
2030                 return 0;
2031
2032         return new MathCompletionList(cur);
2033 }
2034
2035
2036 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
2037 {
2038         if (!cur.inMacroMode())
2039                 return docstring();
2040
2041         return cur.activeMacro()->name();
2042 }
2043
2044
2045 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
2046                                      bool finished)
2047 {
2048         if (!cur.inMacroMode())
2049                 return false;
2050
2051         // append completion to active macro
2052         InsetMathUnknown * inset = cur.activeMacro();
2053         inset->setName(inset->name() + s);
2054
2055         // finish macro
2056         if (finished) {
2057 #if 0
2058                 // FIXME: this creates duplicates in the completion popup
2059                 // which looks ugly. Moreover the changes the list lengths
2060                 // which seems to confuse the popup as well.
2061                 MathCompletionList::addToFavorites(inset->name());
2062 #endif
2063                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
2064         }
2065
2066         return true;
2067 }
2068
2069
2070 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
2071                                         Dimension & dim) const
2072 {
2073         Inset const * inset = cur.activeMacro();
2074         if (!inset)
2075                 return;
2076
2077         // get inset dimensions
2078         dim = cur.bv().coordCache().insets().dim(inset);
2079         // FIXME: these 3 are no accurate, but should depend on the font.
2080         // Now the popup jumps down if you enter a char with descent > 0.
2081         dim.des += 3;
2082         dim.asc += 3;
2083
2084         // and position
2085         Point xy = cur.bv().coordCache().insets().xy(inset);
2086         x = xy.x_;
2087         y = xy.y_;
2088 }
2089
2090
2091 ////////////////////////////////////////////////////////////////////
2092
2093 MathCompletionList::MathCompletionList(Cursor const & cur)
2094 {
2095         // fill it with macros from the buffer
2096         MacroNameSet macros;
2097         cur.buffer()->listMacroNames(macros);
2098         MacroNameSet::const_iterator it;
2099         for (it = macros.begin(); it != macros.end(); ++it) {
2100                 if (cur.buffer()->getMacro(*it, cur, false))
2101                         locals.push_back("\\" + *it);
2102         }
2103         sort(locals.begin(), locals.end());
2104
2105         if (!globals.empty())
2106                 return;
2107
2108         // fill in global macros
2109         macros.clear();
2110         MacroTable::globalMacros().getMacroNames(macros, false);
2111         //lyxerr << "Globals completion macros: ";
2112         for (it = macros.begin(); it != macros.end(); ++it) {
2113                 //lyxerr << "\\" + *it << " ";
2114                 globals.push_back("\\" + *it);
2115         }
2116         //lyxerr << std::endl;
2117
2118         // fill in global commands
2119         globals.push_back(from_ascii("\\boxed"));
2120         globals.push_back(from_ascii("\\fbox"));
2121         globals.push_back(from_ascii("\\framebox"));
2122         globals.push_back(from_ascii("\\makebox"));
2123         globals.push_back(from_ascii("\\kern"));
2124         globals.push_back(from_ascii("\\xhookrightarrow"));
2125         globals.push_back(from_ascii("\\xhookleftarrow"));
2126         globals.push_back(from_ascii("\\xrightarrow"));
2127         globals.push_back(from_ascii("\\xRightarrow"));
2128         globals.push_back(from_ascii("\\xrightharpoondown"));
2129         globals.push_back(from_ascii("\\xrightharpoonup"));
2130         globals.push_back(from_ascii("\\xrightleftharpoons"));
2131         globals.push_back(from_ascii("\\xleftarrow"));
2132         globals.push_back(from_ascii("\\xLeftarrow"));
2133         globals.push_back(from_ascii("\\xleftharpoondown"));
2134         globals.push_back(from_ascii("\\xleftharpoonup"));
2135         globals.push_back(from_ascii("\\xleftrightarrow"));
2136         globals.push_back(from_ascii("\\xLeftrightarrow"));
2137         globals.push_back(from_ascii("\\xleftrightharpoons"));
2138         globals.push_back(from_ascii("\\xmapsto"));
2139         globals.push_back(from_ascii("\\split"));
2140         globals.push_back(from_ascii("\\gathered"));
2141         globals.push_back(from_ascii("\\aligned"));
2142         globals.push_back(from_ascii("\\alignedat"));
2143         globals.push_back(from_ascii("\\cases"));
2144         globals.push_back(from_ascii("\\substack"));
2145         globals.push_back(from_ascii("\\xymatrix"));
2146         globals.push_back(from_ascii("\\Diagram"));
2147         globals.push_back(from_ascii("\\subarray"));
2148         globals.push_back(from_ascii("\\array"));
2149         globals.push_back(from_ascii("\\sqrt"));
2150         globals.push_back(from_ascii("\\root"));
2151         globals.push_back(from_ascii("\\tabular"));
2152         globals.push_back(from_ascii("\\sideset"));
2153         globals.push_back(from_ascii("\\stackrel"));
2154         globals.push_back(from_ascii("\\stackrelthree"));
2155         globals.push_back(from_ascii("\\binom"));
2156         globals.push_back(from_ascii("\\choose"));
2157         globals.push_back(from_ascii("\\brace"));
2158         globals.push_back(from_ascii("\\brack"));
2159         globals.push_back(from_ascii("\\frac"));
2160         globals.push_back(from_ascii("\\over"));
2161         globals.push_back(from_ascii("\\nicefrac"));
2162         globals.push_back(from_ascii("\\unitfrac"));
2163         globals.push_back(from_ascii("\\unitfracthree"));
2164         globals.push_back(from_ascii("\\unitone"));
2165         globals.push_back(from_ascii("\\unittwo"));
2166         globals.push_back(from_ascii("\\infer"));
2167         globals.push_back(from_ascii("\\atop"));
2168         globals.push_back(from_ascii("\\lefteqn"));
2169         globals.push_back(from_ascii("\\boldsymbol"));
2170         globals.push_back(from_ascii("\\bm"));
2171         globals.push_back(from_ascii("\\color"));
2172         globals.push_back(from_ascii("\\normalcolor"));
2173         globals.push_back(from_ascii("\\textcolor"));
2174         globals.push_back(from_ascii("\\cfrac"));
2175         globals.push_back(from_ascii("\\cfracleft"));
2176         globals.push_back(from_ascii("\\cfracright"));
2177         globals.push_back(from_ascii("\\dfrac"));
2178         globals.push_back(from_ascii("\\tfrac"));
2179         globals.push_back(from_ascii("\\dbinom"));
2180         globals.push_back(from_ascii("\\tbinom"));
2181         globals.push_back(from_ascii("\\hphantom"));
2182         globals.push_back(from_ascii("\\phantom"));
2183         globals.push_back(from_ascii("\\vphantom"));
2184         globals.push_back(from_ascii("\\cancel"));
2185         globals.push_back(from_ascii("\\bcancel"));
2186         globals.push_back(from_ascii("\\xcancel"));
2187         globals.push_back(from_ascii("\\cancelto"));
2188         globals.push_back(from_ascii("\\smash"));
2189         globals.push_back(from_ascii("\\mathclap"));
2190         globals.push_back(from_ascii("\\mathllap"));
2191         globals.push_back(from_ascii("\\mathrlap"));
2192         globals.push_back(from_ascii("\\ensuremath"));
2193         MathWordList const & words = mathedWordList();
2194         MathWordList::const_iterator it2;
2195         //lyxerr << "Globals completion commands: ";
2196         for (it2 = words.begin(); it2 != words.end(); ++it2) {
2197                 if (it2->second.inset != "macro" && !it2->second.hidden) {
2198                         // macros are already read from MacroTable::globalMacros()
2199                         globals.push_back('\\' + it2->first);
2200                         //lyxerr << '\\' + it2->first << ' ';
2201                 }
2202         }
2203         //lyxerr << std::endl;
2204         sort(globals.begin(), globals.end());
2205 }
2206
2207
2208 MathCompletionList::~MathCompletionList()
2209 {
2210 }
2211
2212
2213 size_type MathCompletionList::size() const
2214 {
2215         return locals.size() + globals.size();
2216 }
2217
2218
2219 docstring const & MathCompletionList::data(size_t idx) const
2220 {
2221         size_t lsize = locals.size();
2222         if (idx >= lsize)
2223                 return globals[idx - lsize];
2224         else
2225                 return locals[idx];
2226 }
2227
2228
2229 std::string MathCompletionList::icon(size_t idx) const
2230 {
2231         // get the latex command
2232         docstring cmd;
2233         size_t lsize = locals.size();
2234         if (idx >= lsize)
2235                 cmd = globals[idx - lsize];
2236         else
2237                 cmd = locals[idx];
2238
2239         // get the icon name by stripping the backslash
2240         docstring icon_name = frontend::Application::mathIcon(cmd.substr(1));
2241         if (icon_name.empty())
2242                 return std::string();
2243         return "math/" + to_utf8(icon_name);
2244 }
2245
2246 std::vector<docstring> MathCompletionList::globals;
2247
2248 } // namespace lyx