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 (idx_type i = 0, n = nargs(); i != n; ++i) {
 122                 MathData & data = cell(i);
 123                 for (size_t j = 0; j != data.size(); ++j)
 124                         data[j].nucleus()->setBuffer(buffer);
 125         }
 126 }
 127
 128
 129 InsetMath::idx_type InsetMathNest::nargs() const
 130 {
 131         return cells_.size();
 132 }
 133
 134
 135 void InsetMathNest::cursorPos(BufferView const & bv,
 136                 CursorSlice const & sl, bool /*boundary*/,
 137                 int & x, int & y) const
 138 {
 139 // FIXME: This is a hack. Ideally, the coord cache should not store
 140 // absolute positions, but relative ones. This would mean to call
 141 // setXY() not in MathData::draw(), but in the parent insets' draw()
 142 // with the correctly adjusted x,y values. But this means that we'd have
 143 // to touch all (math)inset's draw() methods. Right now, we'll store
 144 // absolute value, and make them here relative, only to make them
 145 // absolute again when actually drawing the cursor. What a mess.
 146         LASSERT(&sl.inset() == this, return);
 147         MathData const & ar = sl.cell();
 148         CoordCache const & coord_cache = bv.coordCache();
 149         if (!coord_cache.getArrays().has(&ar)) {
 150                 // this can (semi-)legally happen if we just created this cell
 151                 // and it never has been drawn before. So don't ASSERT.
 152                 //lyxerr << "no cached data for array " << &ar << endl;
 153                 x = 0;
 154                 y = 0;
 155                 return;
 156         }
 157         Point const pt = coord_cache.getArrays().xy(&ar);
 158         if (!coord_cache.getInsets().has(this)) {
 159                 // same as above
 160                 //lyxerr << "no cached data for inset " << this << endl;
 161                 x = 0;
 162                 y = 0;
 163                 return;
 164         }
 165         Point const pt2 = coord_cache.getInsets().xy(this);
 166         //lyxerr << "retrieving position cache for MathData "
 167         //      << pt.x_ << ' ' << pt.y_ << endl;
 168         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 169         y = pt.y_ - pt2.y_;
 170 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 171 //              << " asc: " << ascent() << "  des: " << descent()
 172 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 173         // move cursor visually into empty cells ("blue rectangles");
 174         if (ar.empty()) {
 175                 Dimension const dim = coord_cache.getArrays().dim(&ar);
 176                 x += dim.wid / 3;
 177         }
 178 }
 179
 180
 181 void InsetMathNest::cellsMetrics(MetricsInfo const & mi) const
 182 {
 183         MetricsInfo m = mi;
 184         for (auto const & cell : cells_) {
 185                 Dimension dim;
 186                 cell.metrics(m, dim);
 187         }
 188 }
 189
 190
 191 void InsetMathNest::updateBuffer(ParIterator const & it, UpdateType utype)
 192 {
 193         for (idx_type i = 0, n = nargs(); i != n; ++i)
 194                 cell(i).updateBuffer(it, utype);
 195 }
 196
 197
 198
 199 bool InsetMathNest::idxNext(Cursor & cur) const
 200 {
 201         LASSERT(&cur.inset() == this, return false);
 202         if (cur.idx() == cur.lastidx())
 203                 return false;
 204         ++cur.idx();
 205         cur.pos() = 0;
 206         return true;
 207 }
 208
 209
 210 bool InsetMathNest::idxForward(Cursor & cur) const
 211 {
 212         return idxNext(cur);
 213 }
 214
 215
 216 bool InsetMathNest::idxPrev(Cursor & cur) const
 217 {
 218         LASSERT(&cur.inset() == this, return false);
 219         if (cur.idx() == 0)
 220                 return false;
 221         --cur.idx();
 222         cur.pos() = cur.lastpos();
 223         return true;
 224 }
 225
 226
 227 bool InsetMathNest::idxBackward(Cursor & cur) const
 228 {
 229         return idxPrev(cur);
 230 }
 231
 232
 233 bool InsetMathNest::idxFirst(Cursor & cur) const
 234 {
 235         LASSERT(&cur.inset() == this, return false);
 236         if (nargs() == 0)
 237                 return false;
 238         cur.idx() = firstIdx();
 239         cur.pos() = 0;
 240         return true;
 241 }
 242
 243
 244 bool InsetMathNest::idxLast(Cursor & cur) const
 245 {
 246         LASSERT(&cur.inset() == this, return false);
 247         if (nargs() == 0)
 248                 return false;
 249         cur.idx() = lastIdx();
 250         cur.pos() = cur.lastpos();
 251         return true;
 252 }
 253
 254
 255 void InsetMathNest::dump() const
 256 {
 257         odocstringstream oss;
 258         otexrowstream ots(oss);
 259         WriteStream os(ots);
 260         os << "---------------------------------------------\n";
 261         write(os);
 262         os << "\n";
 263         for (idx_type i = 0, n = nargs(); i != n; ++i)
 264                 os << cell(i) << "\n";
 265         os << "---------------------------------------------\n";
 266         lyxerr << to_utf8(oss.str());
 267 }
 268
 269
 270 void InsetMathNest::draw(PainterInfo &, int, int) const
 271 {
 272 #if 0
 273         if (lock_)
 274                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 275                                         Color_mathlockbg);
 276 #endif
 277 }
 278
 279
 280 void InsetMathNest::validate(LaTeXFeatures & features) const
 281 {
 282         for (idx_type i = 0; i < nargs(); ++i)
 283                 cell(i).validate(features);
 284 }
 285
 286
 287 void InsetMathNest::replace(ReplaceData & rep)
 288 {
 289         for (idx_type i = 0; i < nargs(); ++i)
 290                 cell(i).replace(rep);
 291 }
 292
 293
 294 bool InsetMathNest::contains(MathData const & ar) const
 295 {
 296         for (idx_type i = 0; i < nargs(); ++i)
 297                 if (cell(i).contains(ar))
 298                         return true;
 299         return false;
 300 }
 301
 302
 303 bool InsetMathNest::lock() const
 304 {
 305         return lock_;
 306 }
 307
 308
 309 void InsetMathNest::lock(bool l)
 310 {
 311         lock_ = l;
 312 }
 313
 314
 315 bool InsetMathNest::isActive() const
 316 {
 317         return nargs() > 0;
 318 }
 319
 320
 321 MathData InsetMathNest::glue() const
 322 {
 323         MathData ar;
 324         for (size_t i = 0; i < nargs(); ++i)
 325                 ar.append(cell(i));
 326         return ar;
 327 }
 328
 329
 330 void InsetMathNest::write(WriteStream & os) const
 331 {
 332         MathEnsurer ensurer(os, currentMode() == MATH_MODE);
 333         ModeSpecifier specifier(os, currentMode(), lockedMode());
 334         docstring const latex_name = name();
 335         os << '\\' << latex_name;
 336         for (size_t i = 0; i < nargs(); ++i) {
 337                 Changer dummy = os.changeRowEntry(TexRow::mathEntry(id(),i));
 338                 os << '{' << cell(i) << '}';
 339         }
 340         if (nargs() == 0)
 341                 os.pendingSpace(true);
 342         if (lock_ && !os.latex()) {
 343                 os << "\\lyxlock";
 344                 os.pendingSpace(true);
 345         }
 346 }
 347
 348
 349 void InsetMathNest::normalize(NormalStream & os) const
 350 {
 351         os << '[' << name();
 352         for (size_t i = 0; i < nargs(); ++i)
 353                 os << ' ' << cell(i);
 354         os << ']';
 355 }
 356
 357
 358 void InsetMathNest::latex(otexstream & os, OutputParams const & runparams) const
 359 {
 360         WriteStream wi(os, runparams.moving_arg, true,
 361                         runparams.dryrun ? WriteStream::wsDryrun : WriteStream::wsDefault,
 362                         runparams.encoding);
 363         wi.strikeoutMath(runparams.inDeletedInset
 364                          && (!LaTeXFeatures::isAvailable("dvipost")
 365                                 || (runparams.flavor != OutputParams::LATEX
 366                                     && runparams.flavor != OutputParams::DVILUATEX)));
 367         if (runparams.inulemcmd) {
 368                 wi.ulemCmd(WriteStream::UNDERLINE);
 369                 if (runparams.local_font) {
 370                         FontInfo f = runparams.local_font->fontInfo();
 371                         if (f.strikeout() == FONT_ON)
 372                                 wi.ulemCmd(WriteStream::STRIKEOUT);
 373                 }
 374         }
 375         wi.canBreakLine(os.canBreakLine());
 376         Changer dummy = wi.changeRowEntry(TexRow::textEntry(runparams.lastid,
 377                                                             runparams.lastpos));
 378         write(wi);
 379         // Reset parbreak status after a math inset.
 380         os.lastChar(0);
 381         os.canBreakLine(wi.canBreakLine());
 382 }
 383
 384
 385 bool InsetMathNest::setMouseHover(BufferView const * bv, bool mouse_hover)
 386         const
 387 {
 388         mouse_hover_[bv] = mouse_hover;
 389         return true;
 390 }
 391
 392
 393 bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
 394 {
 395         // FIXME: look here
 396 #if 0
 397         MathData & ar = cur.cell();
 398         // remove base-only "scripts"
 399         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 400                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 401                 if (p && p->nargs() == 1) {
 402                         MathData ar = p->nuc();
 403                         erase(i);
 404                         insert(i, ar);
 405                         cur.adjust(i, ar.size() - 1);
 406                 }
 407         }
 408
 409         // glue adjacent font insets of the same kind
 410         for (pos_type i = 0; i + 1 < size(); ++i) {
 411                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 412                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 413                 if (p && q && p->name() == q->name()) {
 414                         p->cell(0).append(q->cell(0));
 415                         erase(i + 1);
 416                         cur.adjust(i, -1);
 417                 }
 418         }
 419 #endif
 420         return false;
 421 }
 422
 423
 424 void InsetMathNest::handleFont
 425         (Cursor & cur, docstring const & arg, char const * const font)
 426 {
 427         handleFont(cur, arg, from_ascii(font));
 428 }
 429
 430
 431 void InsetMathNest::handleFont(Cursor & cur, docstring const & arg,
 432         docstring const & font)
 433 {
 434         cur.recordUndoSelection();
 435
 436         // this whole function is a hack and won't work for incremental font
 437         // changes...
 438         if (cur.inset().asInsetMath()->name() == font)
 439                 cur.handleFont(to_utf8(font));
 440         else
 441                 handleNest(cur, createInsetMath(font, cur.buffer()), arg);
 442 }
 443
 444
 445 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest)
 446 {
 447         handleNest(cur, nest, docstring());
 448 }
 449
 450
 451 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest,
 452         docstring const & arg)
 453 {
 454         CursorSlice i1 = cur.selBegin();
 455         CursorSlice i2 = cur.selEnd();
 456         if (!i1.inset().asInsetMath())
 457                 return;
 458         if (i1.idx() == i2.idx()) {
 459                 // the easy case where only one cell is selected
 460                 cur.handleNest(nest);
 461                 cur.insert(arg);
 462                 return;
 463         }
 464
 465         // multiple selected cells in a simple non-grid inset
 466         if (i1.asInsetMath()->nrows() == 0 || i1.asInsetMath()->ncols() == 0) {
 467                 for (idx_type i = i1.idx(); i <= i2.idx(); ++i) {
 468                         // select cell
 469                         cur.idx() = i;
 470                         cur.pos() = 0;
 471                         cur.resetAnchor();
 472                         cur.pos() = cur.lastpos();
 473                         cur.setSelection();
 474
 475                         // change font of cell
 476                         cur.handleNest(nest);
 477                         cur.insert(arg);
 478
 479                         // cur is in the font inset now. If the loop continues,
 480                         // we need to get outside again for the next cell
 481                         if (i + 1 <= i2.idx())
 482                                 cur.pop_back();
 483                 }
 484                 return;
 485         }
 486
 487         // the complicated case with multiple selected cells in a grid
 488         row_type r1, r2;
 489         col_type c1, c2;
 490         cap::region(i1, i2, r1, r2, c1, c2);
 491         for (row_type row = r1; row <= r2; ++row) {
 492                 for (col_type col = c1; col <= c2; ++col) {
 493                         // select cell
 494                         cur.idx() = i1.asInsetMath()->index(row, col);
 495                         cur.pos() = 0;
 496                         cur.resetAnchor();
 497                         cur.pos() = cur.lastpos();
 498                         cur.setSelection();
 499
 500                         //
 501                         cur.handleNest(nest);
 502                         cur.insert(arg);
 503
 504                         // cur is in the font inset now. If the loop continues,
 505                         // we need to get outside again for the next cell
 506                         if (col + 1 <= c2 || row + 1 <= r2)
 507                                 cur.pop_back();
 508                 }
 509         }
 510 }
 511
 512
 513 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 514 {
 515         cur.recordUndoSelection();
 516         Font font;
 517         bool b;
 518         font.fromString(to_utf8(arg), b);
 519         if (font.fontInfo().color() != Color_inherit &&
 520             font.fontInfo().color() != Color_ignore)
 521                 handleNest(cur, MathAtom(new InsetMathColor(buffer_, true, font.fontInfo().color())));
 522
 523         // FIXME: support other font changes here as well?
 524 }
 525
 526
 527 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 528 {
 529         //LYXERR0("InsetMathNest: request: " << cmd);
 530
 531         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
 532
 533         FuncCode const act = cmd.action();
 534         switch (act) {
 535
 536         case LFUN_CLIPBOARD_PASTE:
 537                 parseflg |= Parse::VERBATIM;
 538                 // fall through
 539         case LFUN_PASTE: {
 540                 if (cur.currentMode() != MATH_MODE)
 541                         parseflg |= Parse::TEXTMODE;
 542                 cur.recordUndoSelection();
 543                 cur.message(_("Paste"));
 544                 replaceSelection(cur);
 545                 docstring topaste;
 546                 if (cmd.argument().empty() && !theClipboard().isInternal())
 547                         topaste = theClipboard().getAsText(frontend::Clipboard::PlainTextType);
 548                 else {
 549                         size_t n = 0;
 550                         idocstringstream is(cmd.argument());
 551                         is >> n;
 552                         topaste = cap::selection(n, buffer().params().documentClassPtr());
 553                 }
 554                 cur.niceInsert(topaste, parseflg, false);
 555                 cur.clearSelection(); // bug 393
 556                 cur.forceBufferUpdate();
 557                 cur.finishUndo();
 558                 break;
 559         }
 560
 561         case LFUN_CUT:
 562                 cur.recordUndo();
 563                 cutSelection(cur, true);
 564                 cur.message(_("Cut"));
 565                 // Prevent stale position >= size crash
 566                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 567                 cur.normalize();
 568                 cur.forceBufferUpdate();
 569                 break;
 570
 571         case LFUN_COPY:
 572                 copySelection(cur);
 573                 cur.message(_("Copy"));
 574                 break;
 575
 576         case LFUN_MOUSE_PRESS:
 577                 lfunMousePress(cur, cmd);
 578                 break;
 579
 580         case LFUN_MOUSE_MOTION:
 581                 lfunMouseMotion(cur, cmd);
 582                 break;
 583
 584         case LFUN_MOUSE_RELEASE:
 585                 lfunMouseRelease(cur, cmd);
 586                 break;
 587
 588         case LFUN_FINISHED_LEFT: // in math, left is backwards
 589         case LFUN_FINISHED_BACKWARD:
 590                 cur.bv().cursor() = cur;
 591                 break;
 592
 593         case LFUN_FINISHED_RIGHT: // in math, right is forward
 594         case LFUN_FINISHED_FORWARD:
 595                 ++cur.pos();
 596                 cur.bv().cursor() = cur;
 597                 break;
 598
 599         case LFUN_WORD_RIGHT:
 600         case LFUN_WORD_LEFT:
 601         case LFUN_WORD_BACKWARD:
 602         case LFUN_WORD_FORWARD:
 603         case LFUN_CHAR_RIGHT:
 604         case LFUN_CHAR_LEFT:
 605         case LFUN_CHAR_BACKWARD:
 606         case LFUN_CHAR_FORWARD:
 607                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 608                 // fall through
 609         case LFUN_WORD_RIGHT_SELECT:
 610         case LFUN_WORD_LEFT_SELECT:
 611         case LFUN_WORD_BACKWARD_SELECT:
 612         case LFUN_WORD_FORWARD_SELECT:
 613         case LFUN_CHAR_RIGHT_SELECT:
 614         case LFUN_CHAR_LEFT_SELECT:
 615         case LFUN_CHAR_BACKWARD_SELECT:
 616         case LFUN_CHAR_FORWARD_SELECT: {
 617                 // are we in a selection?
 618                 bool select = (act == LFUN_WORD_RIGHT_SELECT
 619                                            || act == LFUN_WORD_LEFT_SELECT
 620                                            || act == LFUN_WORD_BACKWARD_SELECT
 621                                            || act == LFUN_WORD_FORWARD_SELECT
 622                                || act == LFUN_CHAR_RIGHT_SELECT
 623                                            || act == LFUN_CHAR_LEFT_SELECT
 624                                            || act == LFUN_CHAR_BACKWARD_SELECT
 625                                            || act == LFUN_CHAR_FORWARD_SELECT);
 626                 // select words
 627                 bool word = (act == LFUN_WORD_RIGHT_SELECT
 628                              || act == LFUN_WORD_LEFT_SELECT
 629                              || act == LFUN_WORD_BACKWARD_SELECT
 630                              || act == LFUN_WORD_FORWARD_SELECT
 631                              || act == LFUN_WORD_RIGHT
 632                              || act == LFUN_WORD_LEFT
 633                              || act == LFUN_WORD_BACKWARD
 634                              || act == LFUN_WORD_FORWARD);
 635                 // are we moving forward or backwards?
 636                 // If the command was RIGHT or LEFT, then whether we're moving forward
 637                 // or backwards depends on the cursor movement mode (logical or visual):
 638                 //  * in visual mode, since math is always LTR, right -> forward,
 639                 //    left -> backwards
 640                 //  * in logical mode, the mapping is determined by the
 641                 //    reverseDirectionNeeded() function
 642
 643                 bool forward;
 644                 FuncCode finish_lfun;
 645
 646                 if (act == LFUN_CHAR_FORWARD
 647                     || act == LFUN_CHAR_FORWARD_SELECT
 648                     || act == LFUN_WORD_FORWARD
 649                     || act == LFUN_WORD_FORWARD_SELECT) {
 650                         forward = true;
 651                         finish_lfun = LFUN_FINISHED_FORWARD;
 652                 }
 653                 else if (act == LFUN_CHAR_BACKWARD
 654                          || act == LFUN_CHAR_BACKWARD_SELECT
 655                          || act == LFUN_WORD_BACKWARD
 656                          || act == LFUN_WORD_BACKWARD_SELECT) {
 657                         forward = false;
 658                         finish_lfun = LFUN_FINISHED_BACKWARD;
 659                 }
 660                 else {
 661                         bool right = (act == LFUN_CHAR_RIGHT_SELECT
 662                                                   || act == LFUN_CHAR_RIGHT
 663                                       || act == LFUN_WORD_RIGHT_SELECT
 664                                       || act == LFUN_WORD_RIGHT);
 665                         if (lyxrc.visual_cursor || !cur.reverseDirectionNeeded())
 666                                 forward = right;
 667                         else
 668                                 forward = !right;
 669
 670                         if (right)
 671                                 finish_lfun = LFUN_FINISHED_RIGHT;
 672                         else
 673                                 finish_lfun = LFUN_FINISHED_LEFT;
 674                 }
 675                 // Now that we know exactly what we want to do, let's do it!
 676                 cur.selHandle(select);
 677                 cur.clearTargetX();
 678                 cur.macroModeClose();
 679                 // try moving forward or backwards as necessary...
 680                 if (!(forward ? cur.mathForward(word) : cur.mathBackward(word))) {
 681                         // ... and if movement failed, then finish forward or backwards
 682                         // as necessary
 683                         cmd = FuncRequest(finish_lfun);
 684                         cur.undispatched();
 685                 }
 686                 break;
 687         }
 688
 689         case LFUN_DOWN:
 690         case LFUN_UP:
 691         case LFUN_PARAGRAPH_UP:
 692         case LFUN_PARAGRAPH_DOWN:
 693                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 694                 // fall through
 695         case LFUN_DOWN_SELECT:
 696         case LFUN_UP_SELECT:
 697         case LFUN_PARAGRAPH_UP_SELECT:
 698         case LFUN_PARAGRAPH_DOWN_SELECT: {
 699                 // close active macro
 700                 if (cur.inMacroMode()) {
 701                         cur.macroModeClose();
 702                         break;
 703                 }
 704
 705                 // stop/start the selection
 706                 bool select = act == LFUN_DOWN_SELECT
 707                         || act == LFUN_UP_SELECT
 708                         || act == LFUN_PARAGRAPH_DOWN_SELECT
 709                         || act == LFUN_PARAGRAPH_UP_SELECT;
 710                 cur.selHandle(select);
 711
 712                 // handle autocorrect:
 713                 if (lyxrc.autocorrection_math && cur.autocorrect()) {
 714                         cur.autocorrect() = false;
 715                         cur.message(_("Autocorrect Off ('!' to enter)"));
 716                 }
 717
 718                 // go up/down
 719                 bool up = act == LFUN_UP || act == LFUN_UP_SELECT
 720                         || act == LFUN_PARAGRAPH_UP || act == LFUN_PARAGRAPH_UP_SELECT;
 721                 bool successful = cur.upDownInMath(up);
 722                 if (successful)
 723                         break;
 724
 725                 if (cur.fixIfBroken())
 726                         // FIXME: Something bad happened. We pass the corrected Cursor
 727                         // instead of letting things go worse.
 728                         break;
 729
 730                 // We did not manage to move the cursor.
 731                 cur.undispatched();
 732                 break;
 733         }
 734
 735         case LFUN_MOUSE_DOUBLE:
 736         case LFUN_WORD_SELECT:
 737                 cur.pos() = 0;
 738                 cur.bv().mouseSetCursor(cur);
 739                 cur.pos() = cur.lastpos();
 740                 cur.bv().mouseSetCursor(cur, true);
 741                 break;
 742
 743         case LFUN_MOUSE_TRIPLE:
 744                 cur.idx() = 0;
 745                 cur.pos() = 0;
 746                 cur.bv().mouseSetCursor(cur);
 747                 cur.idx() = cur.lastidx();
 748                 cur.pos() = cur.lastpos();
 749                 cur.bv().mouseSetCursor(cur, true);
 750                 break;
 751
 752         case LFUN_LINE_BEGIN:
 753                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 754                 // fall through
 755         case LFUN_LINE_BEGIN_SELECT:
 756                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
 757                                 act == LFUN_WORD_LEFT_SELECT ||
 758                                 act == LFUN_LINE_BEGIN_SELECT);
 759                 cur.macroModeClose();
 760                 if (cur.pos() != 0) {
 761                         cur.pos() = 0;
 762                 } else if (cur.col() != 0) {
 763                         cur.idx() -= cur.col();
 764                         cur.pos() = 0;
 765                 } else if (cur.idx() != 0) {
 766                         cur.idx() = 0;
 767                         cur.pos() = 0;
 768                 } else {
 769                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 770                         cur.undispatched();
 771                 }
 772                 break;
 773
 774         case LFUN_LINE_END:
 775                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 776                 // fall through
 777         case LFUN_LINE_END_SELECT:
 778                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
 779                                 act == LFUN_WORD_RIGHT_SELECT ||
 780                                 act == LFUN_LINE_END_SELECT);
 781                 cur.macroModeClose();
 782                 cur.clearTargetX();
 783                 if (cur.pos() != cur.lastpos()) {
 784                         cur.pos() = cur.lastpos();
 785                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 786                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 787                         cur.pos() = cur.lastpos();
 788                 } else if (cur.idx() != cur.lastidx()) {
 789                         cur.idx() = cur.lastidx();
 790                         cur.pos() = cur.lastpos();
 791                 } else {
 792                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 793                         cur.undispatched();
 794                 }
 795                 break;
 796
 797         case LFUN_CELL_FORWARD:
 798                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 799                 cur.inset().idxNext(cur);
 800                 break;
 801
 802         case LFUN_CELL_BACKWARD:
 803                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
 804                 cur.inset().idxPrev(cur);
 805                 break;
 806
 807         case LFUN_WORD_DELETE_BACKWARD:
 808         case LFUN_CHAR_DELETE_BACKWARD:
 809                 if (cur.pos() == 0)
 810                         // May affect external cell:
 811                         cur.recordUndoInset();
 812                 else if (!cur.inMacroMode())
 813                         cur.recordUndoSelection();
 814                 // if the inset can not be removed from within, delete it
 815                 if (!cur.backspace(cmd.getArg(0) == "force")) {
 816                         FuncRequest newcmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD, "force");
 817                         cur.innerText()->dispatch(cur, newcmd);
 818                 }
 819                 break;
 820
 821         case LFUN_WORD_DELETE_FORWARD:
 822         case LFUN_CHAR_DELETE_FORWARD:
 823                 if (cur.pos() == cur.lastpos())
 824                         // May affect external cell:
 825                         cur.recordUndoInset();
 826                 else
 827                         cur.recordUndoSelection();
 828                 // if the inset can not be removed from within, delete it
 829                 if (!cur.erase(cmd.getArg(0) == "force")) {
 830                         FuncRequest newcmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD, "force");
 831                         cur.innerText()->dispatch(cur, newcmd);
 832                 }
 833                 break;
 834
 835         case LFUN_ESCAPE:
 836                 if (cur.selection())
 837                         cur.clearSelection();
 838                 else  {
 839                         if (cur.inMacroMode())
 840                                 cur.macroModeClose(true);
 841                         else {
 842                                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 843                                 cur.undispatched();
 844                         }
 845                 }
 846                 break;
 847
 848         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 849         // that is traversed by a single <CursorLeft>/<CursorRight>.
 850         case LFUN_INSET_TOGGLE:
 851                 cur.recordUndo();
 852                 lock(!lock());
 853                 cur.popForward();
 854                 break;
 855
 856         case LFUN_SELF_INSERT:
 857                 // special case first for big delimiters
 858                 if (cmd.argument().size() != 1 && interpretString(cur, cmd.argument()))
 859                         break;
 860
 861                 for (char_type c : cmd.argument()) {
 862                         // Don't record undo steps if we are in macro mode and thus
 863                         // cmd.argument is the next character of the macro name.
 864                         // Otherwise we'll get an invalid cursor if we undo after
 865                         // the macro was finished and the macro is a known command,
 866                         // e.g. sqrt. Cursor::macroModeClose replaces in this case
 867                         // the InsetMathUnknown with name "frac" by an empty
 868                         // InsetMathFrac -> a pos value > 0 is invalid.
 869                         // A side effect is that an undo before the macro is finished
 870                         // undoes the complete macro, not only the last character.
 871                         // At the time we hit '\' we are not in macro mode, still.
 872                         if (!cur.inMacroMode())
 873                                 cur.recordUndoSelection();
 874
 875                         // special handling of space. If we insert an inset
 876                         // via macro mode, we want to put the cursor inside it
 877                         // if relevant. Think typing "\frac<space>".
 878                         if (c == ' '
 879                                 && cur.inMacroMode() && cur.macroName() != "\\"
 880                                 && cur.macroModeClose() && cur.pos() > 0) {
 881                                 MathAtom const atom = cur.prevAtom();
 882                                 if (atom->asNestInset() && atom->isActive()) {
 883                                         cur.posBackward();
 884                                         cur.pushBackward(*cur.nextInset());
 885                                 }
 886                         } else if (!interpretChar(cur, c)) {
 887                                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 888                                 cur.undispatched();
 889                                 // FIXME: can we avoid skipping the end of the string?
 890                                 break;
 891                         }
 892                 }
 893                 break;
 894
 895         //case LFUN_SERVER_GET_XY:
 896         //      break;
 897
 898         case LFUN_SERVER_SET_XY: {
 899                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 900                 int x = 0;
 901                 int y = 0;
 902                 istringstream is(to_utf8(cmd.argument()));
 903                 is >> x >> y;
 904                 cur.setTargetX(x);
 905                 break;
 906         }
 907
 908         // Special casing for superscript in case of LyX handling
 909         // dead-keys:
 910         case LFUN_ACCENT_CIRCUMFLEX:
 911                 if (cmd.argument().empty()) {
 912                         // do superscript if LyX handles
 913                         // deadkeys
 914                         cur.recordUndoSelection();
 915                         script(cur, true, grabAndEraseSelection(cur));
 916                 }
 917                 break;
 918
 919         case LFUN_ACCENT_UMLAUT:
 920         case LFUN_ACCENT_ACUTE:
 921         case LFUN_ACCENT_GRAVE:
 922         case LFUN_ACCENT_BREVE:
 923         case LFUN_ACCENT_DOT:
 924         case LFUN_ACCENT_MACRON:
 925         case LFUN_ACCENT_CARON:
 926         case LFUN_ACCENT_TILDE:
 927         case LFUN_ACCENT_CEDILLA:
 928         case LFUN_ACCENT_CIRCLE:
 929         case LFUN_ACCENT_UNDERDOT:
 930         case LFUN_ACCENT_TIE:
 931         case LFUN_ACCENT_OGONEK:
 932         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 933                 break;
 934
 935         //  Math fonts
 936         case LFUN_TEXTSTYLE_APPLY:
 937         case LFUN_TEXTSTYLE_UPDATE:
 938                 handleFont2(cur, cmd.argument());
 939                 break;
 940
 941         case LFUN_FONT_BOLD:
 942                 if (currentMode() != MATH_MODE)
 943                         handleFont(cur, cmd.argument(), "textbf");
 944                 else
 945                         handleFont(cur, cmd.argument(), "mathbf");
 946                 break;
 947         case LFUN_FONT_BOLDSYMBOL:
 948                 if (currentMode() != MATH_MODE)
 949                         handleFont(cur, cmd.argument(), "textbf");
 950                 else
 951                         handleFont(cur, cmd.argument(), "boldsymbol");
 952                 break;
 953         case LFUN_FONT_SANS:
 954                 if (currentMode() != MATH_MODE)
 955                         handleFont(cur, cmd.argument(), "textsf");
 956                 else
 957                         handleFont(cur, cmd.argument(), "mathsf");
 958                 break;
 959         case LFUN_FONT_EMPH:
 960                 if (currentMode() != MATH_MODE)
 961                         handleFont(cur, cmd.argument(), "emph");
 962                 else
 963                         handleFont(cur, cmd.argument(), "mathcal");
 964                 break;
 965         case LFUN_FONT_ROMAN:
 966                 if (currentMode() != MATH_MODE)
 967                         handleFont(cur, cmd.argument(), "textrm");
 968                 else
 969                         handleFont(cur, cmd.argument(), "mathrm");
 970                 break;
 971         case LFUN_FONT_TYPEWRITER:
 972                 if (currentMode() != MATH_MODE)
 973                         handleFont(cur, cmd.argument(), "texttt");
 974                 else
 975                         handleFont(cur, cmd.argument(), "mathtt");
 976                 break;
 977         case LFUN_FONT_FRAK:
 978                 handleFont(cur, cmd.argument(), "mathfrak");
 979                 break;
 980         case LFUN_FONT_ITAL:
 981                 if (currentMode() != MATH_MODE)
 982                         handleFont(cur, cmd.argument(), "textit");
 983                 else
 984                         handleFont(cur, cmd.argument(), "mathit");
 985                 break;
 986         case LFUN_FONT_NOUN:
 987                 if (currentMode() != MATH_MODE)
 988                         // FIXME: should be "noun"
 989                         handleFont(cur, cmd.argument(), "textsc");
 990                 else
 991                         handleFont(cur, cmd.argument(), "mathbb");
 992                 break;
 993         case LFUN_FONT_DEFAULT:
 994                 handleFont(cur, cmd.argument(), "textnormal");
 995                 break;
 996         case LFUN_FONT_UNDERLINE:
 997                 cur.recordUndo();
 998                 cur.handleNest(createInsetMath("underline", cur.buffer()));
 999                 break;
1000
1001         case LFUN_MATH_MODE: {
1002 #if 1
1003                 // ignore math-mode on when already in math mode
1004                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
1005                         break;
1006                 cur.recordUndoSelection();
1007                 cur.macroModeClose();
1008                 docstring const save_selection = grabAndEraseSelection(cur);
1009                 selClearOrDel(cur);
1010                 if (currentMode() != Inset::MATH_MODE)
1011                         cur.plainInsert(MathAtom(new InsetMathEnsureMath(buffer_)));
1012                 else
1013                         cur.plainInsert(createInsetMath("text", buffer_));
1014                 cur.posBackward();
1015                 cur.pushBackward(*cur.nextInset());
1016                 cur.niceInsert(save_selection);
1017                 cur.forceBufferUpdate();
1018 #else
1019                 if (currentMode() == Inset::TEXT_MODE) {
1020                         cur.recordUndoSelection();
1021                         cur.niceInsert(MathAtom(new InsetMathHull("simple", cur.buffer())));
1022                         cur.message(_("create new math text environment ($...$)"));
1023                 } else {
1024                         handleFont(cur, cmd.argument(), "textrm");
1025                         cur.message(_("entered math text mode (textrm)"));
1026                 }
1027 #endif
1028                 break;
1029         }
1030
1031         case LFUN_REGEXP_MODE: {
1032                 InsetMath * im = cur.inset().asInsetMath();
1033                 if (im) {
1034                         InsetMathHull * i = im->asHullInset();
1035                         if (i && i->getType() == hullRegexp) {
1036                                 cur.message(_("Already in regular expression mode"));
1037                                 break;
1038                         }
1039                 }
1040                 cur.macroModeClose();
1041                 docstring const save_selection = grabAndEraseSelection(cur);
1042                 selClearOrDel(cur);
1043                 cur.plainInsert(MathAtom(new InsetMathHull(buffer_, hullRegexp)));
1044                 cur.posBackward();
1045                 cur.pushBackward(*cur.nextInset());
1046                 cur.niceInsert(save_selection);
1047                 cur.message(_("Regular expression editor mode"));
1048                 break;
1049         }
1050
1051         case LFUN_MATH_FONT_STYLE: {
1052                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, '\\' + cmd.argument());
1053                 doDispatch(cur, fr);
1054                 break;
1055         }
1056
1057         case LFUN_MATH_SIZE: {
1058                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, cmd.argument());
1059                 doDispatch(cur, fr);
1060                 break;
1061         }
1062
1063         case LFUN_MATH_MATRIX: {
1064                 cur.recordUndo();
1065                 unsigned int m = 1;
1066                 unsigned int n = 1;
1067                 docstring v_align;
1068                 docstring h_align;
1069                 idocstringstream is(cmd.argument());
1070                 is >> m >> n >> v_align >> h_align;
1071                 if (m < 1)
1072                         m = 1;
1073                 if (n < 1)
1074                         n = 1;
1075                 v_align += 'c';
1076                 cur.niceInsert(MathAtom(new InsetMathArray(buffer_,
1077                         from_ascii("array"), m, n, (char)v_align[0], h_align)));
1078                 break;
1079         }
1080
1081         case LFUN_MATH_AMS_MATRIX: {
1082                 cur.recordUndo();
1083                 unsigned int m = 1;
1084                 unsigned int n = 1;
1085                 docstring name = from_ascii("matrix");
1086                 idocstringstream is(cmd.argument());
1087                 is >> m >> n >> name;
1088                 if (m < 1)
1089                         m = 1;
1090                 if (n < 1)
1091                         n = 1;
1092                 // check if we have a valid decoration
1093                 if (name != "pmatrix" && name != "bmatrix"
1094                         && name != "Bmatrix" && name != "vmatrix"
1095                         && name != "Vmatrix" && name != "matrix")
1096                         name = from_ascii("matrix");
1097
1098                 cur.niceInsert(
1099                         MathAtom(new InsetMathAMSArray(buffer_, name, m, n)));
1100                 break;
1101         }
1102
1103         case LFUN_MATH_DELIM: {
1104                 docstring ls;
1105                 docstring rs = split(cmd.argument(), ls, ' ');
1106                 // Reasonable default values
1107                 if (ls.empty())
1108                         ls = '(';
1109                 if (rs.empty())
1110                         rs = ')';
1111                 cur.recordUndo();
1112                 cur.handleNest(MathAtom(new InsetMathDelim(buffer_, ls, rs)));
1113                 break;
1114         }
1115
1116         case LFUN_MATH_BIGDELIM: {
1117                 docstring const lname  = from_utf8(cmd.getArg(0));
1118                 docstring const ldelim = from_utf8(cmd.getArg(1));
1119                 docstring const rname  = from_utf8(cmd.getArg(2));
1120                 docstring const rdelim = from_utf8(cmd.getArg(3));
1121                 latexkeys const * l = in_word_set(lname);
1122                 bool const have_l = l && l->inset == "big" &&
1123                                     InsetMathBig::isBigInsetDelim(ldelim);
1124                 l = in_word_set(rname);
1125                 bool const have_r = l && l->inset == "big" &&
1126                                     InsetMathBig::isBigInsetDelim(rdelim);
1127                 // We mimic LFUN_MATH_DELIM in case we have an empty left
1128                 // or right delimiter.
1129                 if (have_l || have_r) {
1130                         cur.recordUndo();
1131                         docstring const selection = grabAndEraseSelection(cur);
1132                         selClearOrDel(cur);
1133                         if (have_l)
1134                                 cur.insert(MathAtom(new InsetMathBig(lname,
1135                                                                 ldelim)));
1136                         // first insert the right delimiter and then go back
1137                         // and re-insert the selection (bug 7088)
1138                         if (have_r) {
1139                                 cur.insert(MathAtom(new InsetMathBig(rname,
1140                                                                 rdelim)));
1141                                 cur.posBackward();
1142                         }
1143                         cur.niceInsert(selection);
1144                 }
1145                 // Don't call cur.undispatched() if we did nothing, this would
1146                 // lead to infinite recursion via Text::dispatch().
1147                 break;
1148         }
1149
1150         case LFUN_SPACE_INSERT: {
1151                 cur.recordUndoSelection();
1152                 string const name = cmd.getArg(0);
1153                 if (name == "normal")
1154                         cur.insert(MathAtom(new InsetMathSpace(" ", "")));
1155                 else if (name == "protected")
1156                         cur.insert(MathAtom(new InsetMathSpace("~", "")));
1157                 else if (name == "thin" || name == "med" || name == "thick")
1158                         cur.insert(MathAtom(new InsetMathSpace(name + "space", "")));
1159                 else if (name == "hfill*")
1160                         cur.insert(MathAtom(new InsetMathSpace("hspace*{\\fill}", "")));
1161                 else if (name == "quad" || name == "qquad" ||
1162                          name == "enspace" || name == "enskip" ||
1163                          name == "negthinspace" || name == "negmedspace" ||
1164                          name == "negthickspace" || name == "hfill")
1165                         cur.insert(MathAtom(new InsetMathSpace(name, "")));
1166                 else if (name == "hspace" || name == "hspace*") {
1167                         string const len = cmd.getArg(1);
1168                         if (len.empty() || !isValidLength(len)) {
1169                                 lyxerr << "LyX function 'space-insert " << name << "' "
1170                                           "needs a valid length argument." << endl;
1171                                 break;
1172                         }
1173                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1174                 } else
1175                         cur.insert(MathAtom(new InsetMathSpace));
1176                 break;
1177         }
1178
1179         case LFUN_MATH_SPACE:
1180                 cur.recordUndoSelection();
1181                 if (cmd.argument().empty())
1182                         cur.insert(MathAtom(new InsetMathSpace));
1183                 else {
1184                         string const name = cmd.getArg(0);
1185                         string const len = cmd.getArg(1);
1186                         cur.insert(MathAtom(new InsetMathSpace(name, len)));
1187                 }
1188                 break;
1189
1190         case LFUN_ERT_INSERT:
1191                 // interpret this as if a backslash was typed
1192                 cur.recordUndo();
1193                 interpretChar(cur, '\\');
1194                 break;
1195
1196         case LFUN_MATH_SUBSCRIPT:
1197                 // interpret this as if a _ was typed
1198                 cur.recordUndoSelection();
1199                 interpretChar(cur, '_');
1200                 break;
1201
1202         case LFUN_MATH_SUPERSCRIPT:
1203                 // interpret this as if a ^ was typed
1204                 cur.recordUndoSelection();
1205                 interpretChar(cur, '^');
1206                 break;
1207
1208         case LFUN_MATH_MACRO_FOLD:
1209         case LFUN_MATH_MACRO_UNFOLD: {
1210                 Cursor it = cur;
1211                 bool fold = act == LFUN_MATH_MACRO_FOLD;
1212                 bool found = findMacroToFoldUnfold(it, fold);
1213                 if (found) {
1214                         InsetMathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1215                         cur.recordUndoInset();
1216                         if (fold)
1217                                 macro->fold(cur);
1218                         else
1219                                 macro->unfold(cur);
1220                 }
1221                 break;
1222         }
1223
1224         case LFUN_QUOTE_INSERT:
1225                 // interpret this as if a straight " was typed
1226                 cur.recordUndoSelection();
1227                 interpretChar(cur, '\"');
1228                 break;
1229
1230 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1231 // handling such that "self-insert" works on "arbitrary stuff" too, and
1232 // math-insert only handles special math things like "matrix".
1233         case LFUN_MATH_INSERT: {
1234                 cur.recordUndoSelection();
1235                 if (cmd.argument() == "^" || cmd.argument() == "_")
1236                         interpretChar(cur, cmd.argument()[0]);
1237                 else {
1238                         MathData ar;
1239                         asArray(cmd.argument(), ar);
1240                         if (cur.selection() && ar.size() == 1
1241                             && ar[0]->asNestInset()
1242                             && ar[0]->asNestInset()->nargs() > 1)
1243                                 handleNest(cur, ar[0]);
1244                         else
1245                                 cur.niceInsert(cmd.argument());
1246                 }
1247                 break;
1248         }
1249
1250         case LFUN_DIALOG_SHOW_NEW_INSET: {
1251                 docstring const & name = cmd.argument();
1252                 string data;
1253                 if (name == "ref") {
1254                         InsetMathRef tmp(buffer_, name);
1255                         data = tmp.createDialogStr();
1256                         cur.bv().showDialog(to_utf8(name), data);
1257                 } else if (name == "mathspace") {
1258                         cur.bv().showDialog(to_utf8(name));
1259                 }
1260                 break;
1261         }
1262
1263         case LFUN_INSET_INSERT: {
1264                 MathData ar;
1265                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1266                         cur.recordUndoSelection();
1267                         cur.insert(ar);
1268                         cur.forceBufferUpdate();
1269                 } else
1270                         cur.undispatched();
1271                 break;
1272         }
1273         case LFUN_INSET_DISSOLVE:
1274                 if (!asHullInset()) {
1275                         cur.recordUndoInset();
1276                         cur.pullArg();
1277                 }
1278                 break;
1279
1280         default:
1281                 InsetMath::doDispatch(cur, cmd);
1282                 break;
1283         }
1284 }
1285
1286
1287 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1288         // look for macro to open/close, but stay in mathed
1289         for (; !it.empty(); it.pop_back()) {
1290
1291                 // go backward through the current cell
1292                 Inset * inset = it.nextInset();
1293                 while (inset && inset->asInsetMath()) {
1294                         InsetMathMacro * macro = inset->asInsetMath()->asMacro();
1295                         if (macro) {
1296                                 // found the an macro to open/close?
1297                                 if (macro->folded() != fold)
1298                                         return true;
1299
1300                                 // Wrong folding state.
1301                                 // If this was the first we see in this slice, look further left,
1302                                 // otherwise go up.
1303                                 if (inset != it.nextInset())
1304                                         break;
1305                         }
1306
1307                         // go up if this was the left most position
1308                         if (it.pos() == 0)
1309                                 break;
1310
1311                         // go left
1312                         it.pos()--;
1313                         inset = it.nextInset();
1314                 }
1315         }
1316
1317         return false;
1318 }
1319
1320
1321 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1322                 FuncStatus & flag) const
1323 {
1324         // the font related toggles
1325         //string tc = "mathnormal";
1326         bool ret = true;
1327         string const arg = to_utf8(cmd.argument());
1328         switch (cmd.action()) {
1329         case LFUN_INSET_MODIFY:
1330                 flag.setEnabled(false);
1331                 break;
1332 #if 0
1333         case LFUN_INSET_MODIFY:
1334                 // FIXME: check temporarily disabled
1335                 // valign code
1336                 char align = mathcursor::valign();
1337                 if (align == '\0') {
1338                         enable = false;
1339                         break;
1340                 }
1341                 if (cmd.argument().empty()) {
1342                         flag.clear();
1343                         break;
1344                 }
1345                 if (!contains("tcb", cmd.argument()[0])) {
1346                         enable = false;
1347                         break;
1348                 }
1349                 flag.setOnOff(cmd.argument()[0] == align);
1350                 break;
1351 #endif
1352         /// We have to handle them since 1.4 blocks all unhandled actions
1353         case LFUN_FONT_ITAL:
1354         case LFUN_FONT_BOLD:
1355         case LFUN_FONT_BOLDSYMBOL:
1356         case LFUN_FONT_SANS:
1357         case LFUN_FONT_EMPH:
1358         case LFUN_FONT_TYPEWRITER:
1359         case LFUN_FONT_NOUN:
1360         case LFUN_FONT_ROMAN:
1361         case LFUN_FONT_DEFAULT:
1362                 flag.setEnabled(true);
1363                 break;
1364
1365         // we just need to be in math mode to enable that
1366         case LFUN_MATH_SIZE:
1367         case LFUN_MATH_SPACE:
1368         case LFUN_MATH_EXTERN:
1369                 flag.setEnabled(true);
1370                 break;
1371
1372         case LFUN_FONT_UNDERLINE:
1373         case LFUN_FONT_FRAK:
1374                 flag.setEnabled(currentMode() != TEXT_MODE);
1375                 break;
1376
1377         case LFUN_MATH_FONT_STYLE: {
1378                 bool const textarg =
1379                         arg == "textbf"   || arg == "textsf" ||
1380                         arg == "textrm"   || arg == "textmd" ||
1381                         arg == "textit"   || arg == "textsc" ||
1382                         arg == "textsl"   || arg == "textup" ||
1383                         arg == "texttt"   || arg == "textbb" ||
1384                         arg == "textnormal";
1385                 flag.setEnabled(currentMode() != TEXT_MODE || textarg);
1386                 break;
1387         }
1388
1389         case LFUN_MATH_MODE:
1390                 // forbid "math-mode on" in math mode to prevent irritating
1391                 // behaviour of menu entries (bug 6709)
1392                 flag.setEnabled(currentMode() == TEXT_MODE || arg != "on");
1393                 break;
1394
1395         case LFUN_MATH_INSERT:
1396                 flag.setEnabled(currentMode() != TEXT_MODE);
1397                 break;
1398
1399         case LFUN_MATH_AMS_MATRIX:
1400         case LFUN_MATH_MATRIX:
1401                 flag.setEnabled(currentMode() == MATH_MODE);
1402                 break;
1403
1404         case LFUN_INSET_INSERT: {
1405                 // Don't test createMathInset_fromDialogStr(), since
1406                 // getStatus is not called with a valid reference and the
1407                 // dialog would not be applyable.
1408                 string const name = cmd.getArg(0);
1409                 flag.setEnabled(name == "ref" || name == "mathspace");
1410                 break;
1411         }
1412
1413         case LFUN_DIALOG_SHOW_NEW_INSET: {
1414                 docstring const & name = cmd.argument();
1415                 if (name == "space")
1416                         flag.setEnabled(false);
1417                 break;
1418         }
1419
1420
1421         case LFUN_MATH_DELIM:
1422         case LFUN_MATH_BIGDELIM:
1423                 // Don't do this with multi-cell selections
1424                 flag.setEnabled(cur.selBegin().idx() == cur.selEnd().idx());
1425                 break;
1426
1427         case LFUN_MATH_MACRO_FOLD:
1428         case LFUN_MATH_MACRO_UNFOLD: {
1429                 Cursor it = cur;
1430                 bool found = findMacroToFoldUnfold(it, cmd.action() == LFUN_MATH_MACRO_FOLD);
1431                 flag.setEnabled(found);
1432                 break;
1433         }
1434
1435         case LFUN_SPECIALCHAR_INSERT:
1436         case LFUN_SCRIPT_INSERT:
1437                 // FIXME: These would probably make sense in math-text mode
1438                 flag.setEnabled(false);
1439                 break;
1440
1441         case LFUN_CAPTION_INSERT:
1442                 flag.setEnabled(false);
1443                 break;
1444
1445         case LFUN_SPACE_INSERT: {
1446                 docstring const & name = cmd.argument();
1447                 if (name == "visible")
1448                         flag.setEnabled(false);
1449                 break;
1450         }
1451
1452         case LFUN_INSET_DISSOLVE:
1453                 flag.setEnabled(!asHullInset());
1454                 break;
1455
1456         case LFUN_PASTE: {
1457                 docstring const & name = cmd.argument();
1458                 if (name == "html" || name == "latex")
1459                         flag.setEnabled(false);
1460                 break;
1461         }
1462
1463         default:
1464                 ret = false;
1465                 break;
1466         }
1467         return ret;
1468 }
1469
1470
1471 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1472 {
1473         cur.push(*this);
1474         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_LEFT ||
1475                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1476         enter_front ? idxFirst(cur) : idxLast(cur);
1477         cur.resetAnchor();
1478         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1479 }
1480
1481
1482 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1483 {
1484         int idx_min = -1;
1485         int dist_min = 1000000;
1486         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1487                 int const d = cell(i).dist(cur.bv(), x, y);
1488                 if (d < dist_min) {
1489                         dist_min = d;
1490                         idx_min = i;
1491                 }
1492         }
1493         if (idx_min == -1)
1494                 return this;
1495
1496         MathData & ar = cell(idx_min);
1497         cur.push(*this);
1498         cur.idx() = idx_min;
1499         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1500
1501         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1502         if (dist_min == 0) {
1503                 // hit inside cell
1504                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1505                         if (ar[i]->covers(cur.bv(), x, y))
1506                                 return ar[i].nucleus()->editXY(cur, x, y);
1507         }
1508         return this;
1509 }
1510
1511
1512 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1513 {
1514         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1515         BufferView & bv = cur.bv();
1516         if (cmd.button() == mouse_button::button3) {
1517                 // Don't do anything if we right-click a
1518                 // selection, a context menu will popup.
1519                 if (bv.cursor().selection() && cur >= bv.cursor().selectionBegin()
1520                       && cur < bv.cursor().selectionEnd()) {
1521                         cur.noScreenUpdate();
1522                         return;
1523                 }
1524         }
1525
1526         // set cursor after the inset if x is nearer to that position (bug 9748)
1527         cur.moveToClosestEdge(cmd.x(), true);
1528
1529         bool do_selection = cmd.button() == mouse_button::button1
1530                 && cmd.modifier() == ShiftModifier;
1531         bv.mouseSetCursor(cur, do_selection);
1532         if (cmd.button() == mouse_button::button1) {
1533                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1534                 // Update the cursor update flags as needed:
1535                 //
1536                 // Update::Decoration: tells to update the decoration
1537                 //                     (visual box corners that define
1538                 //                     the inset)/
1539                 // Update::FitCursor: adjust the screen to the cursor
1540                 //                    position if needed
1541                 // cur.result().update(): don't overwrite previously set flags.
1542                 cur.screenUpdateFlags(Update::Decoration | Update::FitCursor
1543                                 | cur.result().screenUpdate());
1544         } else if (cmd.button() == mouse_button::button2 && lyxrc.mouse_middlebutton_paste) {
1545                 if (cap::selection()) {
1546                         // See comment in Text::dispatch why we do this
1547                         cap::copySelectionToStack();
1548                         cmd = FuncRequest(LFUN_PASTE, "0");
1549                         doDispatch(bv.cursor(), cmd);
1550                 } else {
1551                         MathData ar;
1552                         asArray(theSelection().get(), ar);
1553                         bv.cursor().insert(ar);
1554                 }
1555         }
1556 }
1557
1558
1559 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1560 {
1561         // only select with button 1
1562         if (cmd.button() != mouse_button::button1)
1563                 return;
1564
1565         Cursor & bvcur = cur.bv().cursor();
1566
1567         // ignore motions deeper nested than the real anchor
1568         if (!bvcur.realAnchor().hasPart(cur)) {
1569                 cur.undispatched();
1570                 return;
1571         }
1572
1573         // set cursor after the inset if x is nearer to that position (bug 9748)
1574         cur.moveToClosestEdge(cmd.x());
1575
1576         CursorSlice old = bvcur.top();
1577
1578         // We continue with our existing selection or start a new one, so don't
1579         // reset the anchor.
1580         bvcur.setCursor(cur);
1581         // Did we actually move?
1582         if (cur.top() == old)
1583                 // We didn't move one iota, so no need to change selection status
1584                 // or update the screen.
1585                 cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1586         else
1587                 bvcur.setSelection();
1588 }
1589
1590
1591 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1592 {
1593         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1594
1595         if (cmd.button() == mouse_button::button1) {
1596                 if (!cur.selection())
1597                         cur.noScreenUpdate();
1598                 else {
1599                         Cursor & bvcur = cur.bv().cursor();
1600                         bvcur.selection(true);
1601                 }
1602                 return;
1603         }
1604
1605         cur.undispatched();
1606 }
1607
1608
1609 bool InsetMathNest::interpretChar(Cursor & cur, char_type const c)
1610 {
1611         //lyxerr << "interpret 2: '" << c << "'" << endl;
1612         docstring save_selection;
1613         if (c == '^' || c == '_')
1614                 save_selection = grabAndEraseSelection(cur);
1615
1616         cur.clearTargetX();
1617         Buffer * buf = cur.buffer();
1618
1619         // handle macroMode
1620         if (cur.inMacroMode()) {
1621                 docstring name = cur.macroName();
1622
1623                 /// are we currently typing '#1' or '#2' or...?
1624                 if (name == "\\#") {
1625                         cur.backspace();
1626                         int n = c - '0';
1627                         if (n >= 1 && n <= 9)
1628                                 cur.insert(new InsetMathMacroArgument(n));
1629                         return true;
1630                 }
1631
1632                 // do not finish macro for known * commands
1633                 bool star_macro = c == '*'
1634                         && (in_word_set(name.substr(1) + '*')
1635                             || cur.buffer()->getMacro(name.substr(1) + "*", cur, true));
1636                 if (isAlphaASCII(c) || star_macro) {
1637                         cur.activeMacro()->setName(name + docstring(1, c));
1638                         return true;
1639                 }
1640
1641                 // handle 'special char' macros
1642                 if (name == "\\") {
1643                         // remove the '\\'
1644                         if (c == '\\') {
1645                                 cur.backspace();
1646                                 if (currentMode() != InsetMath::MATH_MODE)
1647                                         cur.niceInsert(createInsetMath("textbackslash", buf));
1648                                 else
1649                                         cur.niceInsert(createInsetMath("backslash", buf));
1650                         } else if (c == '^' && currentMode() == InsetMath::MATH_MODE) {
1651                                 cur.backspace();
1652                                 cur.niceInsert(createInsetMath("mathcircumflex", buf));
1653                         } else if (c == '{' || c == '%') {
1654                                 //using the saved selection as argument
1655                                 InsetMathUnknown * p = cur.activeMacro();
1656                                 p->finalize();
1657                                 MathData sel(cur.buffer());
1658                                 asArray(p->selection(), sel);
1659                                 cur.backspace();
1660                                 if (c == '{')
1661                                         cur.niceInsert(MathAtom(new InsetMathBrace(sel)));
1662                                 else
1663                                         cur.niceInsert(MathAtom(new InsetMathComment(sel)));
1664                         } else if (c == '#') {
1665                                 LASSERT(cur.activeMacro(), return false);
1666                                 cur.activeMacro()->setName(name + docstring(1, c));
1667                         } else {
1668                                 cur.backspace();
1669                                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1670                         }
1671                         return true;
1672                 }
1673
1674                 // One character big delimiters. The others are handled in
1675                 // interpretString().
1676                 latexkeys const * l = in_word_set(name.substr(1));
1677                 if (name[0] == '\\' && l && l->inset == "big") {
1678                         docstring delim;
1679                         switch (c) {
1680                         case '{':
1681                                 delim = from_ascii("\\{");
1682                                 break;
1683                         case '}':
1684                                 delim = from_ascii("\\}");
1685                                 break;
1686                         default:
1687                                 delim = docstring(1, c);
1688                                 break;
1689                         }
1690                         if (InsetMathBig::isBigInsetDelim(delim)) {
1691                                 // name + delim ared a valid InsetMathBig.
1692                                 // We can't use cur.macroModeClose() because
1693                                 // it does not handle delim.
1694                                 InsetMathUnknown * p = cur.activeMacro();
1695                                 p->finalize();
1696                                 --cur.pos();
1697                                 cur.cell().erase(cur.pos());
1698                                 cur.plainInsert(MathAtom(
1699                                         new InsetMathBig(name.substr(1), delim)));
1700                                 return true;
1701                         }
1702                 } else if (name == "\\smash" && c == '[') {
1703                         // We can't use cur.macroModeClose() because
1704                         // it would create an InsetMathPhantom
1705                         InsetMathUnknown * p = cur.activeMacro();
1706                         p->finalize();
1707                         interpretChar(cur, c);
1708                         return true;
1709                 }
1710
1711                 // leave macro mode and try again if necessary
1712                 if (cur.macroModeClose()) {
1713                         MathAtom const atom = cur.prevAtom();
1714                         if (atom->asNestInset() && atom->isActive()) {
1715                                 cur.posBackward();
1716                                 cur.nextInset()->edit(cur, true);
1717                         }
1718                 }
1719                 if (c == '{')
1720                         cur.niceInsert(MathAtom(new InsetMathBrace(buf)));
1721                 else if (c != ' ')
1722                         interpretChar(cur, c);
1723                 return true;
1724         }
1725
1726
1727         // leave autocorrect mode if necessary
1728         if (lyxrc.autocorrection_math && c == ' ' && cur.autocorrect()) {
1729                 cur.autocorrect() = false;
1730                 cur.message(_("Autocorrect Off ('!' to enter)"));
1731                 return true;
1732         }
1733         if (lyxrc.autocorrection_math && c == '!' && !cur.autocorrect()) {
1734                 cur.autocorrect() = true;
1735                 cur.message(_("Autocorrect On (<space> to exit)"));
1736                 return true;
1737         }
1738
1739         // just clear selection on pressing the space bar
1740         if (cur.selection() && c == ' ') {
1741                 cur.selection(false);
1742                 return true;
1743         }
1744
1745         if (c == '\\') {
1746                 //lyxerr << "starting with macro" << endl;
1747                 bool reduced = cap::reduceSelectionToOneCell(cur);
1748                 if (reduced || !cur.selection()) {
1749                         cur.recordUndoInset();
1750                         docstring const safe = cap::grabAndEraseSelection(cur);
1751                         if (!cur.inRegexped())
1752                                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1753                         else
1754                                 cur.niceInsert(createInsetMath("backslash", buf));
1755                 }
1756                 return true;
1757         }
1758
1759         selClearOrDel(cur);
1760
1761         if (c == '\n') {
1762                 if (currentMode() != InsetMath::MATH_MODE)
1763                         cur.insert(c);
1764                 return true;
1765         }
1766
1767         if (c == ' ') {
1768                 if (currentMode() != InsetMath::MATH_MODE) {
1769                         // insert spaces in text or undecided mode,
1770                         // but suppress direct insertion of two spaces in a row
1771                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1772                         // it is better than nothing...
1773                         if (cur.pos() == 0 || cur.prevAtom()->getChar() != ' ') {
1774                                 cur.insert(c);
1775                                 // FIXME: we have to enable full redraw here because of the
1776                                 // visual box corners that define the inset. If we know for
1777                                 // sure that we stay within the same cell we can optimize for
1778                                 // that using:
1779                                 //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1780                         }
1781                         return true;
1782                 }
1783                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1784                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1785                         // FIXME: we have to enable full redraw here because of the
1786                         // visual box corners that define the inset. If we know for
1787                         // sure that we stay within the same cell we can optimize for
1788                         // that using:
1789                         //cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
1790                         return true;
1791                 }
1792
1793                 if (cur.popForward()) {
1794                         // FIXME: we have to enable full redraw here because of the
1795                         // visual box corners that define the inset. If we know for
1796                         // sure that we stay within the same cell we can optimize for
1797                         // that using:
1798                         //cur.screenUpdateFlags(Update::FitCursor);
1799                         return true;
1800                 }
1801
1802                 // if we are at the very end, leave the formula
1803                 return cur.pos() != cur.lastpos();
1804         }
1805
1806         // These should be treated differently when not in text mode:
1807         if (cur.inRegexped()) {
1808                 switch (c) {
1809                 case '^':
1810                         cur.niceInsert(createInsetMath("mathcircumflex", buf));
1811                         break;
1812                 case '{':
1813                 case '}':
1814                 case '#':
1815                 case '%':
1816                 case '_':
1817                         cur.niceInsert(createInsetMath(docstring(1, c), buf));
1818                         break;
1819                 case '~':
1820                         cur.niceInsert(createInsetMath("sim", buf));
1821                         break;
1822                 default:
1823                         cur.insert(c);
1824                 }
1825                 return true;
1826         } else if (currentMode() != InsetMath::TEXT_MODE) {
1827                 if (c == '_') {
1828                         script(cur, false, save_selection);
1829                         return true;
1830                 }
1831                 if (c == '^') {
1832                         script(cur, true, save_selection);
1833                         return true;
1834                 }
1835                 if (c == '~') {
1836                         cur.niceInsert(createInsetMath("sim", buf));
1837                         return true;
1838                 }
1839                 if (currentMode() == InsetMath::MATH_MODE && Encodings::isUnicodeTextOnly(c)) {
1840                         MathAtom at = createInsetMath("text", buf);
1841                         at.nucleus()->cell(0).push_back(MathAtom(new InsetMathChar(c)));
1842                         cur.niceInsert(at);
1843                         cur.posForward();
1844                         return true;
1845                 }
1846         } else {
1847                 if (c == '^') {
1848                         cur.niceInsert(createInsetMath("textasciicircum", buf));
1849                         return true;
1850                 }
1851                 if (c == '~') {
1852                         cur.niceInsert(createInsetMath("textasciitilde", buf));
1853                         return true;
1854                 }
1855         }
1856
1857         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1858             c == '%' || c == '_') {
1859                 cur.niceInsert(createInsetMath(docstring(1, c), buf));
1860                 return true;
1861         }
1862
1863
1864         // try auto-correction
1865         if (lyxrc.autocorrection_math && cur.autocorrect() && cur.pos() != 0
1866                   && math_autocorrect(cur.prevAtom(), c))
1867                 return true;
1868
1869         // no special circumstances, so insert the character without any fuss
1870         cur.insert(c);
1871         if (lyxrc.autocorrection_math) {
1872                 if (!cur.autocorrect())
1873                         cur.message(_("Autocorrect Off ('!' to enter)"));
1874                 else
1875                         cur.message(_("Autocorrect On (<space> to exit)"));
1876         }
1877         return true;
1878 }
1879
1880
1881 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1882 {
1883         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1884         // possible
1885         if (!cur.empty() && cur.pos() > 0 &&
1886             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1887                 if (InsetMathBig::isBigInsetDelim(str)) {
1888                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1889                         if (prev[0] == '\\') {
1890                                 prev = prev.substr(1);
1891                                 latexkeys const * l = in_word_set(prev);
1892                                 if (l && l->inset == "big") {
1893                                         cur.recordUndoSelection();
1894                                         cur.cell()[cur.pos() - 1] =
1895                                                 MathAtom(new InsetMathBig(prev, str));
1896                                         return true;
1897                                 }
1898                         }
1899                 }
1900         }
1901         return false;
1902 }
1903
1904
1905 bool InsetMathNest::script(Cursor & cur, bool up)
1906 {
1907         return script(cur, up, docstring());
1908 }
1909
1910
1911 bool InsetMathNest::script(Cursor & cur, bool up,
1912                 docstring const & save_selection)
1913 {
1914         // Hack to get \^ and \_ working
1915         //lyxerr << "handling script: up: " << up << endl;
1916         if (cur.inMacroMode() && cur.macroName() == "\\") {
1917                 if (up)
1918                         cur.niceInsert(createInsetMath("mathcircumflex", cur.buffer()));
1919                 else
1920                         interpretChar(cur, '_');
1921                 return true;
1922         }
1923
1924         cur.macroModeClose();
1925         if (asScriptInset() && cur.idx() == 0) {
1926                 // we are in a nucleus of a script inset, move to _our_ script
1927                 InsetMathScript * inset = asScriptInset();
1928                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1929                 inset->ensure(up);
1930                 cur.idx() = inset->idxOfScript(up);
1931                 cur.pos() = 0;
1932         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1933                 --cur.pos();
1934                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1935                 cur.push(*inset);
1936                 inset->ensure(up);
1937                 cur.idx() = inset->idxOfScript(up);
1938                 cur.pos() = cur.lastpos();
1939         } else {
1940                 // convert the thing to our left to a scriptinset or create a new
1941                 // one if in the very first position of the array
1942                 if (cur.pos() == 0) {
1943                         //lyxerr << "new scriptinset" << endl;
1944                         cur.insert(new InsetMathScript(buffer_, up));
1945                 } else {
1946                         //lyxerr << "converting prev atom " << endl;
1947                         cur.prevAtom() = MathAtom(new InsetMathScript(buffer_, cur.prevAtom(), up));
1948                 }
1949                 --cur.pos();
1950                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1951                 // See comment in MathParser.cpp for special handling of {}-bases
1952
1953                 cur.push(*inset);
1954                 cur.idx() = 1;
1955                 cur.pos() = 0;
1956         }
1957         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1958         cur.niceInsert(save_selection);
1959         cur.resetAnchor();
1960         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1961         return true;
1962 }
1963
1964
1965 bool InsetMathNest::completionSupported(Cursor const & cur) const
1966 {
1967         return cur.inMacroMode();
1968 }
1969
1970
1971 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
1972 {
1973         return cur.inMacroMode();
1974 }
1975
1976
1977 bool InsetMathNest::automaticInlineCompletion() const
1978 {
1979         return lyxrc.completion_inline_math;
1980 }
1981
1982
1983 bool InsetMathNest::automaticPopupCompletion() const
1984 {
1985         return lyxrc.completion_popup_math;
1986 }
1987
1988
1989 CompletionList const *
1990 InsetMathNest::createCompletionList(Cursor const & cur) const
1991 {
1992         if (!cur.inMacroMode())
1993                 return 0;
1994
1995         return new MathCompletionList(cur);
1996 }
1997
1998
1999 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
2000 {
2001         if (!cur.inMacroMode())
2002                 return docstring();
2003
2004         return cur.activeMacro()->name();
2005 }
2006
2007
2008 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
2009                                      bool finished)
2010 {
2011         if (!cur.inMacroMode())
2012                 return false;
2013
2014         // append completion to active macro
2015         InsetMathUnknown * inset = cur.activeMacro();
2016         inset->setName(inset->name() + s);
2017
2018         // finish macro
2019         if (finished) {
2020 #if 0
2021                 // FIXME: this creates duplicates in the completion popup
2022                 // which looks ugly. Moreover the changes the list lengths
2023                 // which seems to confuse the popup as well.
2024                 MathCompletionList::addToFavorites(inset->name());
2025 #endif
2026                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
2027         }
2028
2029         return true;
2030 }
2031
2032
2033 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
2034                                         Dimension & dim) const
2035 {
2036         Inset const * inset = cur.activeMacro();
2037         if (!inset)
2038                 return;
2039
2040         // get inset dimensions
2041         dim = cur.bv().coordCache().insets().dim(inset);
2042         // FIXME: these 3 are no accurate, but should depend on the font.
2043         // Now the popup jumps down if you enter a char with descent > 0.
2044         dim.des += 3;
2045         dim.asc += 3;
2046
2047         // and position
2048         Point xy = cur.bv().coordCache().insets().xy(inset);
2049         x = xy.x_;
2050         y = xy.y_;
2051 }
2052
2053
2054 ////////////////////////////////////////////////////////////////////
2055
2056 MathCompletionList::MathCompletionList(Cursor const & cur)
2057 {
2058         // fill it with macros from the buffer
2059         MacroNameSet macros;
2060         cur.buffer()->listMacroNames(macros);
2061         MacroNameSet::const_iterator it;
2062         for (it = macros.begin(); it != macros.end(); ++it) {
2063                 if (cur.buffer()->getMacro(*it, cur, false))
2064                         locals.push_back("\\" + *it);
2065         }
2066         sort(locals.begin(), locals.end());
2067
2068         if (!globals.empty())
2069                 return;
2070
2071         // fill in global macros
2072         macros.clear();
2073         MacroTable::globalMacros().getMacroNames(macros, false);
2074         //lyxerr << "Globals completion macros: ";
2075         for (it = macros.begin(); it != macros.end(); ++it) {
2076                 //lyxerr << "\\" + *it << " ";
2077                 globals.push_back("\\" + *it);
2078         }
2079         //lyxerr << std::endl;
2080
2081         // fill in global commands
2082         globals.push_back(from_ascii("\\boxed"));
2083         globals.push_back(from_ascii("\\fbox"));
2084         globals.push_back(from_ascii("\\framebox"));
2085         globals.push_back(from_ascii("\\makebox"));
2086         globals.push_back(from_ascii("\\kern"));
2087         globals.push_back(from_ascii("\\xhookrightarrow"));
2088         globals.push_back(from_ascii("\\xhookleftarrow"));
2089         globals.push_back(from_ascii("\\xrightarrow"));
2090         globals.push_back(from_ascii("\\xRightarrow"));
2091         globals.push_back(from_ascii("\\xrightharpoondown"));
2092         globals.push_back(from_ascii("\\xrightharpoonup"));
2093         globals.push_back(from_ascii("\\xrightleftharpoons"));
2094         globals.push_back(from_ascii("\\xleftarrow"));
2095         globals.push_back(from_ascii("\\xLeftarrow"));
2096         globals.push_back(from_ascii("\\xleftharpoondown"));
2097         globals.push_back(from_ascii("\\xleftharpoonup"));
2098         globals.push_back(from_ascii("\\xleftrightarrow"));
2099         globals.push_back(from_ascii("\\xLeftrightarrow"));
2100         globals.push_back(from_ascii("\\xleftrightharpoons"));
2101         globals.push_back(from_ascii("\\xmapsto"));
2102         globals.push_back(from_ascii("\\split"));
2103         globals.push_back(from_ascii("\\gathered"));
2104         globals.push_back(from_ascii("\\aligned"));
2105         globals.push_back(from_ascii("\\alignedat"));
2106         globals.push_back(from_ascii("\\cases"));
2107         globals.push_back(from_ascii("\\substack"));
2108         globals.push_back(from_ascii("\\xymatrix"));
2109         globals.push_back(from_ascii("\\Diagram"));
2110         globals.push_back(from_ascii("\\subarray"));
2111         globals.push_back(from_ascii("\\array"));
2112         globals.push_back(from_ascii("\\sqrt"));
2113         globals.push_back(from_ascii("\\root"));
2114         globals.push_back(from_ascii("\\tabular"));
2115         globals.push_back(from_ascii("\\sideset"));
2116         globals.push_back(from_ascii("\\stackrel"));
2117         globals.push_back(from_ascii("\\stackrelthree"));
2118         globals.push_back(from_ascii("\\binom"));
2119         globals.push_back(from_ascii("\\choose"));
2120         globals.push_back(from_ascii("\\brace"));
2121         globals.push_back(from_ascii("\\brack"));
2122         globals.push_back(from_ascii("\\frac"));
2123         globals.push_back(from_ascii("\\over"));
2124         globals.push_back(from_ascii("\\nicefrac"));
2125         globals.push_back(from_ascii("\\unitfrac"));
2126         globals.push_back(from_ascii("\\unitfracthree"));
2127         globals.push_back(from_ascii("\\unitone"));
2128         globals.push_back(from_ascii("\\unittwo"));
2129         globals.push_back(from_ascii("\\infer"));
2130         globals.push_back(from_ascii("\\atop"));
2131         globals.push_back(from_ascii("\\lefteqn"));
2132         globals.push_back(from_ascii("\\boldsymbol"));
2133         globals.push_back(from_ascii("\\bm"));
2134         globals.push_back(from_ascii("\\color"));
2135         globals.push_back(from_ascii("\\normalcolor"));
2136         globals.push_back(from_ascii("\\textcolor"));
2137         globals.push_back(from_ascii("\\cfrac"));
2138         globals.push_back(from_ascii("\\cfracleft"));
2139         globals.push_back(from_ascii("\\cfracright"));
2140         globals.push_back(from_ascii("\\dfrac"));
2141         globals.push_back(from_ascii("\\tfrac"));
2142         globals.push_back(from_ascii("\\dbinom"));
2143         globals.push_back(from_ascii("\\tbinom"));
2144         globals.push_back(from_ascii("\\hphantom"));
2145         globals.push_back(from_ascii("\\phantom"));
2146         globals.push_back(from_ascii("\\vphantom"));
2147         globals.push_back(from_ascii("\\cancel"));
2148         globals.push_back(from_ascii("\\bcancel"));
2149         globals.push_back(from_ascii("\\xcancel"));
2150         globals.push_back(from_ascii("\\cancelto"));
2151         globals.push_back(from_ascii("\\smash"));
2152         globals.push_back(from_ascii("\\mathclap"));
2153         globals.push_back(from_ascii("\\mathllap"));
2154         globals.push_back(from_ascii("\\mathrlap"));
2155         globals.push_back(from_ascii("\\ensuremath"));
2156         MathWordList const & words = mathedWordList();
2157         MathWordList::const_iterator it2;
2158         //lyxerr << "Globals completion commands: ";
2159         for (it2 = words.begin(); it2 != words.end(); ++it2) {
2160                 if (it2->second.inset != "macro" && !it2->second.hidden) {
2161                         // macros are already read from MacroTable::globalMacros()
2162                         globals.push_back('\\' + it2->first);
2163                         //lyxerr << '\\' + it2->first << ' ';
2164                 }
2165         }
2166         //lyxerr << std::endl;
2167         sort(globals.begin(), globals.end());
2168 }
2169
2170
2171 MathCompletionList::~MathCompletionList()
2172 {
2173 }
2174
2175
2176 size_type MathCompletionList::size() const
2177 {
2178         return locals.size() + globals.size();
2179 }
2180
2181
2182 docstring const & MathCompletionList::data(size_t idx) const
2183 {
2184         size_t lsize = locals.size();
2185         if (idx >= lsize)
2186                 return globals[idx - lsize];
2187         else
2188                 return locals[idx];
2189 }
2190
2191
2192 std::string MathCompletionList::icon(size_t idx) const
2193 {
2194         // get the latex command
2195         docstring cmd;
2196         size_t lsize = locals.size();
2197         if (idx >= lsize)
2198                 cmd = globals[idx - lsize];
2199         else
2200                 cmd = locals[idx];
2201
2202         // get the icon resource name by stripping the backslash
2203         docstring icon_name = frontend::Application::mathIcon(cmd.substr(1));
2204         if (icon_name.empty())
2205                 return std::string();
2206         return "images/math/" + to_utf8(icon_name);
2207 }
2208
2209 std::vector<docstring> MathCompletionList::globals;
2210
2211 } // namespace lyx