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 "InsetMathBig.h"
  17 #include "InsetMathBox.h"
  18 #include "InsetMathBrace.h"
  19 #include "InsetMathColor.h"
  20 #include "InsetMathComment.h"
  21 #include "InsetMathDelim.h"
  22 #include "InsetMathHull.h"
  23 #include "InsetMathRef.h"
  24 #include "InsetMathScript.h"
  25 #include "InsetMathSpace.h"
  26 #include "InsetMathSymbol.h"
  27 #include "InsetMathUnknown.h"
  28 #include "MathData.h"
  29 #include "MathFactory.h"
  30 #include "MathMacro.h"
  31 #include "MathMacroArgument.h"
  32 #include "MathParser.h"
  33 #include "MathStream.h"
  34 #include "MathSupport.h"
  35
  36 #include "Bidi.h"
  37 #include "Buffer.h"
  38 #include "BufferView.h"
  39 #include "CoordCache.h"
  40 #include "Cursor.h"
  41 #include "CutAndPaste.h"
  42 #include "DispatchResult.h"
  43 #include "FuncRequest.h"
  44 #include "FuncStatus.h"
  45 #include "LyXFunc.h"
  46 #include "LyXRC.h"
  47 #include "OutputParams.h"
  48 #include "Text.h"
  49
  50 #include "frontends/Clipboard.h"
  51 #include "frontends/Painter.h"
  52 #include "frontends/Selection.h"
  53
  54 #include "support/debug.h"
  55 #include "support/gettext.h"
  56 #include "support/lstrings.h"
  57 #include "support/textutils.h"
  58 #include "support/docstream.h"
  59
  60 #include <algorithm>
  61 #include <sstream>
  62
  63 using namespace std;
  64 using namespace lyx::support;
  65
  66 namespace lyx {
  67
  68 using cap::copySelection;
  69 using cap::grabAndEraseSelection;
  70 using cap::cutSelection;
  71 using cap::replaceSelection;
  72 using cap::selClearOrDel;
  73
  74
  75 InsetMathNest::InsetMathNest(idx_type nargs)
  76         : cells_(nargs), lock_(false), mouse_hover_(false)
  77 {}
  78
  79
  80 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  81         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_),
  82           mouse_hover_(false)
  83 {}
  84
  85
  86 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
  87 {
  88         cells_ = inset.cells_;
  89         lock_ = inset.lock_;
  90         mouse_hover_ = false;
  91         InsetMath::operator=(inset);
  92         return *this;
  93 }
  94
  95
  96 InsetMath::idx_type InsetMathNest::nargs() const
  97 {
  98         return cells_.size();
  99 }
 100
 101
 102 void InsetMathNest::cursorPos(BufferView const & bv,
 103                 CursorSlice const & sl, bool /*boundary*/,
 104                 int & x, int & y) const
 105 {
 106 // FIXME: This is a hack. Ideally, the coord cache should not store
 107 // absolute positions, but relative ones. This would mean to call
 108 // setXY() not in MathData::draw(), but in the parent insets' draw()
 109 // with the correctly adjusted x,y values. But this means that we'd have
 110 // to touch all (math)inset's draw() methods. Right now, we'll store
 111 // absolute value, and make them here relative, only to make them
 112 // absolute again when actually drawing the cursor. What a mess.
 113         BOOST_ASSERT(&sl.inset() == this);
 114         MathData const & ar = sl.cell();
 115         CoordCache const & coord_cache = bv.coordCache();
 116         if (!coord_cache.getArrays().has(&ar)) {
 117                 // this can (semi-)legally happen if we just created this cell
 118                 // and it never has been drawn before. So don't ASSERT.
 119                 //lyxerr << "no cached data for array " << &ar << endl;
 120                 x = 0;
 121                 y = 0;
 122                 return;
 123         }
 124         Point const pt = coord_cache.getArrays().xy(&ar);
 125         if (!coord_cache.getInsets().has(this)) {
 126                 // same as above
 127                 //lyxerr << "no cached data for inset " << this << endl;
 128                 x = 0;
 129                 y = 0;
 130                 return;
 131         }
 132         Point const pt2 = coord_cache.getInsets().xy(this);
 133         //lyxerr << "retrieving position cache for MathData "
 134         //      << pt.x_ << ' ' << pt.y_ << endl;
 135         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 136         y = pt.y_ - pt2.y_;
 137 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 138 //              << " asc: " << ascent() << "  des: " << descent()
 139 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 140         // move cursor visually into empty cells ("blue rectangles");
 141         if (ar.empty())
 142                 x += 2;
 143 }
 144
 145
 146 void InsetMathNest::metrics(MetricsInfo const & mi) const
 147 {
 148         MetricsInfo m = mi;
 149         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 150                 Dimension dim;
 151                 cell(i).metrics(m, dim);
 152         }
 153 }
 154
 155
 156 bool InsetMathNest::idxNext(Cursor & cur) const
 157 {
 158         BOOST_ASSERT(&cur.inset() == this);
 159         if (cur.idx() == cur.lastidx())
 160                 return false;
 161         ++cur.idx();
 162         cur.pos() = 0;
 163         return true;
 164 }
 165
 166
 167 bool InsetMathNest::idxForward(Cursor & cur) const
 168 {
 169         return idxNext(cur);
 170 }
 171
 172
 173 bool InsetMathNest::idxPrev(Cursor & cur) const
 174 {
 175         BOOST_ASSERT(&cur.inset() == this);
 176         if (cur.idx() == 0)
 177                 return false;
 178         --cur.idx();
 179         cur.pos() = cur.lastpos();
 180         return true;
 181 }
 182
 183
 184 bool InsetMathNest::idxBackward(Cursor & cur) const
 185 {
 186         return idxPrev(cur);
 187 }
 188
 189
 190 bool InsetMathNest::idxFirst(Cursor & cur) const
 191 {
 192         BOOST_ASSERT(&cur.inset() == this);
 193         if (nargs() == 0)
 194                 return false;
 195         cur.idx() = 0;
 196         cur.pos() = 0;
 197         return true;
 198 }
 199
 200
 201 bool InsetMathNest::idxLast(Cursor & cur) const
 202 {
 203         BOOST_ASSERT(&cur.inset() == this);
 204         if (nargs() == 0)
 205                 return false;
 206         cur.idx() = cur.lastidx();
 207         cur.pos() = cur.lastpos();
 208         return true;
 209 }
 210
 211
 212 void InsetMathNest::dump() const
 213 {
 214         odocstringstream oss;
 215         WriteStream os(oss);
 216         os << "---------------------------------------------\n";
 217         write(os);
 218         os << "\n";
 219         for (idx_type i = 0, n = nargs(); i != n; ++i)
 220                 os << cell(i) << "\n";
 221         os << "---------------------------------------------\n";
 222         lyxerr << to_utf8(oss.str());
 223 }
 224
 225
 226 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 227 {
 228 #if 0
 229         if (lock_)
 230                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 231                                         Color_mathlockbg);
 232 #endif
 233         setPosCache(pi, x, y);
 234 }
 235
 236
 237 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 238 {
 239         BufferView & bv = *pi.base.bv;
 240         // this should use the x/y values given, not the cached values
 241         Cursor & cur = bv.cursor();
 242         if (!cur.selection())
 243                 return;
 244         if (&cur.inset() != this)
 245                 return;
 246
 247         // FIXME: hack to get position cache warm
 248         bool const original_drawing_state = pi.pain.isDrawingEnabled();
 249         pi.pain.setDrawingEnabled(false);
 250         draw(pi, x, y);
 251         pi.pain.setDrawingEnabled(original_drawing_state);
 252
 253         CursorSlice s1 = cur.selBegin();
 254         CursorSlice s2 = cur.selEnd();
 255
 256         //lyxerr << "InsetMathNest::drawing selection: "
 257         //      << " s1: " << s1 << " s2: " << s2 << endl;
 258         if (s1.idx() == s2.idx()) {
 259                 MathData const & c = cell(s1.idx());
 260                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 261                 int x1 = g.pos.x_ + c.pos2x(pi.base.bv, s1.pos());
 262                 int y1 = g.pos.y_ - g.dim.ascent();
 263                 int x2 = g.pos.x_ + c.pos2x(pi.base.bv, s2.pos());
 264                 int y2 = g.pos.y_ + g.dim.descent();
 265                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 266         //lyxerr << "InsetMathNest::drawing selection 3: "
 267         //      << " x1: " << x1 << " x2: " << x2
 268         //      << " y1: " << y1 << " y2: " << y2 << endl;
 269         } else {
 270                 for (idx_type i = 0; i < nargs(); ++i) {
 271                         if (idxBetween(i, s1.idx(), s2.idx())) {
 272                                 MathData const & c = cell(i);
 273                                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 274                                 int x1 = g.pos.x_;
 275                                 int y1 = g.pos.y_ - g.dim.ascent();
 276                                 int x2 = g.pos.x_ + g.dim.width();
 277                                 int y2 = g.pos.y_ + g.dim.descent();
 278                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 279                         }
 280                 }
 281         }
 282 }
 283
 284
 285 void InsetMathNest::validate(LaTeXFeatures & features) const
 286 {
 287         for (idx_type i = 0; i < nargs(); ++i)
 288                 cell(i).validate(features);
 289 }
 290
 291
 292 void InsetMathNest::replace(ReplaceData & rep)
 293 {
 294         for (idx_type i = 0; i < nargs(); ++i)
 295                 cell(i).replace(rep);
 296 }
 297
 298
 299 bool InsetMathNest::contains(MathData const & ar) const
 300 {
 301         for (idx_type i = 0; i < nargs(); ++i)
 302                 if (cell(i).contains(ar))
 303                         return true;
 304         return false;
 305 }
 306
 307
 308 bool InsetMathNest::lock() const
 309 {
 310         return lock_;
 311 }
 312
 313
 314 void InsetMathNest::lock(bool l)
 315 {
 316         lock_ = l;
 317 }
 318
 319
 320 bool InsetMathNest::isActive() const
 321 {
 322         return nargs() > 0;
 323 }
 324
 325
 326 MathData InsetMathNest::glue() const
 327 {
 328         MathData ar;
 329         for (size_t i = 0; i < nargs(); ++i)
 330                 ar.append(cell(i));
 331         return ar;
 332 }
 333
 334
 335 void InsetMathNest::write(WriteStream & os) const
 336 {
 337         os << '\\' << name().c_str();
 338         for (size_t i = 0; i < nargs(); ++i)
 339                 os << '{' << cell(i) << '}';
 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().c_str();
 352         for (size_t i = 0; i < nargs(); ++i)
 353                 os << ' ' << cell(i);
 354         os << ']';
 355 }
 356
 357
 358 int InsetMathNest::latex(odocstream & os, OutputParams const & runparams) const
 359 {
 360         WriteStream wi(os, runparams.moving_arg, true);
 361         write(wi);
 362         return wi.line();
 363 }
 364
 365
 366 bool InsetMathNest::setMouseHover(bool mouse_hover)
 367 {
 368         mouse_hover_ = mouse_hover;
 369         return true;
 370 }
 371
 372
 373 bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
 374 {
 375         // FIXME: look here
 376 #if 0
 377         MathData & ar = cur.cell();
 378         // remove base-only "scripts"
 379         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 380                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 381                 if (p && p->nargs() == 1) {
 382                         MathData ar = p->nuc();
 383                         erase(i);
 384                         insert(i, ar);
 385                         cur.adjust(i, ar.size() - 1);
 386                 }
 387         }
 388
 389         // glue adjacent font insets of the same kind
 390         for (pos_type i = 0; i + 1 < size(); ++i) {
 391                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 392                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 393                 if (p && q && p->name() == q->name()) {
 394                         p->cell(0).append(q->cell(0));
 395                         erase(i + 1);
 396                         cur.adjust(i, -1);
 397                 }
 398         }
 399 #endif
 400         return false;
 401 }
 402
 403
 404 void InsetMathNest::handleFont
 405         (Cursor & cur, docstring const & arg, char const * const font)
 406 {
 407         handleFont(cur, arg, from_ascii(font));
 408 }
 409
 410
 411 void InsetMathNest::handleFont
 412         (Cursor & cur, docstring const & arg, docstring const & font)
 413 {
 414         // this whole function is a hack and won't work for incremental font
 415         // changes...
 416
 417         if (cur.inset().asInsetMath()->name() == font) {
 418                 cur.recordUndoInset();
 419                 cur.handleFont(to_utf8(font));
 420         } else {
 421                 cur.recordUndo();
 422                 cur.handleNest(createInsetMath(font));
 423                 cur.insert(arg);
 424         }
 425 }
 426
 427
 428 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 429 {
 430         cur.recordUndo();
 431         Font font;
 432         bool b;
 433         font.fromString(to_utf8(arg), b);
 434         if (font.fontInfo().color() != Color_inherit) {
 435                 MathAtom at = MathAtom(new InsetMathColor(true, font.fontInfo().color()));
 436                 cur.handleNest(at, 0);
 437         }
 438 }
 439
 440
 441 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 442 {
 443         //lyxerr << "InsetMathNest: request: " << cmd << endl;
 444         //CursorSlice sl = cur.current();
 445
 446         switch (cmd.action) {
 447
 448         case LFUN_PASTE: {
 449                 cur.recordUndo();
 450                 cur.message(_("Paste"));
 451                 replaceSelection(cur);
 452                 docstring topaste;
 453                 if (cmd.argument().empty() && !theClipboard().isInternal())
 454                         topaste = theClipboard().getAsText();
 455                 else {
 456                         size_t n = 0;
 457                         idocstringstream is(cmd.argument());
 458                         is >> n;
 459                         topaste = cap::selection(n);
 460                 }
 461                 cur.niceInsert(topaste);
 462                 cur.clearSelection(); // bug 393
 463                 cur.finishUndo();
 464                 break;
 465         }
 466
 467         case LFUN_CUT:
 468                 cur.recordUndo();
 469                 cutSelection(cur, true, true);
 470                 cur.message(_("Cut"));
 471                 // Prevent stale position >= size crash
 472                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 473                 cur.normalize();
 474                 break;
 475
 476         case LFUN_COPY:
 477                 copySelection(cur);
 478                 cur.message(_("Copy"));
 479                 break;
 480
 481         case LFUN_MOUSE_PRESS:
 482                 lfunMousePress(cur, cmd);
 483                 break;
 484
 485         case LFUN_MOUSE_MOTION:
 486                 lfunMouseMotion(cur, cmd);
 487                 break;
 488
 489         case LFUN_MOUSE_RELEASE:
 490                 lfunMouseRelease(cur, cmd);
 491                 break;
 492
 493         case LFUN_FINISHED_LEFT: // in math, left is backwards
 494         case LFUN_FINISHED_BACKWARD:
 495                 cur.bv().cursor() = cur;
 496                 break;
 497
 498         case LFUN_FINISHED_RIGHT: // in math, right is forward
 499         case LFUN_FINISHED_FORWARD:
 500                 ++cur.pos();
 501                 cur.bv().cursor() = cur;
 502                 break;
 503
 504         case LFUN_CHAR_RIGHT:
 505         case LFUN_CHAR_LEFT:
 506         case LFUN_CHAR_BACKWARD:
 507         case LFUN_CHAR_FORWARD:
 508                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 509         case LFUN_CHAR_RIGHT_SELECT:
 510         case LFUN_CHAR_LEFT_SELECT:
 511         case LFUN_CHAR_BACKWARD_SELECT:
 512         case LFUN_CHAR_FORWARD_SELECT: {
 513                 // are we in a selection?
 514                 bool select = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 515                                            || cmd.action == LFUN_CHAR_LEFT_SELECT
 516                                            || cmd.action == LFUN_CHAR_BACKWARD_SELECT
 517                                            || cmd.action == LFUN_CHAR_FORWARD_SELECT);
 518                 // are we moving forward or backwards?
 519                 // If the command was RIGHT or LEFT, then whether we're moving forward
 520                 // or backwards depends on the cursor movement mode (logical or visual):
 521                 //  * in visual mode, since math is always LTR, right -> forward,
 522                 //    left -> backwards
 523                 //  * in logical mode, the mapping is determined by the
 524                 //    reverseDirectionNeeded() function
 525
 526                 bool forward;
 527                 kb_action finish_lfun;
 528
 529                 if (cmd.action == LFUN_CHAR_FORWARD
 530                                 || cmd.action == LFUN_CHAR_FORWARD_SELECT) {
 531                         forward = true;
 532                         finish_lfun = LFUN_FINISHED_FORWARD;
 533                 }
 534                 else if (cmd.action == LFUN_CHAR_BACKWARD
 535                                 || cmd.action == LFUN_CHAR_BACKWARD_SELECT) {
 536                         forward = false;
 537                         finish_lfun = LFUN_FINISHED_BACKWARD;
 538                 }
 539                 else {
 540                         bool right = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 541                                                   || cmd.action == LFUN_CHAR_RIGHT);
 542                         if (lyxrc.visual_cursor || !reverseDirectionNeeded(cur))
 543                                 forward = right;
 544                         else
 545                                 forward = !right;
 546
 547                         if (right)
 548                                 finish_lfun = LFUN_FINISHED_RIGHT;
 549                         else
 550                                 finish_lfun = LFUN_FINISHED_LEFT;
 551                 }
 552                 // Now that we know exactly what we want to do, let's do it!
 553                 cur.selHandle(select);
 554                 cur.autocorrect() = false;
 555                 cur.clearTargetX();
 556                 cur.macroModeClose();
 557                 // try moving forward or backwards as necessary...
 558                 if (!(forward ? cursorMathForward(cur) : cursorMathBackward(cur))) {
 559                         // ... and if movement failed, then finish forward or backwards
 560                         // as necessary
 561                         cmd = FuncRequest(finish_lfun);
 562                         cur.undispatched();
 563                 }
 564                 break;
 565         }
 566
 567         case LFUN_DOWN:
 568         case LFUN_UP:
 569                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 570         case LFUN_DOWN_SELECT:
 571         case LFUN_UP_SELECT: {
 572                 // close active macro
 573                 if (cur.inMacroMode()) {
 574                         cur.macroModeClose();
 575                         break;
 576                 }
 577
 578                 // stop/start the selection
 579                 bool select = cmd.action == LFUN_DOWN_SELECT ||
 580                         cmd.action == LFUN_UP_SELECT;
 581                 cur.selHandle(select);
 582
 583                 // go up/down
 584                 bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
 585                 bool successful = cur.upDownInMath(up);
 586                 if (successful)
 587                         break;
 588
 589                 if (cur.fixIfBroken())
 590                         // FIXME: Something bad happened. We pass the corrected Cursor
 591                         // instead of letting things go worse.
 592                         break;
 593
 594                 // We did not manage to move the cursor.
 595                 cur.undispatched();
 596                 break;
 597         }
 598
 599         case LFUN_MOUSE_DOUBLE:
 600         case LFUN_MOUSE_TRIPLE:
 601         case LFUN_WORD_SELECT:
 602                 cur.pos() = 0;
 603                 cur.idx() = 0;
 604                 cur.resetAnchor();
 605                 cur.selection() = true;
 606                 cur.pos() = cur.lastpos();
 607                 cur.idx() = cur.lastidx();
 608                 break;
 609
 610         case LFUN_PARAGRAPH_UP:
 611         case LFUN_PARAGRAPH_DOWN:
 612                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 613         case LFUN_PARAGRAPH_UP_SELECT:
 614         case LFUN_PARAGRAPH_DOWN_SELECT:
 615                 break;
 616
 617         case LFUN_LINE_BEGIN:
 618         case LFUN_WORD_BACKWARD:
 619         case LFUN_WORD_LEFT:
 620                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 621         case LFUN_LINE_BEGIN_SELECT:
 622         case LFUN_WORD_BACKWARD_SELECT:
 623         case LFUN_WORD_LEFT_SELECT:
 624                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 625                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
 626                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 627                 cur.macroModeClose();
 628                 if (cur.pos() != 0) {
 629                         cur.pos() = 0;
 630                 } else if (cur.col() != 0) {
 631                         cur.idx() -= cur.col();
 632                         cur.pos() = 0;
 633                 } else if (cur.idx() != 0) {
 634                         cur.idx() = 0;
 635                         cur.pos() = 0;
 636                 } else {
 637                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 638                         cur.undispatched();
 639                 }
 640                 break;
 641
 642         case LFUN_WORD_FORWARD:
 643         case LFUN_WORD_RIGHT:
 644         case LFUN_LINE_END:
 645                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 646         case LFUN_WORD_FORWARD_SELECT:
 647         case LFUN_WORD_RIGHT_SELECT:
 648         case LFUN_LINE_END_SELECT:
 649                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 650                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
 651                                 cmd.action == LFUN_LINE_END_SELECT);
 652                 cur.macroModeClose();
 653                 cur.clearTargetX();
 654                 if (cur.pos() != cur.lastpos()) {
 655                         cur.pos() = cur.lastpos();
 656                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 657                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 658                         cur.pos() = cur.lastpos();
 659                 } else if (cur.idx() != cur.lastidx()) {
 660                         cur.idx() = cur.lastidx();
 661                         cur.pos() = cur.lastpos();
 662                 } else {
 663                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 664                         cur.undispatched();
 665                 }
 666                 break;
 667
 668         case LFUN_CELL_FORWARD:
 669                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 670                 cur.inset().idxNext(cur);
 671                 break;
 672
 673         case LFUN_CELL_BACKWARD:
 674                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 675                 cur.inset().idxPrev(cur);
 676                 break;
 677
 678         case LFUN_WORD_DELETE_BACKWARD:
 679         case LFUN_CHAR_DELETE_BACKWARD:
 680                 if (cur.pos() == 0)
 681                         // May affect external cell:
 682                         cur.recordUndoInset();
 683                 else
 684                         cur.recordUndo();
 685                 // if the inset can not be removed from within, delete it
 686                 if (!cur.backspace()) {
 687                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 688                         cur.innerText()->dispatch(cur, cmd);
 689                 }
 690                 break;
 691
 692         case LFUN_WORD_DELETE_FORWARD:
 693         case LFUN_CHAR_DELETE_FORWARD:
 694                 if (cur.pos() == cur.lastpos())
 695                         // May affect external cell:
 696                         cur.recordUndoInset();
 697                 else
 698                         cur.recordUndo();
 699                 // if the inset can not be removed from within, delete it
 700                 if (!cur.erase()) {
 701                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 702                         cur.innerText()->dispatch(cur, cmd);
 703                 }
 704                 break;
 705
 706         case LFUN_ESCAPE:
 707                 if (cur.selection())
 708                         cur.clearSelection();
 709                 else  {
 710                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 711                         cur.undispatched();
 712                 }
 713                 break;
 714
 715         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 716         // that is traversed by a single <CursorLeft>/<CursorRight>.
 717         case LFUN_INSET_TOGGLE:
 718                 cur.recordUndo();
 719                 lock(!lock());
 720                 cur.popForward();
 721                 break;
 722
 723         case LFUN_SELF_INSERT:
 724                 if (cmd.argument().size() != 1) {
 725                         cur.recordUndo();
 726                         docstring const arg = cmd.argument();
 727                         if (!interpretString(cur, arg))
 728                                 cur.insert(arg);
 729                         break;
 730                 }
 731                 // Don't record undo steps if we are in macro mode and
 732                 // cmd.argument is the next character of the macro name.
 733                 // Otherwise we'll get an invalid cursor if we undo after
 734                 // the macro was finished and the macro is a known command,
 735                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 736                 // the InsetMathUnknown with name "frac" by an empty
 737                 // InsetMathFrac -> a pos value > 0 is invalid.
 738                 // A side effect is that an undo before the macro is finished
 739                 // undoes the complete macro, not only the last character.
 740                 if (!cur.inMacroMode())
 741                         cur.recordUndo();
 742
 743                 // spacial handling of space. If we insert an inset
 744                 // via macro mode, we want to put the cursor inside it
 745                 // if relevant. Think typing "\frac<space>".
 746                 if (cmd.argument()[0] == ' '
 747                     && cur.inMacroMode() && cur.macroName() != "\\"
 748                     && cur.macroModeClose()) {
 749                         MathAtom const atom = cur.prevAtom();
 750                         if (atom->asNestInset() && atom->isActive()) {
 751                                 cur.posBackward();
 752                                 cur.pushBackward(*cur.nextInset());
 753                         }
 754                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 755                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 756                         cur.undispatched();
 757                 }
 758                 break;
 759
 760         //case LFUN_SERVER_GET_XY:
 761         //      sprintf(dispatch_buffer, "%d %d",);
 762         //      break;
 763
 764         case LFUN_SERVER_SET_XY: {
 765                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 766                 int x = 0;
 767                 int y = 0;
 768                 istringstream is(to_utf8(cmd.argument()));
 769                 is >> x >> y;
 770                 cur.setScreenPos(x, y);
 771                 break;
 772         }
 773
 774         // Special casing for superscript in case of LyX handling
 775         // dead-keys:
 776         case LFUN_ACCENT_CIRCUMFLEX:
 777                 if (cmd.argument().empty()) {
 778                         // do superscript if LyX handles
 779                         // deadkeys
 780                         cur.recordUndo();
 781                         script(cur, true, grabAndEraseSelection(cur));
 782                 }
 783                 break;
 784
 785         case LFUN_ACCENT_UMLAUT:
 786         case LFUN_ACCENT_ACUTE:
 787         case LFUN_ACCENT_GRAVE:
 788         case LFUN_ACCENT_BREVE:
 789         case LFUN_ACCENT_DOT:
 790         case LFUN_ACCENT_MACRON:
 791         case LFUN_ACCENT_CARON:
 792         case LFUN_ACCENT_TILDE:
 793         case LFUN_ACCENT_CEDILLA:
 794         case LFUN_ACCENT_CIRCLE:
 795         case LFUN_ACCENT_UNDERDOT:
 796         case LFUN_ACCENT_TIE:
 797         case LFUN_ACCENT_OGONEK:
 798         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 799                 break;
 800
 801         //  Math fonts
 802         case LFUN_FONT_FREE_APPLY:
 803         case LFUN_FONT_FREE_UPDATE:
 804                 handleFont2(cur, cmd.argument());
 805                 break;
 806
 807         case LFUN_FONT_BOLD:
 808                 if (currentMode() == TEXT_MODE)
 809                         handleFont(cur, cmd.argument(), "textbf");
 810                 else
 811                         handleFont(cur, cmd.argument(), "mathbf");
 812                 break;
 813         case LFUN_FONT_SANS:
 814                 if (currentMode() == TEXT_MODE)
 815                         handleFont(cur, cmd.argument(), "textsf");
 816                 else
 817                         handleFont(cur, cmd.argument(), "mathsf");
 818                 break;
 819         case LFUN_FONT_EMPH:
 820                 if (currentMode() == TEXT_MODE)
 821                         handleFont(cur, cmd.argument(), "emph");
 822                 else
 823                         handleFont(cur, cmd.argument(), "mathcal");
 824                 break;
 825         case LFUN_FONT_ROMAN:
 826                 if (currentMode() == TEXT_MODE)
 827                         handleFont(cur, cmd.argument(), "textrm");
 828                 else
 829                         handleFont(cur, cmd.argument(), "mathrm");
 830                 break;
 831         case LFUN_FONT_TYPEWRITER:
 832                 if (currentMode() == TEXT_MODE)
 833                         handleFont(cur, cmd.argument(), "texttt");
 834                 else
 835                         handleFont(cur, cmd.argument(), "mathtt");
 836                 break;
 837         case LFUN_FONT_FRAK:
 838                 handleFont(cur, cmd.argument(), "mathfrak");
 839                 break;
 840         case LFUN_FONT_ITAL:
 841                 if (currentMode() == TEXT_MODE)
 842                         handleFont(cur, cmd.argument(), "textit");
 843                 else
 844                         handleFont(cur, cmd.argument(), "mathit");
 845                 break;
 846         case LFUN_FONT_NOUN:
 847                 if (currentMode() == TEXT_MODE)
 848                         // FIXME: should be "noun"
 849                         handleFont(cur, cmd.argument(), "textsc");
 850                 else
 851                         handleFont(cur, cmd.argument(), "mathbb");
 852                 break;
 853         /*
 854         case LFUN_FONT_FREE_APPLY:
 855                 handleFont(cur, cmd.argument(), "textrm");
 856                 break;
 857         */
 858         case LFUN_FONT_DEFAULT:
 859                 handleFont(cur, cmd.argument(), "textnormal");
 860                 break;
 861
 862         case LFUN_MATH_MODE: {
 863 #if 1
 864                 // ignore math-mode on when already in math mode
 865                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 866                         break;
 867                 cur.macroModeClose();
 868                 docstring const save_selection = grabAndEraseSelection(cur);
 869                 selClearOrDel(cur);
 870                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 871                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 872                 cur.posBackward();
 873                 cur.pushBackward(*cur.nextInset());
 874                 cur.niceInsert(save_selection);
 875 #else
 876                 if (currentMode() == Inset::TEXT_MODE) {
 877                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 878                         cur.message(_("create new math text environment ($...$)"));
 879                 } else {
 880                         handleFont(cur, cmd.argument(), "textrm");
 881                         cur.message(_("entered math text mode (textrm)"));
 882                 }
 883 #endif
 884                 break;
 885         }
 886
 887         case LFUN_MATH_SIZE:
 888 #if 0
 889                 cur.recordUndo();
 890                 cur.setSize(arg);
 891 #endif
 892                 break;
 893
 894         case LFUN_MATH_MATRIX: {
 895                 cur.recordUndo();
 896                 unsigned int m = 1;
 897                 unsigned int n = 1;
 898                 docstring v_align;
 899                 docstring h_align;
 900                 idocstringstream is(cmd.argument());
 901                 is >> m >> n >> v_align >> h_align;
 902                 if (m < 1)
 903                         m = 1;
 904                 if (n < 1)
 905                         n = 1;
 906                 v_align += 'c';
 907                 cur.niceInsert(
 908                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 909                 break;
 910         }
 911
 912         case LFUN_MATH_DELIM: {
 913                 docstring ls;
 914                 docstring rs = split(cmd.argument(), ls, ' ');
 915                 // Reasonable default values
 916                 if (ls.empty())
 917                         ls = '(';
 918                 if (rs.empty())
 919                         rs = ')';
 920                 cur.recordUndo();
 921                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 922                 break;
 923         }
 924
 925         case LFUN_MATH_BIGDELIM: {
 926                 docstring const lname  = from_utf8(cmd.getArg(0));
 927                 docstring const ldelim = from_utf8(cmd.getArg(1));
 928                 docstring const rname  = from_utf8(cmd.getArg(2));
 929                 docstring const rdelim = from_utf8(cmd.getArg(3));
 930                 latexkeys const * l = in_word_set(lname);
 931                 bool const have_l = l && l->inset == "big" &&
 932                                     InsetMathBig::isBigInsetDelim(ldelim);
 933                 l = in_word_set(rname);
 934                 bool const have_r = l && l->inset == "big" &&
 935                                     InsetMathBig::isBigInsetDelim(rdelim);
 936                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 937                 // or right delimiter.
 938                 if (have_l || have_r) {
 939                         cur.recordUndo();
 940                         docstring const selection = grabAndEraseSelection(cur);
 941                         selClearOrDel(cur);
 942                         if (have_l)
 943                                 cur.insert(MathAtom(new InsetMathBig(lname,
 944                                                                 ldelim)));
 945                         cur.niceInsert(selection);
 946                         if (have_r)
 947                                 cur.insert(MathAtom(new InsetMathBig(rname,
 948                                                                 rdelim)));
 949                 }
 950                 // Don't call cur.undispatched() if we did nothing, this would
 951                 // lead to infinite recursion via Text::dispatch().
 952                 break;
 953         }
 954
 955         case LFUN_SPACE_INSERT:
 956         case LFUN_MATH_SPACE:
 957                 cur.recordUndo();
 958                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 959                 break;
 960
 961         case LFUN_ERT_INSERT:
 962                 // interpret this as if a backslash was typed
 963                 cur.recordUndo();
 964                 interpretChar(cur, '\\');
 965                 break;
 966
 967         case LFUN_MATH_SUBSCRIPT:
 968                 // interpret this as if a _ was typed
 969                 cur.recordUndo();
 970                 interpretChar(cur, '_');
 971                 break;
 972
 973         case LFUN_MATH_SUPERSCRIPT:
 974                 // interpret this as if a ^ was typed
 975                 cur.recordUndo();
 976                 interpretChar(cur, '^');
 977                 break;
 978
 979         case LFUN_MATH_MACRO_FOLD:
 980         case LFUN_MATH_MACRO_UNFOLD: {
 981                 Cursor it = cur;
 982                 bool fold = cmd.action == LFUN_MATH_MACRO_FOLD;
 983                 bool found = findMacroToFoldUnfold(it, fold);
 984                 if (found) {
 985                         MathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
 986                         cur.recordUndoInset();
 987                         if (fold)
 988                                 macro->fold(cur);
 989                         else
 990                                 macro->unfold(cur);
 991                 }
 992                 break;
 993         }
 994
 995         case LFUN_QUOTE_INSERT:
 996                 // interpret this as if a straight " was typed
 997                 cur.recordUndo();
 998                 interpretChar(cur, '\"');
 999                 break;
1000
1001 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1002 // handling such that "self-insert" works on "arbitrary stuff" too, and
1003 // math-insert only handles special math things like "matrix".
1004         case LFUN_MATH_INSERT: {
1005                 cur.recordUndo();
1006                 if (cmd.argument() == "^" || cmd.argument() == "_") {
1007                         interpretChar(cur, cmd.argument()[0]);
1008                 } else
1009                         cur.niceInsert(cmd.argument());
1010                 break;
1011                 }
1012
1013         case LFUN_DIALOG_SHOW_NEW_INSET: {
1014                 docstring const & name = cmd.argument();
1015                 string data;
1016                 if (name == "ref") {
1017                         InsetMathRef tmp(name);
1018                         data = tmp.createDialogStr(to_utf8(name));
1019                 }
1020                 cur.bv().showDialog(to_utf8(name), data);
1021                 break;
1022         }
1023
1024         case LFUN_INSET_INSERT: {
1025                 MathData ar;
1026                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1027                         cur.recordUndo();
1028                         cur.insert(ar);
1029                 } else
1030                         cur.undispatched();
1031                 break;
1032         }
1033         case LFUN_INSET_DISSOLVE:
1034                 if (!asHullInset()) {
1035                         cur.recordUndoInset();
1036                         cur.pullArg();
1037                 }
1038                 break;
1039
1040         default:
1041                 InsetMath::doDispatch(cur, cmd);
1042                 break;
1043         }
1044 }
1045
1046
1047 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1048         // look for macro to open/close, but stay in mathed
1049         for (; !it.empty(); it.pop_back()) {
1050
1051                 // go backward through the current cell
1052                 Inset * inset = it.nextInset();
1053                 while (inset && inset->asInsetMath()) {
1054                         MathMacro * macro = inset->asInsetMath()->asMacro();
1055                         if (macro) {
1056                                 // found the an macro to open/close?
1057                                 if (macro->folded() != fold)
1058                                         return true;
1059
1060                                 // Wrong folding state.
1061                                 // If this was the first we see in this slice, look further left,
1062                                 // otherwise go up.
1063                                 if (inset != it.nextInset())
1064                                         break;
1065                         }
1066
1067                         // go up if this was the left most position
1068                         if (it.pos() == 0)
1069                                 break;
1070
1071                         // go left
1072                         it.pos()--;
1073                         inset = it.nextInset();
1074                 }
1075         }
1076
1077         return false;
1078 }
1079
1080
1081 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1082                 FuncStatus & flag) const
1083 {
1084         // the font related toggles
1085         //string tc = "mathnormal";
1086         bool ret = true;
1087         string const arg = to_utf8(cmd.argument());
1088         switch (cmd.action) {
1089         case LFUN_TABULAR_FEATURE:
1090                 flag.enabled(false);
1091                 break;
1092 #if 0
1093         case LFUN_TABULAR_FEATURE:
1094                 // FIXME: check temporarily disabled
1095                 // valign code
1096                 char align = mathcursor::valign();
1097                 if (align == '\0') {
1098                         enable = false;
1099                         break;
1100                 }
1101                 if (cmd.argument().empty()) {
1102                         flag.clear();
1103                         break;
1104                 }
1105                 if (!contains("tcb", cmd.argument()[0])) {
1106                         enable = false;
1107                         break;
1108                 }
1109                 flag.setOnOff(cmd.argument()[0] == align);
1110                 break;
1111 #endif
1112         /// We have to handle them since 1.4 blocks all unhandled actions
1113         case LFUN_FONT_ITAL:
1114         case LFUN_FONT_BOLD:
1115         case LFUN_FONT_SANS:
1116         case LFUN_FONT_EMPH:
1117         case LFUN_FONT_TYPEWRITER:
1118         case LFUN_FONT_NOUN:
1119         case LFUN_FONT_ROMAN:
1120         case LFUN_FONT_DEFAULT:
1121                 flag.enabled(true);
1122                 break;
1123         case LFUN_MATH_MUTATE:
1124                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1125                 flag.setOnOff(false);
1126                 break;
1127
1128         // we just need to be in math mode to enable that
1129         case LFUN_MATH_SIZE:
1130         case LFUN_MATH_SPACE:
1131         case LFUN_MATH_LIMITS:
1132         case LFUN_MATH_EXTERN:
1133                 flag.enabled(true);
1134                 break;
1135
1136         case LFUN_FONT_FRAK:
1137                 flag.enabled(currentMode() != TEXT_MODE);
1138                 break;
1139
1140         case LFUN_MATH_INSERT: {
1141                 bool const textarg =
1142                         arg == "\\textbf"   || arg == "\\textsf" ||
1143                         arg == "\\textrm"   || arg == "\\textmd" ||
1144                         arg == "\\textit"   || arg == "\\textsc" ||
1145                         arg == "\\textsl"   || arg == "\\textup" ||
1146                         arg == "\\texttt"   || arg == "\\textbb" ||
1147                         arg == "\\textnormal";
1148                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1149                 break;
1150         }
1151
1152         case LFUN_MATH_MATRIX:
1153                 flag.enabled(currentMode() == MATH_MODE);
1154                 break;
1155
1156         case LFUN_INSET_INSERT: {
1157                 // Don't test createMathInset_fromDialogStr(), since
1158                 // getStatus is not called with a valid reference and the
1159                 // dialog would not be applyable.
1160                 string const name = cmd.getArg(0);
1161                 flag.enabled(name == "ref");
1162                 break;
1163         }
1164
1165         case LFUN_MATH_DELIM:
1166         case LFUN_MATH_BIGDELIM:
1167                 // Don't do this with multi-cell selections
1168                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1169                 break;
1170
1171         case LFUN_MATH_MACRO_FOLD:
1172         case LFUN_MATH_MACRO_UNFOLD: {
1173                 Cursor it = cur;
1174                 bool found = findMacroToFoldUnfold(it, cmd.action == LFUN_MATH_MACRO_FOLD);
1175                 flag.enabled(found);
1176                 break;
1177         }
1178
1179         case LFUN_SPECIALCHAR_INSERT:
1180                 // FIXME: These would probably make sense in math-text mode
1181                 flag.enabled(false);
1182                 break;
1183
1184         case LFUN_INSET_DISSOLVE:
1185                 flag.enabled(!asHullInset());
1186                 break;
1187
1188         default:
1189                 ret = false;
1190                 break;
1191         }
1192         return ret;
1193 }
1194
1195
1196 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1197 {
1198         cur.push(*this);
1199         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_RIGHT ||
1200                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1201         cur.idx() = enter_front ? 0 : cur.lastidx();
1202         cur.pos() = enter_front ? 0 : cur.lastpos();
1203         cur.resetAnchor();
1204         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1205 }
1206
1207
1208 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1209 {
1210         int idx_min = 0;
1211         int dist_min = 1000000;
1212         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1213                 int const d = cell(i).dist(cur.bv(), x, y);
1214                 if (d < dist_min) {
1215                         dist_min = d;
1216                         idx_min = i;
1217                 }
1218         }
1219         MathData & ar = cell(idx_min);
1220         cur.push(*this);
1221         cur.idx() = idx_min;
1222         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1223
1224         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1225         if (dist_min == 0) {
1226                 // hit inside cell
1227                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1228                         if (ar[i]->covers(cur.bv(), x, y))
1229                                 return ar[i].nucleus()->editXY(cur, x, y);
1230         }
1231         return this;
1232 }
1233
1234
1235 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1236 {
1237         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1238         BufferView & bv = cur.bv();
1239         bool do_selection = cmd.button() == mouse_button::button1
1240                 && cmd.argument() == "region-select";
1241         bv.mouseSetCursor(cur, do_selection);
1242         if (cmd.button() == mouse_button::button1) {
1243                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1244                 // Update the cursor update flags as needed:
1245                 //
1246                 // Update::Decoration: tells to update the decoration
1247                 //                     (visual box corners that define
1248                 //                     the inset)/
1249                 // Update::FitCursor: adjust the screen to the cursor
1250                 //                    position if needed
1251                 // cur.result().update(): don't overwrite previously set flags.
1252                 cur.updateFlags(Update::Decoration | Update::FitCursor
1253                                 | cur.result().update());
1254         } else if (cmd.button() == mouse_button::button2) {
1255                 if (cap::selection()) {
1256                         // See comment in Text::dispatch why we do this
1257                         cap::copySelectionToStack();
1258                         cmd = FuncRequest(LFUN_PASTE, "0");
1259                         doDispatch(bv.cursor(), cmd);
1260                 } else {
1261                         MathData ar;
1262                         asArray(theSelection().get(), ar);
1263                         bv.cursor().insert(ar);
1264                 }
1265         }
1266 }
1267
1268
1269 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1270 {
1271         // only select with button 1
1272         if (cmd.button() == mouse_button::button1) {
1273                 Cursor & bvcur = cur.bv().cursor();
1274                 if (bvcur.anchor_.hasPart(cur)) {
1275                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1276                         bvcur.setCursor(cur);
1277                         bvcur.selection() = true;
1278                         //lyxerr << "MOTION " << bvcur << endl;
1279                 } else
1280                         cur.undispatched();
1281         }
1282 }
1283
1284
1285 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1286 {
1287         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1288
1289         if (cmd.button() == mouse_button::button1) {
1290                 if (!cur.selection())
1291                         cur.noUpdate();
1292                 else {
1293                         Cursor & bvcur = cur.bv().cursor();
1294                         bvcur.selection() = true;
1295                 }
1296                 return;
1297         }
1298
1299         cur.undispatched();
1300 }
1301
1302
1303 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1304 {
1305         //lyxerr << "interpret 2: '" << c << "'" << endl;
1306         docstring save_selection;
1307         if (c == '^' || c == '_')
1308                 save_selection = grabAndEraseSelection(cur);
1309
1310         cur.clearTargetX();
1311
1312         // handle macroMode
1313         if (cur.inMacroMode()) {
1314                 docstring name = cur.macroName();
1315
1316                 /// are we currently typing '#1' or '#2' or...?
1317                 if (name == "\\#") {
1318                         cur.backspace();
1319                         int n = c - '0';
1320                         if (n >= 1 && n <= 9)
1321                                 cur.insert(new MathMacroArgument(n));
1322                         return true;
1323                 }
1324
1325                 // do not finish macro for known * commands
1326                 MathWordList const & mwl = mathedWordList();
1327                 bool star_macro = c == '*'
1328                         && (mwl.find(name.substr(1) + "*") != mwl.end()
1329                             || cur.buffer().getMacro(name.substr(1) + "*", cur, true));
1330                 if (isAlphaASCII(c) || star_macro) {
1331                         cur.activeMacro()->setName(name + docstring(1, c));
1332                         return true;
1333                 }
1334
1335                 // handle 'special char' macros
1336                 if (name == "\\") {
1337                         // remove the '\\'
1338                         if (c == '\\') {
1339                                 cur.backspace();
1340                                 if (currentMode() == InsetMath::TEXT_MODE)
1341                                         cur.niceInsert(createInsetMath("textbackslash"));
1342                                 else
1343                                         cur.niceInsert(createInsetMath("backslash"));
1344                         } else if (c == '{') {
1345                                 cur.backspace();
1346                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1347                         } else if (c == '%') {
1348                                 cur.backspace();
1349                                 cur.niceInsert(MathAtom(new InsetMathComment));
1350                         } else if (c == '#') {
1351                                 BOOST_ASSERT(cur.activeMacro());
1352                                 cur.activeMacro()->setName(name + docstring(1, c));
1353                         } else {
1354                                 cur.backspace();
1355                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1356                         }
1357                         return true;
1358                 }
1359
1360                 // One character big delimiters. The others are handled in
1361                 // interpretString().
1362                 latexkeys const * l = in_word_set(name.substr(1));
1363                 if (name[0] == '\\' && l && l->inset == "big") {
1364                         docstring delim;
1365                         switch (c) {
1366                         case '{':
1367                                 delim = from_ascii("\\{");
1368                                 break;
1369                         case '}':
1370                                 delim = from_ascii("\\}");
1371                                 break;
1372                         default:
1373                                 delim = docstring(1, c);
1374                                 break;
1375                         }
1376                         if (InsetMathBig::isBigInsetDelim(delim)) {
1377                                 // name + delim ared a valid InsetMathBig.
1378                                 // We can't use cur.macroModeClose() because
1379                                 // it does not handle delim.
1380                                 InsetMathUnknown * p = cur.activeMacro();
1381                                 p->finalize();
1382                                 --cur.pos();
1383                                 cur.cell().erase(cur.pos());
1384                                 cur.plainInsert(MathAtom(
1385                                         new InsetMathBig(name.substr(1), delim)));
1386                                 return true;
1387                         }
1388                 }
1389
1390                 // leave macro mode and try again if necessary
1391                 cur.macroModeClose();
1392                 if (c == '{')
1393                         cur.niceInsert(MathAtom(new InsetMathBrace));
1394                 else if (c != ' ')
1395                         interpretChar(cur, c);
1396                 return true;
1397         }
1398
1399         // This is annoying as one has to press <space> far too often.
1400         // Disable it.
1401
1402 #if 0
1403                 // leave autocorrect mode if necessary
1404                 if (autocorrect() && c == ' ') {
1405                         autocorrect() = false;
1406                         return true;
1407                 }
1408 #endif
1409
1410         // just clear selection on pressing the space bar
1411         if (cur.selection() && c == ' ') {
1412                 cur.selection() = false;
1413                 return true;
1414         }
1415
1416         if (c == '\\') {
1417                 //lyxerr << "starting with macro" << endl;
1418                 docstring const safe = cap::grabAndEraseSelection(cur);
1419                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1420                 return true;
1421         }
1422
1423         selClearOrDel(cur);
1424
1425         if (c == '\n') {
1426                 if (currentMode() == InsetMath::TEXT_MODE)
1427                         cur.insert(c);
1428                 return true;
1429         }
1430
1431         if (c == ' ') {
1432                 if (currentMode() == InsetMath::TEXT_MODE) {
1433                         // insert spaces in text mode,
1434                         // but suppress direct insertion of two spaces in a row
1435                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1436                         // it is better than nothing...
1437                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1438                                 cur.insert(c);
1439                                 // FIXME: we have to enable full redraw here because of the
1440                                 // visual box corners that define the inset. If we know for
1441                                 // sure that we stay within the same cell we can optimize for
1442                                 // that using:
1443                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1444                         }
1445                         return true;
1446                 }
1447                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1448                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1449                         // FIXME: we have to enable full redraw here because of the
1450                         // visual box corners that define the inset. If we know for
1451                         // sure that we stay within the same cell we can optimize for
1452                         // that using:
1453                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1454                         return true;
1455                 }
1456
1457                 if (cur.popForward()) {
1458                         // FIXME: we have to enable full redraw here because of the
1459                         // visual box corners that define the inset. If we know for
1460                         // sure that we stay within the same cell we can optimize for
1461                         // that using:
1462                         //cur.updateFlags(Update::FitCursor);
1463                         return true;
1464                 }
1465
1466                 // if we are at the very end, leave the formula
1467                 return cur.pos() != cur.lastpos();
1468         }
1469
1470         // These shouldn't work in text mode:
1471         if (currentMode() != InsetMath::TEXT_MODE) {
1472                 if (c == '_') {
1473                         script(cur, false, save_selection);
1474                         return true;
1475                 }
1476                 if (c == '^') {
1477                         script(cur, true, save_selection);
1478                         return true;
1479                 }
1480                 if (c == '~') {
1481                         cur.niceInsert(createInsetMath("sim"));
1482                         return true;
1483                 }
1484         }
1485
1486         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1487             c == '%' || c == '_' || c == '^') {
1488                 cur.niceInsert(createInsetMath(docstring(1, c)));
1489                 return true;
1490         }
1491
1492
1493         // try auto-correction
1494         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1495         //      return true;
1496
1497         // no special circumstances, so insert the character without any fuss
1498         cur.insert(c);
1499         cur.autocorrect() = true;
1500         return true;
1501 }
1502
1503
1504 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1505 {
1506         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1507         // possible
1508         if (!cur.empty() && cur.pos() > 0 &&
1509             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1510                 if (InsetMathBig::isBigInsetDelim(str)) {
1511                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1512                         if (prev[0] == '\\') {
1513                                 prev = prev.substr(1);
1514                                 latexkeys const * l = in_word_set(prev);
1515                                 if (l && l->inset == "big") {
1516                                         cur.cell()[cur.pos() - 1] =
1517                                                 MathAtom(new InsetMathBig(prev, str));
1518                                         return true;
1519                                 }
1520                         }
1521                 }
1522         }
1523         return false;
1524 }
1525
1526
1527 bool InsetMathNest::script(Cursor & cur, bool up,
1528                 docstring const & save_selection)
1529 {
1530         // Hack to get \^ and \_ working
1531         //lyxerr << "handling script: up: " << up << endl;
1532         if (cur.inMacroMode() && cur.macroName() == "\\") {
1533                 if (up)
1534                         cur.niceInsert(createInsetMath("mathcircumflex"));
1535                 else
1536                         interpretChar(cur, '_');
1537                 return true;
1538         }
1539
1540         cur.macroModeClose();
1541         if (asScriptInset() && cur.idx() == 0) {
1542                 // we are in a nucleus of a script inset, move to _our_ script
1543                 InsetMathScript * inset = asScriptInset();
1544                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1545                 inset->ensure(up);
1546                 cur.idx() = inset->idxOfScript(up);
1547                 cur.pos() = 0;
1548         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1549                 --cur.pos();
1550                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1551                 cur.push(*inset);
1552                 inset->ensure(up);
1553                 cur.idx() = inset->idxOfScript(up);
1554                 cur.pos() = cur.lastpos();
1555         } else {
1556                 // convert the thing to our left to a scriptinset or create a new
1557                 // one if in the very first position of the array
1558                 if (cur.pos() == 0) {
1559                         //lyxerr << "new scriptinset" << endl;
1560                         cur.insert(new InsetMathScript(up));
1561                 } else {
1562                         //lyxerr << "converting prev atom " << endl;
1563                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1564                 }
1565                 --cur.pos();
1566                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1567                 // See comment in MathParser.cpp for special handling of {}-bases
1568
1569                 cur.push(*inset);
1570                 cur.idx() = 1;
1571                 cur.pos() = 0;
1572         }
1573         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1574         cur.niceInsert(save_selection);
1575         cur.resetAnchor();
1576         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1577         return true;
1578 }
1579
1580
1581 bool InsetMathNest::completionSupported(Cursor const & cur) const
1582 {
1583         return cur.inMacroMode();
1584 }
1585
1586
1587 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
1588 {
1589         return cur.inMacroMode();
1590 }
1591
1592
1593 bool InsetMathNest::automaticInlineCompletion() const
1594 {
1595         return lyxrc.completion_inline_math;
1596 }
1597
1598
1599 bool InsetMathNest::automaticPopupCompletion() const
1600 {
1601         return lyxrc.completion_popup_math;
1602 }
1603
1604
1605 Inset::CompletionList const *
1606 InsetMathNest::createCompletionList(Cursor const & cur) const
1607 {
1608         if (!cur.inMacroMode())
1609                 return 0;
1610
1611         return new MathCompletionList(cur);
1612 }
1613
1614
1615 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
1616 {
1617         if (!cur.inMacroMode())
1618                 return docstring();
1619
1620         return cur.activeMacro()->name();
1621 }
1622
1623
1624 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
1625                                      bool finished)
1626 {
1627         if (!cur.inMacroMode())
1628                 return false;
1629
1630         // append completion to active macro
1631         InsetMathUnknown * inset = cur.activeMacro();
1632         inset->setName(inset->name() + s);
1633
1634         // finish macro
1635         if (finished) {
1636 #if 0
1637                 // FIXME: this creates duplicates in the completion popup
1638                 // which looks ugly. Moreover the changes the list lengths
1639                 // which seems to
1640                 confuse the popup as well.
1641                 MathCompletionList::addToFavorites(inset->name());
1642 #endif
1643                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
1644         }
1645
1646         return true;
1647 }
1648
1649
1650 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
1651                                         Dimension & dim) const
1652 {
1653         Inset const * inset = cur.activeMacro();
1654         if (!inset)
1655                 return;
1656
1657         // get inset dimensions
1658         dim = cur.bv().coordCache().insets().dim(inset);
1659         // FIXME: these 3 are no accurate, but should depend on the font.
1660         // Now the popup jumps down if you enter a char with descent > 0.
1661         dim.des += 3;
1662         dim.asc += 3;
1663
1664         // and position
1665         Point xy
1666         = cur.bv().coordCache().insets().xy(inset);
1667         x = xy.x_;
1668         y = xy.y_;
1669 }
1670
1671
1672 bool InsetMathNest::cursorMathForward(Cursor & cur)
1673 {
1674         if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
1675                 cur.pushBackward(*cur.nextAtom().nucleus());
1676                 cur.inset().idxFirst(cur);
1677                 return true;
1678         }
1679         if (cur.posForward() || idxForward(cur) || cur.selection())
1680                 return true;
1681         // try to pop forwards --- but don't pop out of math! leave that to
1682         // the FINISH lfuns
1683         int s = cur.depth() - 2;
1684         if (s >= 0 && cur[s].inset().asInsetMath())
1685                 return cur.popForward();
1686         return false;
1687 }
1688
1689
1690 bool InsetMathNest::cursorMathBackward(Cursor & cur)
1691 {
1692         if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
1693                 cur.posBackward();
1694                 cur.push(*cur.nextAtom().nucleus());
1695                 cur.inset().idxLast(cur);
1696                 return true;
1697         }
1698         if (cur.posBackward() || idxBackward(cur) || cur.selection())
1699                 return true;
1700         // try to pop backwards --- but don't pop out of math! leave that to
1701         // the FINISH lfuns
1702         int s = cur.depth() - 2;
1703         if (s >= 0 && cur[s].inset().asInsetMath())
1704                 return cur.popBackward();
1705         return false;
1706 }
1707
1708
1709 ////////////////////////////////////////////////////////////////////
1710
1711 MathCompletionList::MathCompletionList(Cursor const & cur)
1712 {
1713         // fill it with macros from the buffer
1714         MacroNameSet macros;
1715         cur.buffer().listMacroNames(macros);
1716         MacroNameSet::const_iterator it;
1717         for (it = macros.begin(); it != macros.end(); ++it) {
1718                 if (cur.buffer().getMacro(*it, cur, false))
1719                         locals.push_back("\\" + *it);
1720         }
1721         sort(locals.begin(), locals.end());
1722
1723         if (globals.size() > 0)
1724                 return;
1725
1726         // fill in global macros
1727         macros.clear();
1728         MacroTable::globalMacros().getMacroNames(macros);
1729         lyxerr << "Globals completion macros: ";
1730         for (it = macros.begin(); it != macros.end(); ++it) {
1731                 lyxerr << "\\" + *it << " ";
1732                 globals.push_back("\\" + *it);
1733         }
1734         lyxerr << std::endl;
1735
1736         // fill in global commands
1737         globals.push_back(from_ascii("\\boxed"));
1738         globals.push_back(from_ascii("\\fbox"));
1739         globals.push_back(from_ascii("\\framebox"));
1740         globals.push_back(from_ascii("\\makebox"));
1741         globals.push_back(from_ascii("\\kern"));
1742         globals.push_back(from_ascii("\\xrightarrow"));
1743         globals.push_back(from_ascii("\\xleftarrow"));
1744         globals.push_back(from_ascii("\\split"));
1745         globals.push_back(from_ascii("\\gathered"));
1746         globals.push_back(from_ascii("\\aligned"));
1747         globals.push_back(from_ascii("\\alignedat"));
1748         globals.push_back(from_ascii("\\cases"));
1749         globals.push_back(from_ascii("\\substack"));
1750         globals.push_back(from_ascii("\\subarray"));
1751         globals.push_back(from_ascii("\\array"));
1752         globals.push_back(from_ascii("\\sqrt"));
1753         globals.push_back(from_ascii("\\root"));
1754         globals.push_back(from_ascii("\\tabular"));
1755         globals.push_back(from_ascii("\\stackrel"));
1756         globals.push_back(from_ascii("\\binom"));
1757         globals.push_back(from_ascii("\\choose"));
1758         globals.push_back(from_ascii("\\choose"));
1759         globals.push_back(from_ascii("\\frac"));
1760         globals.push_back(from_ascii("\\over"));
1761         globals.push_back(from_ascii("\\nicefrac"));
1762         globals.push_back(from_ascii("\\unitfrac"));
1763         globals.push_back(from_ascii("\\unitfracthree"));
1764         globals.push_back(from_ascii("\\unitone"));
1765         globals.push_back(from_ascii("\\unittwo"));
1766         globals.push_back(from_ascii("\\infer"));
1767         globals.push_back(from_ascii("\\atop"));
1768         globals.push_back(from_ascii("\\lefteqn"));
1769         globals.push_back(from_ascii("\\boldsymbol"));
1770         globals.push_back(from_ascii("\\bm"));
1771         globals.push_back(from_ascii("\\color"));
1772         globals.push_back(from_ascii("\\normalcolor"));
1773         globals.push_back(from_ascii("\\textcolor"));
1774         globals.push_back(from_ascii("\\dfrac"));
1775         globals.push_back(from_ascii("\\tfrac"));
1776         globals.push_back(from_ascii("\\dbinom"));
1777         globals.push_back(from_ascii("\\tbinom"));
1778         globals.push_back(from_ascii("\\hphantom"));
1779         globals.push_back(from_ascii("\\phantom"));
1780         globals.push_back(from_ascii("\\vphantom"));
1781         MathWordList const & words = mathedWordList();
1782         MathWordList::const_iterator it2;
1783         lyxerr << "Globals completion commands: ";
1784         for (it2 = words.begin(); it2 != words.end(); ++it2) {
1785                 globals.push_back("\\" + (*it2).first);
1786                 lyxerr << "\\" + (*it2).first << " ";
1787         }
1788         lyxerr << std::endl;
1789         sort(globals.begin(), globals.end());
1790 }
1791
1792
1793 MathCompletionList::~MathCompletionList()
1794 {
1795 }
1796
1797
1798 size_type MathCompletionList::size() const
1799 {
1800         return locals.size() + globals.size();
1801 }
1802
1803
1804 docstring const & MathCompletionList::data(size_t idx) const
1805 {
1806         size_t lsize = locals.size();
1807         if (idx >= lsize)
1808                 return globals[idx - lsize];
1809         else
1810                 return locals[idx];
1811 }
1812
1813
1814 std::string MathCompletionList::icon(size_t idx) const
1815 {
1816         // get the latex command
1817         docstring cmd;
1818         size_t lsize = locals.size();
1819         if (idx >= lsize)
1820                 cmd = globals[idx - lsize];
1821         else
1822                 cmd = locals[idx];
1823
1824         // get the icon resource name by stripping the backslash
1825         return "images/math/" + to_utf8(cmd.substr(1)) + ".png";
1826 }
1827
1828 std::vector<docstring> MathCompletionList::globals;
1829
1830 } // namespace lyx