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 "MathCompletionList.h"
  29 #include "MathData.h"
  30 #include "MathFactory.h"
  31 #include "MathMacro.h"
  32 #include "MathMacroArgument.h"
  33 #include "MathParser.h"
  34 #include "MathStream.h"
  35 #include "MathSupport.h"
  36
  37 #include "Bidi.h"
  38 #include "Buffer.h"
  39 #include "BufferView.h"
  40 #include "CoordCache.h"
  41 #include "Cursor.h"
  42 #include "CutAndPaste.h"
  43 #include "DispatchResult.h"
  44 #include "FuncRequest.h"
  45 #include "FuncStatus.h"
  46 #include "LyXFunc.h"
  47 #include "LyXRC.h"
  48 #include "OutputParams.h"
  49 #include "Text.h"
  50
  51 #include "frontends/Clipboard.h"
  52 #include "frontends/Painter.h"
  53 #include "frontends/Selection.h"
  54
  55 #include "support/lassert.h"
  56 #include "support/debug.h"
  57 #include "support/gettext.h"
  58 #include "support/lstrings.h"
  59 #include "support/textutils.h"
  60 #include "support/docstream.h"
  61
  62 #include <algorithm>
  63 #include <sstream>
  64
  65 using namespace std;
  66 using namespace lyx::support;
  67
  68 namespace lyx {
  69
  70 using cap::copySelection;
  71 using cap::grabAndEraseSelection;
  72 using cap::cutSelection;
  73 using cap::replaceSelection;
  74 using cap::selClearOrDel;
  75
  76
  77 InsetMathNest::InsetMathNest(idx_type nargs)
  78         : cells_(nargs), lock_(false), mouse_hover_(false)
  79 {}
  80
  81
  82 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  83         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_),
  84           mouse_hover_(false)
  85 {}
  86
  87
  88 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
  89 {
  90         cells_ = inset.cells_;
  91         lock_ = inset.lock_;
  92         mouse_hover_ = false;
  93         InsetMath::operator=(inset);
  94         return *this;
  95 }
  96
  97
  98 InsetMath::idx_type InsetMathNest::nargs() const
  99 {
 100         return cells_.size();
 101 }
 102
 103
 104 void InsetMathNest::cursorPos(BufferView const & bv,
 105                 CursorSlice const & sl, bool /*boundary*/,
 106                 int & x, int & y) const
 107 {
 108 // FIXME: This is a hack. Ideally, the coord cache should not store
 109 // absolute positions, but relative ones. This would mean to call
 110 // setXY() not in MathData::draw(), but in the parent insets' draw()
 111 // with the correctly adjusted x,y values. But this means that we'd have
 112 // to touch all (math)inset's draw() methods. Right now, we'll store
 113 // absolute value, and make them here relative, only to make them
 114 // absolute again when actually drawing the cursor. What a mess.
 115         LASSERT(&sl.inset() == this, /**/);
 116         MathData const & ar = sl.cell();
 117         CoordCache const & coord_cache = bv.coordCache();
 118         if (!coord_cache.getArrays().has(&ar)) {
 119                 // this can (semi-)legally happen if we just created this cell
 120                 // and it never has been drawn before. So don't ASSERT.
 121                 //lyxerr << "no cached data for array " << &ar << endl;
 122                 x = 0;
 123                 y = 0;
 124                 return;
 125         }
 126         Point const pt = coord_cache.getArrays().xy(&ar);
 127         if (!coord_cache.getInsets().has(this)) {
 128                 // same as above
 129                 //lyxerr << "no cached data for inset " << this << endl;
 130                 x = 0;
 131                 y = 0;
 132                 return;
 133         }
 134         Point const pt2 = coord_cache.getInsets().xy(this);
 135         //lyxerr << "retrieving position cache for MathData "
 136         //      << pt.x_ << ' ' << pt.y_ << endl;
 137         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 138         y = pt.y_ - pt2.y_;
 139 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 140 //              << " asc: " << ascent() << "  des: " << descent()
 141 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 142         // move cursor visually into empty cells ("blue rectangles");
 143         if (ar.empty())
 144                 x += 2;
 145 }
 146
 147
 148 void InsetMathNest::metrics(MetricsInfo const & mi) const
 149 {
 150         MetricsInfo m = mi;
 151         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 152                 Dimension dim;
 153                 cell(i).metrics(m, dim);
 154         }
 155 }
 156
 157
 158 bool InsetMathNest::idxNext(Cursor & cur) const
 159 {
 160         LASSERT(&cur.inset() == this, /**/);
 161         if (cur.idx() == cur.lastidx())
 162                 return false;
 163         ++cur.idx();
 164         cur.pos() = 0;
 165         return true;
 166 }
 167
 168
 169 bool InsetMathNest::idxForward(Cursor & cur) const
 170 {
 171         return idxNext(cur);
 172 }
 173
 174
 175 bool InsetMathNest::idxPrev(Cursor & cur) const
 176 {
 177         LASSERT(&cur.inset() == this, /**/);
 178         if (cur.idx() == 0)
 179                 return false;
 180         --cur.idx();
 181         cur.pos() = cur.lastpos();
 182         return true;
 183 }
 184
 185
 186 bool InsetMathNest::idxBackward(Cursor & cur) const
 187 {
 188         return idxPrev(cur);
 189 }
 190
 191
 192 bool InsetMathNest::idxFirst(Cursor & cur) const
 193 {
 194         LASSERT(&cur.inset() == this, /**/);
 195         if (nargs() == 0)
 196                 return false;
 197         cur.idx() = 0;
 198         cur.pos() = 0;
 199         return true;
 200 }
 201
 202
 203 bool InsetMathNest::idxLast(Cursor & cur) const
 204 {
 205         LASSERT(&cur.inset() == this, /**/);
 206         if (nargs() == 0)
 207                 return false;
 208         cur.idx() = cur.lastidx();
 209         cur.pos() = cur.lastpos();
 210         return true;
 211 }
 212
 213
 214 void InsetMathNest::dump() const
 215 {
 216         odocstringstream oss;
 217         WriteStream os(oss);
 218         os << "---------------------------------------------\n";
 219         write(os);
 220         os << "\n";
 221         for (idx_type i = 0, n = nargs(); i != n; ++i)
 222                 os << cell(i) << "\n";
 223         os << "---------------------------------------------\n";
 224         lyxerr << to_utf8(oss.str());
 225 }
 226
 227
 228 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 229 {
 230 #if 0
 231         if (lock_)
 232                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 233                                         Color_mathlockbg);
 234 #endif
 235         setPosCache(pi, x, y);
 236 }
 237
 238
 239 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 240 {
 241         BufferView & bv = *pi.base.bv;
 242         // this should use the x/y values given, not the cached values
 243         Cursor & cur = bv.cursor();
 244         if (!cur.selection())
 245                 return;
 246         if (&cur.inset() != this)
 247                 return;
 248
 249         // FIXME: hack to get position cache warm
 250         bool const original_drawing_state = pi.pain.isDrawingEnabled();
 251         pi.pain.setDrawingEnabled(false);
 252         draw(pi, x, y);
 253         pi.pain.setDrawingEnabled(original_drawing_state);
 254
 255         CursorSlice s1 = cur.selBegin();
 256         CursorSlice s2 = cur.selEnd();
 257
 258         //lyxerr << "InsetMathNest::drawing selection: "
 259         //      << " s1: " << s1 << " s2: " << s2 << endl;
 260         if (s1.idx() == s2.idx()) {
 261                 MathData const & c = cell(s1.idx());
 262                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 263                 int x1 = g.pos.x_ + c.pos2x(pi.base.bv, s1.pos());
 264                 int y1 = g.pos.y_ - g.dim.ascent();
 265                 int x2 = g.pos.x_ + c.pos2x(pi.base.bv, s2.pos());
 266                 int y2 = g.pos.y_ + g.dim.descent();
 267                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 268         //lyxerr << "InsetMathNest::drawing selection 3: "
 269         //      << " x1: " << x1 << " x2: " << x2
 270         //      << " y1: " << y1 << " y2: " << y2 << endl;
 271         } else {
 272                 for (idx_type i = 0; i < nargs(); ++i) {
 273                         if (idxBetween(i, s1.idx(), s2.idx())) {
 274                                 MathData const & c = cell(i);
 275                                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 276                                 int x1 = g.pos.x_;
 277                                 int y1 = g.pos.y_ - g.dim.ascent();
 278                                 int x2 = g.pos.x_ + g.dim.width();
 279                                 int y2 = g.pos.y_ + g.dim.descent();
 280                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 281                         }
 282                 }
 283         }
 284 }
 285
 286
 287 void InsetMathNest::validate(LaTeXFeatures & features) const
 288 {
 289         for (idx_type i = 0; i < nargs(); ++i)
 290                 cell(i).validate(features);
 291 }
 292
 293
 294 void InsetMathNest::replace(ReplaceData & rep)
 295 {
 296         for (idx_type i = 0; i < nargs(); ++i)
 297                 cell(i).replace(rep);
 298 }
 299
 300
 301 bool InsetMathNest::contains(MathData const & ar) const
 302 {
 303         for (idx_type i = 0; i < nargs(); ++i)
 304                 if (cell(i).contains(ar))
 305                         return true;
 306         return false;
 307 }
 308
 309
 310 bool InsetMathNest::lock() const
 311 {
 312         return lock_;
 313 }
 314
 315
 316 void InsetMathNest::lock(bool l)
 317 {
 318         lock_ = l;
 319 }
 320
 321
 322 bool InsetMathNest::isActive() const
 323 {
 324         return nargs() > 0;
 325 }
 326
 327
 328 MathData InsetMathNest::glue() const
 329 {
 330         MathData ar;
 331         for (size_t i = 0; i < nargs(); ++i)
 332                 ar.append(cell(i));
 333         return ar;
 334 }
 335
 336
 337 void InsetMathNest::write(WriteStream & os) const
 338 {
 339         ModeSpecifier specifier(os, currentMode());
 340         docstring const latex_name = name();
 341         os << '\\' << latex_name;
 342         for (size_t i = 0; i < nargs(); ++i)
 343                 os << '{' << cell(i) << '}';
 344         if (nargs() == 0)
 345                 os.pendingSpace(true);
 346         if (lock_ && !os.latex()) {
 347                 os << "\\lyxlock";
 348                 os.pendingSpace(true);
 349         }
 350 }
 351
 352
 353 void InsetMathNest::normalize(NormalStream & os) const
 354 {
 355         os << '[' << name();
 356         for (size_t i = 0; i < nargs(); ++i)
 357                 os << ' ' << cell(i);
 358         os << ']';
 359 }
 360
 361
 362 int InsetMathNest::latex(odocstream & os, OutputParams const & runparams) const
 363 {
 364         WriteStream wi(os, runparams.moving_arg, true, runparams.dryrun,
 365                         runparams.encoding);
 366         write(wi);
 367         return wi.line();
 368 }
 369
 370
 371 bool InsetMathNest::setMouseHover(bool mouse_hover)
 372 {
 373         mouse_hover_ = mouse_hover;
 374         return true;
 375 }
 376
 377
 378 bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
 379 {
 380         // FIXME: look here
 381 #if 0
 382         MathData & ar = cur.cell();
 383         // remove base-only "scripts"
 384         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 385                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 386                 if (p && p->nargs() == 1) {
 387                         MathData ar = p->nuc();
 388                         erase(i);
 389                         insert(i, ar);
 390                         cur.adjust(i, ar.size() - 1);
 391                 }
 392         }
 393
 394         // glue adjacent font insets of the same kind
 395         for (pos_type i = 0; i + 1 < size(); ++i) {
 396                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 397                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 398                 if (p && q && p->name() == q->name()) {
 399                         p->cell(0).append(q->cell(0));
 400                         erase(i + 1);
 401                         cur.adjust(i, -1);
 402                 }
 403         }
 404 #endif
 405         return false;
 406 }
 407
 408
 409 void InsetMathNest::handleFont
 410         (Cursor & cur, docstring const & arg, char const * const font)
 411 {
 412         handleFont(cur, arg, from_ascii(font));
 413 }
 414
 415
 416 void InsetMathNest::handleFont(Cursor & cur, docstring const & arg,
 417         docstring const & font)
 418 {
 419         cur.recordUndoSelection();
 420
 421         // this whole function is a hack and won't work for incremental font
 422         // changes...
 423         if (cur.inset().asInsetMath()->name() == font)
 424                 cur.handleFont(to_utf8(font));
 425         else
 426                 handleNest(cur, createInsetMath(font), arg);
 427 }
 428
 429
 430 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest)
 431 {
 432         handleNest(cur, nest, docstring());
 433 }
 434
 435
 436 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest,
 437         docstring const & arg)
 438 {
 439         CursorSlice i1 = cur.selBegin();
 440         CursorSlice i2 = cur.selEnd();
 441         if (!i1.inset().asInsetMath())
 442                 return;
 443         if (i1.idx() == i2.idx()) {
 444                 // the easy case where only one cell is selected
 445                 cur.handleNest(nest);
 446                 cur.insert(arg);
 447                 return;
 448         }
 449
 450         // multiple selected cells in a simple non-grid inset
 451         if (i1.asInsetMath()->nrows() == 0 || i1.asInsetMath()->ncols() == 0) {
 452                 for (idx_type i = i1.idx(); i <= i2.idx(); ++i) {
 453                         // select cell
 454                         cur.idx() = i;
 455                         cur.pos() = 0;
 456                         cur.resetAnchor();
 457                         cur.pos() = cur.lastpos();
 458                         cur.setSelection();
 459
 460                         // change font of cell
 461                         cur.handleNest(nest);
 462                         cur.insert(arg);
 463
 464                         // cur is in the font inset now. If the loop continues,
 465                         // we need to get outside again for the next cell
 466                         if (i + 1 <= i2.idx())
 467                                 cur.pop_back();
 468                 }
 469                 return;
 470         }
 471
 472         // the complicated case with multiple selected cells in a grid
 473         row_type r1, r2;
 474         col_type c1, c2;
 475         cap::region(i1, i2, r1, r2, c1, c2);
 476         for (row_type row = r1; row <= r2; ++row) {
 477                 for (col_type col = c1; col <= c2; ++col) {
 478                         // select cell
 479                         cur.idx() = i1.asInsetMath()->index(row, col);
 480                         cur.pos() = 0;
 481                         cur.resetAnchor();
 482                         cur.pos() = cur.lastpos();
 483                         cur.setSelection();
 484
 485                         //
 486                         cur.handleNest(nest);
 487                         cur.insert(arg);
 488
 489                         // cur is in the font inset now. If the loop continues,
 490                         // we need to get outside again for the next cell
 491                         if (col + 1 <= c2 || row + 1 <= r2)
 492                                 cur.pop_back();
 493                 }
 494         }
 495 }
 496
 497
 498 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 499 {
 500         cur.recordUndoSelection();
 501         Font font;
 502         bool b;
 503         font.fromString(to_utf8(arg), b);
 504         if (font.fontInfo().color() != Color_inherit &&
 505             font.fontInfo().color() != Color_ignore)
 506                 handleNest(cur, MathAtom(new InsetMathColor(true, font.fontInfo().color())));
 507
 508         // FIXME: support other font changes here as well?
 509 }
 510
 511
 512 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 513 {
 514         //lyxerr << "InsetMathNest: request: " << cmd << endl;
 515
 516         switch (cmd.action) {
 517
 518         case LFUN_PASTE: {
 519                 cur.recordUndoSelection();
 520                 cur.message(_("Paste"));
 521                 replaceSelection(cur);
 522                 docstring topaste;
 523                 if (cmd.argument().empty() && !theClipboard().isInternal())
 524                         topaste = theClipboard().getAsText();
 525                 else {
 526                         size_t n = 0;
 527                         idocstringstream is(cmd.argument());
 528                         is >> n;
 529                         topaste = cap::selection(n);
 530                 }
 531                 cur.niceInsert(topaste);
 532                 cur.clearSelection(); // bug 393
 533                 cur.finishUndo();
 534                 break;
 535         }
 536
 537         case LFUN_CUT:
 538                 cur.recordUndo();
 539                 cutSelection(cur, true, true);
 540                 cur.message(_("Cut"));
 541                 // Prevent stale position >= size crash
 542                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 543                 cur.normalize();
 544                 break;
 545
 546         case LFUN_COPY:
 547                 copySelection(cur);
 548                 cur.message(_("Copy"));
 549                 break;
 550
 551         case LFUN_MOUSE_PRESS:
 552                 lfunMousePress(cur, cmd);
 553                 break;
 554
 555         case LFUN_MOUSE_MOTION:
 556                 lfunMouseMotion(cur, cmd);
 557                 break;
 558
 559         case LFUN_MOUSE_RELEASE:
 560                 lfunMouseRelease(cur, cmd);
 561                 break;
 562
 563         case LFUN_FINISHED_LEFT: // in math, left is backwards
 564         case LFUN_FINISHED_BACKWARD:
 565                 cur.bv().cursor() = cur;
 566                 break;
 567
 568         case LFUN_FINISHED_RIGHT: // in math, right is forward
 569         case LFUN_FINISHED_FORWARD:
 570                 ++cur.pos();
 571                 cur.bv().cursor() = cur;
 572                 break;
 573
 574         case LFUN_CHAR_RIGHT:
 575         case LFUN_CHAR_LEFT:
 576         case LFUN_CHAR_BACKWARD:
 577         case LFUN_CHAR_FORWARD:
 578                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 579         case LFUN_CHAR_RIGHT_SELECT:
 580         case LFUN_CHAR_LEFT_SELECT:
 581         case LFUN_CHAR_BACKWARD_SELECT:
 582         case LFUN_CHAR_FORWARD_SELECT: {
 583                 // are we in a selection?
 584                 bool select = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 585                                            || cmd.action == LFUN_CHAR_LEFT_SELECT
 586                                            || cmd.action == LFUN_CHAR_BACKWARD_SELECT
 587                                            || cmd.action == LFUN_CHAR_FORWARD_SELECT);
 588                 // are we moving forward or backwards?
 589                 // If the command was RIGHT or LEFT, then whether we're moving forward
 590                 // or backwards depends on the cursor movement mode (logical or visual):
 591                 //  * in visual mode, since math is always LTR, right -> forward,
 592                 //    left -> backwards
 593                 //  * in logical mode, the mapping is determined by the
 594                 //    reverseDirectionNeeded() function
 595
 596                 bool forward;
 597                 FuncCode finish_lfun;
 598
 599                 if (cmd.action == LFUN_CHAR_FORWARD
 600                                 || cmd.action == LFUN_CHAR_FORWARD_SELECT) {
 601                         forward = true;
 602                         finish_lfun = LFUN_FINISHED_FORWARD;
 603                 }
 604                 else if (cmd.action == LFUN_CHAR_BACKWARD
 605                                 || cmd.action == LFUN_CHAR_BACKWARD_SELECT) {
 606                         forward = false;
 607                         finish_lfun = LFUN_FINISHED_BACKWARD;
 608                 }
 609                 else {
 610                         bool right = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 611                                                   || cmd.action == LFUN_CHAR_RIGHT);
 612                         if (lyxrc.visual_cursor || !reverseDirectionNeeded(cur))
 613                                 forward = right;
 614                         else
 615                                 forward = !right;
 616
 617                         if (right)
 618                                 finish_lfun = LFUN_FINISHED_RIGHT;
 619                         else
 620                                 finish_lfun = LFUN_FINISHED_LEFT;
 621                 }
 622                 // Now that we know exactly what we want to do, let's do it!
 623                 cur.selHandle(select);
 624                 cur.autocorrect() = false;
 625                 cur.clearTargetX();
 626                 cur.macroModeClose();
 627                 // try moving forward or backwards as necessary...
 628                 if (!(forward ? cursorMathForward(cur) : cursorMathBackward(cur))) {
 629                         // ... and if movement failed, then finish forward or backwards
 630                         // as necessary
 631                         cmd = FuncRequest(finish_lfun);
 632                         cur.undispatched();
 633                 }
 634                 break;
 635         }
 636
 637         case LFUN_DOWN:
 638         case LFUN_UP:
 639                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 640         case LFUN_DOWN_SELECT:
 641         case LFUN_UP_SELECT: {
 642                 // close active macro
 643                 if (cur.inMacroMode()) {
 644                         cur.macroModeClose();
 645                         break;
 646                 }
 647
 648                 // stop/start the selection
 649                 bool select = cmd.action == LFUN_DOWN_SELECT ||
 650                         cmd.action == LFUN_UP_SELECT;
 651                 cur.selHandle(select);
 652
 653                 // go up/down
 654                 bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
 655                 bool successful = cur.upDownInMath(up);
 656                 if (successful)
 657                         break;
 658
 659                 if (cur.fixIfBroken())
 660                         // FIXME: Something bad happened. We pass the corrected Cursor
 661                         // instead of letting things go worse.
 662                         break;
 663
 664                 // We did not manage to move the cursor.
 665                 cur.undispatched();
 666                 break;
 667         }
 668
 669         case LFUN_MOUSE_DOUBLE:
 670         case LFUN_MOUSE_TRIPLE:
 671         case LFUN_WORD_SELECT:
 672                 cur.pos() = 0;
 673                 cur.idx() = 0;
 674                 cur.resetAnchor();
 675                 cur.setSelection(true);
 676                 cur.pos() = cur.lastpos();
 677                 cur.idx() = cur.lastidx();
 678                 break;
 679
 680         case LFUN_PARAGRAPH_UP:
 681         case LFUN_PARAGRAPH_DOWN:
 682                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 683         case LFUN_PARAGRAPH_UP_SELECT:
 684         case LFUN_PARAGRAPH_DOWN_SELECT:
 685                 break;
 686
 687         case LFUN_LINE_BEGIN:
 688         case LFUN_WORD_BACKWARD:
 689         case LFUN_WORD_LEFT:
 690                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 691         case LFUN_LINE_BEGIN_SELECT:
 692         case LFUN_WORD_BACKWARD_SELECT:
 693         case LFUN_WORD_LEFT_SELECT:
 694                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 695                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
 696                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 697                 cur.macroModeClose();
 698                 if (cur.pos() != 0) {
 699                         cur.pos() = 0;
 700                 } else if (cur.col() != 0) {
 701                         cur.idx() -= cur.col();
 702                         cur.pos() = 0;
 703                 } else if (cur.idx() != 0) {
 704                         cur.idx() = 0;
 705                         cur.pos() = 0;
 706                 } else {
 707                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 708                         cur.undispatched();
 709                 }
 710                 break;
 711
 712         case LFUN_WORD_FORWARD:
 713         case LFUN_WORD_RIGHT:
 714         case LFUN_LINE_END:
 715                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 716         case LFUN_WORD_FORWARD_SELECT:
 717         case LFUN_WORD_RIGHT_SELECT:
 718         case LFUN_LINE_END_SELECT:
 719                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 720                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
 721                                 cmd.action == LFUN_LINE_END_SELECT);
 722                 cur.macroModeClose();
 723                 cur.clearTargetX();
 724                 if (cur.pos() != cur.lastpos()) {
 725                         cur.pos() = cur.lastpos();
 726                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 727                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 728                         cur.pos() = cur.lastpos();
 729                 } else if (cur.idx() != cur.lastidx()) {
 730                         cur.idx() = cur.lastidx();
 731                         cur.pos() = cur.lastpos();
 732                 } else {
 733                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 734                         cur.undispatched();
 735                 }
 736                 break;
 737
 738         case LFUN_CELL_FORWARD:
 739                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 740                 cur.inset().idxNext(cur);
 741                 break;
 742
 743         case LFUN_CELL_BACKWARD:
 744                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 745                 cur.inset().idxPrev(cur);
 746                 break;
 747
 748         case LFUN_WORD_DELETE_BACKWARD:
 749         case LFUN_CHAR_DELETE_BACKWARD:
 750                 if (cur.pos() == 0)
 751                         // May affect external cell:
 752                         cur.recordUndoInset();
 753                 else
 754                         cur.recordUndoSelection();
 755                 // if the inset can not be removed from within, delete it
 756                 if (!cur.backspace()) {
 757                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 758                         cur.innerText()->dispatch(cur, cmd);
 759                 }
 760                 break;
 761
 762         case LFUN_WORD_DELETE_FORWARD:
 763         case LFUN_CHAR_DELETE_FORWARD:
 764                 if (cur.pos() == cur.lastpos())
 765                         // May affect external cell:
 766                         cur.recordUndoInset();
 767                 else
 768                         cur.recordUndoSelection();
 769                 // if the inset can not be removed from within, delete it
 770                 if (!cur.erase()) {
 771                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 772                         cur.innerText()->dispatch(cur, cmd);
 773                 }
 774                 break;
 775
 776         case LFUN_ESCAPE:
 777                 if (cur.selection())
 778                         cur.clearSelection();
 779                 else  {
 780                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 781                         cur.undispatched();
 782                 }
 783                 break;
 784
 785         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 786         // that is traversed by a single <CursorLeft>/<CursorRight>.
 787         case LFUN_INSET_TOGGLE:
 788                 cur.recordUndo();
 789                 lock(!lock());
 790                 cur.popForward();
 791                 break;
 792
 793         case LFUN_SELF_INSERT:
 794                 if (cmd.argument().size() != 1) {
 795                         cur.recordUndoSelection();
 796                         docstring const arg = cmd.argument();
 797                         if (!interpretString(cur, arg))
 798                                 cur.insert(arg);
 799                         break;
 800                 }
 801                 // Don't record undo steps if we are in macro mode and
 802                 // cmd.argument is the next character of the macro name.
 803                 // Otherwise we'll get an invalid cursor if we undo after
 804                 // the macro was finished and the macro is a known command,
 805                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 806                 // the InsetMathUnknown with name "frac" by an empty
 807                 // InsetMathFrac -> a pos value > 0 is invalid.
 808                 // A side effect is that an undo before the macro is finished
 809                 // undoes the complete macro, not only the last character.
 810                 if (!cur.inMacroMode())
 811                         cur.recordUndoSelection();
 812
 813                 // spacial handling of space. If we insert an inset
 814                 // via macro mode, we want to put the cursor inside it
 815                 // if relevant. Think typing "\frac<space>".
 816                 if (cmd.argument()[0] == ' '
 817                     && cur.inMacroMode() && cur.macroName() != "\\"
 818                     && cur.macroModeClose()) {
 819                         MathAtom const atom = cur.prevAtom();
 820                         if (atom->asNestInset() && atom->isActive()) {
 821                                 cur.posBackward();
 822                                 cur.pushBackward(*cur.nextInset());
 823                         }
 824                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 825                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 826                         cur.undispatched();
 827                 }
 828                 break;
 829
 830         //case LFUN_SERVER_GET_XY:
 831         //      sprintf(dispatch_buffer, "%d %d",);
 832         //      break;
 833
 834         case LFUN_SERVER_SET_XY: {
 835                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 836                 int x = 0;
 837                 int y = 0;
 838                 istringstream is(to_utf8(cmd.argument()));
 839                 is >> x >> y;
 840                 cur.setScreenPos(x, y);
 841                 break;
 842         }
 843
 844         // Special casing for superscript in case of LyX handling
 845         // dead-keys:
 846         case LFUN_ACCENT_CIRCUMFLEX:
 847                 if (cmd.argument().empty()) {
 848                         // do superscript if LyX handles
 849                         // deadkeys
 850                         cur.recordUndoSelection();
 851                         script(cur, true, grabAndEraseSelection(cur));
 852                 }
 853                 break;
 854
 855         case LFUN_ACCENT_UMLAUT:
 856         case LFUN_ACCENT_ACUTE:
 857         case LFUN_ACCENT_GRAVE:
 858         case LFUN_ACCENT_BREVE:
 859         case LFUN_ACCENT_DOT:
 860         case LFUN_ACCENT_MACRON:
 861         case LFUN_ACCENT_CARON:
 862         case LFUN_ACCENT_TILDE:
 863         case LFUN_ACCENT_CEDILLA:
 864         case LFUN_ACCENT_CIRCLE:
 865         case LFUN_ACCENT_UNDERDOT:
 866         case LFUN_ACCENT_TIE:
 867         case LFUN_ACCENT_OGONEK:
 868         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 869                 break;
 870
 871         //  Math fonts
 872         case LFUN_TEXTSTYLE_APPLY:
 873         case LFUN_TEXTSTYLE_UPDATE:
 874                 handleFont2(cur, cmd.argument());
 875                 break;
 876
 877         case LFUN_FONT_BOLD:
 878                 if (currentMode() == TEXT_MODE)
 879                         handleFont(cur, cmd.argument(), "textbf");
 880                 else
 881                         handleFont(cur, cmd.argument(), "mathbf");
 882                 break;
 883         case LFUN_FONT_BOLDSYMBOL:
 884                 if (currentMode() == TEXT_MODE)
 885                         handleFont(cur, cmd.argument(), "textbf");
 886                 else
 887                         handleFont(cur, cmd.argument(), "boldsymbol");
 888                 break;
 889         case LFUN_FONT_SANS:
 890                 if (currentMode() == TEXT_MODE)
 891                         handleFont(cur, cmd.argument(), "textsf");
 892                 else
 893                         handleFont(cur, cmd.argument(), "mathsf");
 894                 break;
 895         case LFUN_FONT_EMPH:
 896                 if (currentMode() == TEXT_MODE)
 897                         handleFont(cur, cmd.argument(), "emph");
 898                 else
 899                         handleFont(cur, cmd.argument(), "mathcal");
 900                 break;
 901         case LFUN_FONT_ROMAN:
 902                 if (currentMode() == TEXT_MODE)
 903                         handleFont(cur, cmd.argument(), "textrm");
 904                 else
 905                         handleFont(cur, cmd.argument(), "mathrm");
 906                 break;
 907         case LFUN_FONT_TYPEWRITER:
 908                 if (currentMode() == TEXT_MODE)
 909                         handleFont(cur, cmd.argument(), "texttt");
 910                 else
 911                         handleFont(cur, cmd.argument(), "mathtt");
 912                 break;
 913         case LFUN_FONT_FRAK:
 914                 handleFont(cur, cmd.argument(), "mathfrak");
 915                 break;
 916         case LFUN_FONT_ITAL:
 917                 if (currentMode() == TEXT_MODE)
 918                         handleFont(cur, cmd.argument(), "textit");
 919                 else
 920                         handleFont(cur, cmd.argument(), "mathit");
 921                 break;
 922         case LFUN_FONT_NOUN:
 923                 if (currentMode() == TEXT_MODE)
 924                         // FIXME: should be "noun"
 925                         handleFont(cur, cmd.argument(), "textsc");
 926                 else
 927                         handleFont(cur, cmd.argument(), "mathbb");
 928                 break;
 929         case LFUN_FONT_DEFAULT:
 930                 handleFont(cur, cmd.argument(), "textnormal");
 931                 break;
 932
 933         case LFUN_MATH_MODE: {
 934 #if 1
 935                 // ignore math-mode on when already in math mode
 936                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 937                         break;
 938                 cur.recordUndoSelection();
 939                 cur.macroModeClose();
 940                 docstring const save_selection = grabAndEraseSelection(cur);
 941                 selClearOrDel(cur);
 942                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 943                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 944                 cur.posBackward();
 945                 cur.pushBackward(*cur.nextInset());
 946                 cur.niceInsert(save_selection);
 947 #else
 948                 if (currentMode() == Inset::TEXT_MODE) {
 949                         cur.recordUndoSelection();
 950                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 951                         cur.message(_("create new math text environment ($...$)"));
 952                 } else {
 953                         handleFont(cur, cmd.argument(), "textrm");
 954                         cur.message(_("entered math text mode (textrm)"));
 955                 }
 956 #endif
 957                 break;
 958         }
 959
 960         case LFUN_MATH_SIZE: {
 961                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, cmd.argument());
 962                 doDispatch(cur, fr);
 963                 break;
 964         }
 965
 966         case LFUN_MATH_MATRIX: {
 967                 cur.recordUndo();
 968                 unsigned int m = 1;
 969                 unsigned int n = 1;
 970                 docstring v_align;
 971                 docstring h_align;
 972                 idocstringstream is(cmd.argument());
 973                 is >> m >> n >> v_align >> h_align;
 974                 if (m < 1)
 975                         m = 1;
 976                 if (n < 1)
 977                         n = 1;
 978                 v_align += 'c';
 979                 cur.niceInsert(
 980                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 981                 break;
 982         }
 983
 984         case LFUN_MATH_DELIM: {
 985                 docstring ls;
 986                 docstring rs = split(cmd.argument(), ls, ' ');
 987                 // Reasonable default values
 988                 if (ls.empty())
 989                         ls = '(';
 990                 if (rs.empty())
 991                         rs = ')';
 992                 cur.recordUndo();
 993                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 994                 break;
 995         }
 996
 997         case LFUN_MATH_BIGDELIM: {
 998                 docstring const lname  = from_utf8(cmd.getArg(0));
 999                 docstring const ldelim = from_utf8(cmd.getArg(1));
1000                 docstring const rname  = from_utf8(cmd.getArg(2));
1001                 docstring const rdelim = from_utf8(cmd.getArg(3));
1002                 latexkeys const * l = in_word_set(lname);
1003                 bool const have_l = l && l->inset == "big" &&
1004                                     InsetMathBig::isBigInsetDelim(ldelim);
1005                 l = in_word_set(rname);
1006                 bool const have_r = l && l->inset == "big" &&
1007                                     InsetMathBig::isBigInsetDelim(rdelim);
1008                 // We mimic LFUN_MATH_DELIM in case we have an empty left
1009                 // or right delimiter.
1010                 if (have_l || have_r) {
1011                         cur.recordUndo();
1012                         docstring const selection = grabAndEraseSelection(cur);
1013                         selClearOrDel(cur);
1014                         if (have_l)
1015                                 cur.insert(MathAtom(new InsetMathBig(lname,
1016                                                                 ldelim)));
1017                         cur.niceInsert(selection);
1018                         if (have_r)
1019                                 cur.insert(MathAtom(new InsetMathBig(rname,
1020                                                                 rdelim)));
1021                 }
1022                 // Don't call cur.undispatched() if we did nothing, this would
1023                 // lead to infinite recursion via Text::dispatch().
1024                 break;
1025         }
1026
1027         case LFUN_SPACE_INSERT:
1028                 cur.recordUndoSelection();
1029                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
1030                 break;
1031
1032         case LFUN_MATH_SPACE:
1033                 cur.recordUndoSelection();
1034                 if (cmd.argument().empty())
1035                         cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
1036                 else
1037                         cur.insert(MathAtom(new InsetMathSpace(cmd.argument())));
1038                 break;
1039
1040         case LFUN_ERT_INSERT:
1041                 // interpret this as if a backslash was typed
1042                 cur.recordUndo();
1043                 interpretChar(cur, '\\');
1044                 break;
1045
1046         case LFUN_MATH_SUBSCRIPT:
1047                 // interpret this as if a _ was typed
1048                 cur.recordUndoSelection();
1049                 interpretChar(cur, '_');
1050                 break;
1051
1052         case LFUN_MATH_SUPERSCRIPT:
1053                 // interpret this as if a ^ was typed
1054                 cur.recordUndoSelection();
1055                 interpretChar(cur, '^');
1056                 break;
1057
1058         case LFUN_MATH_MACRO_FOLD:
1059         case LFUN_MATH_MACRO_UNFOLD: {
1060                 Cursor it = cur;
1061                 bool fold = cmd.action == LFUN_MATH_MACRO_FOLD;
1062                 bool found = findMacroToFoldUnfold(it, fold);
1063                 if (found) {
1064                         MathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1065                         cur.recordUndoInset();
1066                         if (fold)
1067                                 macro->fold(cur);
1068                         else
1069                                 macro->unfold(cur);
1070                 }
1071                 break;
1072         }
1073
1074         case LFUN_QUOTE_INSERT:
1075                 // interpret this as if a straight " was typed
1076                 cur.recordUndoSelection();
1077                 interpretChar(cur, '\"');
1078                 break;
1079
1080 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1081 // handling such that "self-insert" works on "arbitrary stuff" too, and
1082 // math-insert only handles special math things like "matrix".
1083         case LFUN_MATH_INSERT: {
1084                 cur.recordUndoSelection();
1085                 if (cmd.argument() == "^" || cmd.argument() == "_")
1086                         interpretChar(cur, cmd.argument()[0]);
1087                 else {
1088                         MathData ar;
1089                         asArray(cmd.argument(), ar);
1090                         if (ar.size() == 1 && ar[0]->asNestInset()
1091                                         && ar[0]->asNestInset()->nargs() > 1)
1092                                 handleNest(cur, ar[0]);
1093                         else
1094                                 cur.niceInsert(cmd.argument());
1095                 }
1096                 break;
1097                 }
1098
1099         case LFUN_DIALOG_SHOW_NEW_INSET: {
1100                 docstring const & name = cmd.argument();
1101                 string data;
1102                 if (name == "ref") {
1103                         InsetMathRef tmp(name);
1104                         data = tmp.createDialogStr(to_utf8(name));
1105                 }
1106                 cur.bv().showDialog(to_utf8(name), data);
1107                 break;
1108         }
1109
1110         case LFUN_INSET_INSERT: {
1111                 MathData ar;
1112                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1113                         cur.recordUndoSelection();
1114                         cur.insert(ar);
1115                 } else
1116                         cur.undispatched();
1117                 break;
1118         }
1119         case LFUN_INSET_DISSOLVE:
1120                 if (!asHullInset()) {
1121                         cur.recordUndoInset();
1122                         cur.pullArg();
1123                 }
1124                 break;
1125
1126         default:
1127                 InsetMath::doDispatch(cur, cmd);
1128                 break;
1129         }
1130 }
1131
1132
1133 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1134         // look for macro to open/close, but stay in mathed
1135         for (; !it.empty(); it.pop_back()) {
1136
1137                 // go backward through the current cell
1138                 Inset * inset = it.nextInset();
1139                 while (inset && inset->asInsetMath()) {
1140                         MathMacro * macro = inset->asInsetMath()->asMacro();
1141                         if (macro) {
1142                                 // found the an macro to open/close?
1143                                 if (macro->folded() != fold)
1144                                         return true;
1145
1146                                 // Wrong folding state.
1147                                 // If this was the first we see in this slice, look further left,
1148                                 // otherwise go up.
1149                                 if (inset != it.nextInset())
1150                                         break;
1151                         }
1152
1153                         // go up if this was the left most position
1154                         if (it.pos() == 0)
1155                                 break;
1156
1157                         // go left
1158                         it.pos()--;
1159                         inset = it.nextInset();
1160                 }
1161         }
1162
1163         return false;
1164 }
1165
1166
1167 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1168                 FuncStatus & flag) const
1169 {
1170         // the font related toggles
1171         //string tc = "mathnormal";
1172         bool ret = true;
1173         string const arg = to_utf8(cmd.argument());
1174         switch (cmd.action) {
1175         case LFUN_TABULAR_FEATURE:
1176                 flag.setEnabled(false);
1177                 break;
1178 #if 0
1179         case LFUN_TABULAR_FEATURE:
1180                 // FIXME: check temporarily disabled
1181                 // valign code
1182                 char align = mathcursor::valign();
1183                 if (align == '\0') {
1184                         enable = false;
1185                         break;
1186                 }
1187                 if (cmd.argument().empty()) {
1188                         flag.clear();
1189                         break;
1190                 }
1191                 if (!contains("tcb", cmd.argument()[0])) {
1192                         enable = false;
1193                         break;
1194                 }
1195                 flag.setOnOff(cmd.argument()[0] == align);
1196                 break;
1197 #endif
1198         /// We have to handle them since 1.4 blocks all unhandled actions
1199         case LFUN_FONT_ITAL:
1200         case LFUN_FONT_BOLD:
1201         case LFUN_FONT_BOLDSYMBOL:
1202         case LFUN_FONT_SANS:
1203         case LFUN_FONT_EMPH:
1204         case LFUN_FONT_TYPEWRITER:
1205         case LFUN_FONT_NOUN:
1206         case LFUN_FONT_ROMAN:
1207         case LFUN_FONT_DEFAULT:
1208                 flag.setEnabled(true);
1209                 break;
1210         case LFUN_MATH_MUTATE:
1211                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1212                 flag.setOnOff(false);
1213                 break;
1214
1215         // we just need to be in math mode to enable that
1216         case LFUN_MATH_SIZE:
1217         case LFUN_MATH_SPACE:
1218         case LFUN_MATH_LIMITS:
1219         case LFUN_MATH_EXTERN:
1220                 flag.setEnabled(true);
1221                 break;
1222
1223         case LFUN_FONT_FRAK:
1224                 flag.setEnabled(currentMode() != TEXT_MODE);
1225                 break;
1226
1227         case LFUN_MATH_INSERT: {
1228                 bool const textarg =
1229                         arg == "\\textbf"   || arg == "\\textsf" ||
1230                         arg == "\\textrm"   || arg == "\\textmd" ||
1231                         arg == "\\textit"   || arg == "\\textsc" ||
1232                         arg == "\\textsl"   || arg == "\\textup" ||
1233                         arg == "\\texttt"   || arg == "\\textbb" ||
1234                         arg == "\\textnormal";
1235                 flag.setEnabled(currentMode() != TEXT_MODE || textarg);
1236                 break;
1237         }
1238
1239         case LFUN_MATH_MATRIX:
1240                 flag.setEnabled(currentMode() == MATH_MODE);
1241                 break;
1242
1243         case LFUN_INSET_INSERT: {
1244                 // Don't test createMathInset_fromDialogStr(), since
1245                 // getStatus is not called with a valid reference and the
1246                 // dialog would not be applyable.
1247                 string const name = cmd.getArg(0);
1248                 flag.setEnabled(name == "ref");
1249                 break;
1250         }
1251
1252         case LFUN_MATH_DELIM:
1253         case LFUN_MATH_BIGDELIM:
1254                 // Don't do this with multi-cell selections
1255                 flag.setEnabled(cur.selBegin().idx() == cur.selEnd().idx());
1256                 break;
1257
1258         case LFUN_MATH_MACRO_FOLD:
1259         case LFUN_MATH_MACRO_UNFOLD: {
1260                 Cursor it = cur;
1261                 bool found = findMacroToFoldUnfold(it, cmd.action == LFUN_MATH_MACRO_FOLD);
1262                 flag.setEnabled(found);
1263                 break;
1264         }
1265
1266         case LFUN_SPECIALCHAR_INSERT:
1267                 // FIXME: These would probably make sense in math-text mode
1268                 flag.setEnabled(false);
1269                 break;
1270
1271         case LFUN_INSET_DISSOLVE:
1272                 flag.setEnabled(!asHullInset());
1273                 break;
1274
1275         default:
1276                 ret = false;
1277                 break;
1278         }
1279         return ret;
1280 }
1281
1282
1283 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1284 {
1285         cur.push(*this);
1286         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_RIGHT ||
1287                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1288         cur.idx() = enter_front ? 0 : cur.lastidx();
1289         cur.pos() = enter_front ? 0 : cur.lastpos();
1290         cur.resetAnchor();
1291         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1292 }
1293
1294
1295 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1296 {
1297         int idx_min = 0;
1298         int dist_min = 1000000;
1299         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1300                 int const d = cell(i).dist(cur.bv(), x, y);
1301                 if (d < dist_min) {
1302                         dist_min = d;
1303                         idx_min = i;
1304                 }
1305         }
1306         MathData & ar = cell(idx_min);
1307         cur.push(*this);
1308         cur.idx() = idx_min;
1309         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1310
1311         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1312         if (dist_min == 0) {
1313                 // hit inside cell
1314                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1315                         if (ar[i]->covers(cur.bv(), x, y))
1316                                 return ar[i].nucleus()->editXY(cur, x, y);
1317         }
1318         return this;
1319 }
1320
1321
1322 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1323 {
1324         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1325         BufferView & bv = cur.bv();
1326         bool do_selection = cmd.button() == mouse_button::button1
1327                 && cmd.argument() == "region-select";
1328         bv.mouseSetCursor(cur, do_selection);
1329         if (cmd.button() == mouse_button::button1) {
1330                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1331                 // Update the cursor update flags as needed:
1332                 //
1333                 // Update::Decoration: tells to update the decoration
1334                 //                     (visual box corners that define
1335                 //                     the inset)/
1336                 // Update::FitCursor: adjust the screen to the cursor
1337                 //                    position if needed
1338                 // cur.result().update(): don't overwrite previously set flags.
1339                 cur.updateFlags(Update::Decoration | Update::FitCursor
1340                                 | cur.result().update());
1341         } else if (cmd.button() == mouse_button::button2) {
1342                 if (cap::selection()) {
1343                         // See comment in Text::dispatch why we do this
1344                         cap::copySelectionToStack();
1345                         cmd = FuncRequest(LFUN_PASTE, "0");
1346                         doDispatch(bv.cursor(), cmd);
1347                 } else {
1348                         MathData ar;
1349                         asArray(theSelection().get(), ar);
1350                         bv.cursor().insert(ar);
1351                 }
1352         }
1353 }
1354
1355
1356 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1357 {
1358         // only select with button 1
1359         if (cmd.button() == mouse_button::button1) {
1360                 Cursor & bvcur = cur.bv().cursor();
1361                 if (bvcur.anchor_.hasPart(cur)) {
1362                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1363                         bvcur.setCursor(cur);
1364                         bvcur.setSelection(true);
1365                         //lyxerr << "MOTION " << bvcur << endl;
1366                 } else
1367                         cur.undispatched();
1368         }
1369 }
1370
1371
1372 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1373 {
1374         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1375
1376         if (cmd.button() == mouse_button::button1) {
1377                 if (!cur.selection())
1378                         cur.noUpdate();
1379                 else {
1380                         Cursor & bvcur = cur.bv().cursor();
1381                         bvcur.setSelection(true);
1382                 }
1383                 return;
1384         }
1385
1386         cur.undispatched();
1387 }
1388
1389
1390 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1391 {
1392         //lyxerr << "interpret 2: '" << c << "'" << endl;
1393         docstring save_selection;
1394         if (c == '^' || c == '_')
1395                 save_selection = grabAndEraseSelection(cur);
1396
1397         cur.clearTargetX();
1398
1399         // handle macroMode
1400         if (cur.inMacroMode()) {
1401                 docstring name = cur.macroName();
1402
1403                 /// are we currently typing '#1' or '#2' or...?
1404                 if (name == "\\#") {
1405                         cur.backspace();
1406                         int n = c - '0';
1407                         if (n >= 1 && n <= 9)
1408                                 cur.insert(new MathMacroArgument(n));
1409                         return true;
1410                 }
1411
1412                 // do not finish macro for known * commands
1413                 MathWordList const & mwl = mathedWordList();
1414                 bool star_macro = c == '*'
1415                         && (mwl.find(name.substr(1) + "*") != mwl.end()
1416                             || cur.buffer().getMacro(name.substr(1) + "*", cur, true));
1417                 if (isAlphaASCII(c) || star_macro) {
1418                         cur.activeMacro()->setName(name + docstring(1, c));
1419                         return true;
1420                 }
1421
1422                 // handle 'special char' macros
1423                 if (name == "\\") {
1424                         // remove the '\\'
1425                         if (c == '\\') {
1426                                 cur.backspace();
1427                                 if (currentMode() == InsetMath::TEXT_MODE)
1428                                         cur.niceInsert(createInsetMath("textbackslash"));
1429                                 else
1430                                         cur.niceInsert(createInsetMath("backslash"));
1431                         } else if (c == '{') {
1432                                 cur.backspace();
1433                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1434                         } else if (c == '%') {
1435                                 cur.backspace();
1436                                 cur.niceInsert(MathAtom(new InsetMathComment));
1437                         } else if (c == '#') {
1438                                 LASSERT(cur.activeMacro(), /**/);
1439                                 cur.activeMacro()->setName(name + docstring(1, c));
1440                         } else {
1441                                 cur.backspace();
1442                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1443                         }
1444                         return true;
1445                 }
1446
1447                 // One character big delimiters. The others are handled in
1448                 // interpretString().
1449                 latexkeys const * l = in_word_set(name.substr(1));
1450                 if (name[0] == '\\' && l && l->inset == "big") {
1451                         docstring delim;
1452                         switch (c) {
1453                         case '{':
1454                                 delim = from_ascii("\\{");
1455                                 break;
1456                         case '}':
1457                                 delim = from_ascii("\\}");
1458                                 break;
1459                         default:
1460                                 delim = docstring(1, c);
1461                                 break;
1462                         }
1463                         if (InsetMathBig::isBigInsetDelim(delim)) {
1464                                 // name + delim ared a valid InsetMathBig.
1465                                 // We can't use cur.macroModeClose() because
1466                                 // it does not handle delim.
1467                                 InsetMathUnknown * p = cur.activeMacro();
1468                                 p->finalize();
1469                                 --cur.pos();
1470                                 cur.cell().erase(cur.pos());
1471                                 cur.plainInsert(MathAtom(
1472                                         new InsetMathBig(name.substr(1), delim)));
1473                                 return true;
1474                         }
1475                 }
1476
1477                 // leave macro mode and try again if necessary
1478                 cur.macroModeClose();
1479                 if (c == '{')
1480                         cur.niceInsert(MathAtom(new InsetMathBrace));
1481                 else if (c != ' ')
1482                         interpretChar(cur, c);
1483                 return true;
1484         }
1485
1486         // This is annoying as one has to press <space> far too often.
1487         // Disable it.
1488
1489 #if 0
1490                 // leave autocorrect mode if necessary
1491                 if (autocorrect() && c == ' ') {
1492                         autocorrect() = false;
1493                         return true;
1494                 }
1495 #endif
1496
1497         // just clear selection on pressing the space bar
1498         if (cur.selection() && c == ' ') {
1499                 cur.setSelection(false);
1500                 return true;
1501         }
1502
1503         if (c == '\\') {
1504                 //lyxerr << "starting with macro" << endl;
1505                 bool reduced = cap::reduceSelectionToOneCell(cur);
1506                 if (reduced || !cur.selection()) {
1507                         docstring const safe = cap::grabAndEraseSelection(cur);
1508                         cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1509                 }
1510                 return true;
1511         }
1512
1513         selClearOrDel(cur);
1514
1515         if (c == '\n') {
1516                 if (currentMode() == InsetMath::TEXT_MODE)
1517                         cur.insert(c);
1518                 return true;
1519         }
1520
1521         if (c == ' ') {
1522                 if (currentMode() == InsetMath::TEXT_MODE) {
1523                         // insert spaces in text mode,
1524                         // but suppress direct insertion of two spaces in a row
1525                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1526                         // it is better than nothing...
1527                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1528                                 cur.insert(c);
1529                                 // FIXME: we have to enable full redraw here because of the
1530                                 // visual box corners that define the inset. If we know for
1531                                 // sure that we stay within the same cell we can optimize for
1532                                 // that using:
1533                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1534                         }
1535                         return true;
1536                 }
1537                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1538                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1539                         // FIXME: we have to enable full redraw here because of the
1540                         // visual box corners that define the inset. If we know for
1541                         // sure that we stay within the same cell we can optimize for
1542                         // that using:
1543                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1544                         return true;
1545                 }
1546
1547                 if (cur.popForward()) {
1548                         // FIXME: we have to enable full redraw here because of the
1549                         // visual box corners that define the inset. If we know for
1550                         // sure that we stay within the same cell we can optimize for
1551                         // that using:
1552                         //cur.updateFlags(Update::FitCursor);
1553                         return true;
1554                 }
1555
1556                 // if we are at the very end, leave the formula
1557                 return cur.pos() != cur.lastpos();
1558         }
1559
1560         // These shouldn't work in text mode:
1561         if (currentMode() != InsetMath::TEXT_MODE) {
1562                 if (c == '_') {
1563                         script(cur, false, save_selection);
1564                         return true;
1565                 }
1566                 if (c == '^') {
1567                         script(cur, true, save_selection);
1568                         return true;
1569                 }
1570                 if (c == '~') {
1571                         cur.niceInsert(createInsetMath("sim"));
1572                         return true;
1573                 }
1574         }
1575
1576         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1577             c == '%' || c == '_' || c == '^') {
1578                 cur.niceInsert(createInsetMath(docstring(1, c)));
1579                 return true;
1580         }
1581
1582
1583         // try auto-correction
1584         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1585         //      return true;
1586
1587         // no special circumstances, so insert the character without any fuss
1588         cur.insert(c);
1589         cur.autocorrect() = true;
1590         return true;
1591 }
1592
1593
1594 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1595 {
1596         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1597         // possible
1598         if (!cur.empty() && cur.pos() > 0 &&
1599             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1600                 if (InsetMathBig::isBigInsetDelim(str)) {
1601                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1602                         if (prev[0] == '\\') {
1603                                 prev = prev.substr(1);
1604                                 latexkeys const * l = in_word_set(prev);
1605                                 if (l && l->inset == "big") {
1606                                         cur.cell()[cur.pos() - 1] =
1607                                                 MathAtom(new InsetMathBig(prev, str));
1608                                         return true;
1609                                 }
1610                         }
1611                 }
1612         }
1613         return false;
1614 }
1615
1616
1617 bool InsetMathNest::script(Cursor & cur, bool up)
1618 {
1619         return script(cur, up, docstring());
1620 }
1621
1622
1623 bool InsetMathNest::script(Cursor & cur, bool up,
1624                 docstring const & save_selection)
1625 {
1626         // Hack to get \^ and \_ working
1627         //lyxerr << "handling script: up: " << up << endl;
1628         if (cur.inMacroMode() && cur.macroName() == "\\") {
1629                 if (up)
1630                         cur.niceInsert(createInsetMath("mathcircumflex"));
1631                 else
1632                         interpretChar(cur, '_');
1633                 return true;
1634         }
1635
1636         cur.macroModeClose();
1637         if (asScriptInset() && cur.idx() == 0) {
1638                 // we are in a nucleus of a script inset, move to _our_ script
1639                 InsetMathScript * inset = asScriptInset();
1640                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1641                 inset->ensure(up);
1642                 cur.idx() = inset->idxOfScript(up);
1643                 cur.pos() = 0;
1644         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1645                 --cur.pos();
1646                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1647                 cur.push(*inset);
1648                 inset->ensure(up);
1649                 cur.idx() = inset->idxOfScript(up);
1650                 cur.pos() = cur.lastpos();
1651         } else {
1652                 // convert the thing to our left to a scriptinset or create a new
1653                 // one if in the very first position of the array
1654                 if (cur.pos() == 0) {
1655                         //lyxerr << "new scriptinset" << endl;
1656                         cur.insert(new InsetMathScript(up));
1657                 } else {
1658                         //lyxerr << "converting prev atom " << endl;
1659                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1660                 }
1661                 --cur.pos();
1662                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1663                 // See comment in MathParser.cpp for special handling of {}-bases
1664
1665                 cur.push(*inset);
1666                 cur.idx() = 1;
1667                 cur.pos() = 0;
1668         }
1669         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1670         cur.niceInsert(save_selection);
1671         cur.resetAnchor();
1672         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1673         return true;
1674 }
1675
1676
1677 bool InsetMathNest::completionSupported(Cursor const & cur) const
1678 {
1679         return cur.inMacroMode();
1680 }
1681
1682
1683 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
1684 {
1685         return cur.inMacroMode();
1686 }
1687
1688
1689 bool InsetMathNest::automaticInlineCompletion() const
1690 {
1691         return lyxrc.completion_inline_math;
1692 }
1693
1694
1695 bool InsetMathNest::automaticPopupCompletion() const
1696 {
1697         return lyxrc.completion_popup_math;
1698 }
1699
1700
1701 CompletionList const *
1702 InsetMathNest::createCompletionList(Cursor const & cur) const
1703 {
1704         if (!cur.inMacroMode())
1705                 return 0;
1706
1707         return new MathCompletionList(cur);
1708 }
1709
1710
1711 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
1712 {
1713         if (!cur.inMacroMode())
1714                 return docstring();
1715
1716         return cur.activeMacro()->name();
1717 }
1718
1719
1720 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
1721                                      bool finished)
1722 {
1723         if (!cur.inMacroMode())
1724                 return false;
1725
1726         // append completion to active macro
1727         InsetMathUnknown * inset = cur.activeMacro();
1728         inset->setName(inset->name() + s);
1729
1730         // finish macro
1731         if (finished) {
1732 #if 0
1733                 // FIXME: this creates duplicates in the completion popup
1734                 // which looks ugly. Moreover the changes the list lengths
1735                 // which seems to
1736                 confuse the popup as well.
1737                 MathCompletionList::addToFavorites(inset->name());
1738 #endif
1739                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
1740         }
1741
1742         return true;
1743 }
1744
1745
1746 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
1747                                         Dimension & dim) const
1748 {
1749         Inset const * inset = cur.activeMacro();
1750         if (!inset)
1751                 return;
1752
1753         // get inset dimensions
1754         dim = cur.bv().coordCache().insets().dim(inset);
1755         // FIXME: these 3 are no accurate, but should depend on the font.
1756         // Now the popup jumps down if you enter a char with descent > 0.
1757         dim.des += 3;
1758         dim.asc += 3;
1759
1760         // and position
1761         Point xy
1762         = cur.bv().coordCache().insets().xy(inset);
1763         x = xy.x_;
1764         y = xy.y_;
1765 }
1766
1767
1768 bool InsetMathNest::cursorMathForward(Cursor & cur)
1769 {
1770         if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
1771                 cur.pushBackward(*cur.nextAtom().nucleus());
1772                 cur.inset().idxFirst(cur);
1773                 return true;
1774         }
1775         if (cur.posForward() || idxForward(cur))
1776                 return true;
1777         // try to pop forwards --- but don't pop out of math! leave that to
1778         // the FINISH lfuns
1779         int s = cur.depth() - 2;
1780         if (s >= 0 && cur[s].inset().asInsetMath())
1781                 return cur.popForward();
1782         return false;
1783 }
1784
1785
1786 bool InsetMathNest::cursorMathBackward(Cursor & cur)
1787 {
1788         if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
1789                 cur.posBackward();
1790                 cur.push(*cur.nextAtom().nucleus());
1791                 cur.inset().idxLast(cur);
1792                 return true;
1793         }
1794         if (cur.posBackward() || idxBackward(cur))
1795                 return true;
1796         // try to pop backwards --- but don't pop out of math! leave that to
1797         // the FINISH lfuns
1798         int s = cur.depth() - 2;
1799         if (s >= 0 && cur[s].inset().asInsetMath())
1800                 return cur.popBackward();
1801         return false;
1802 }
1803
1804
1805 ////////////////////////////////////////////////////////////////////
1806
1807 MathCompletionList::MathCompletionList(Cursor const & cur)
1808 {
1809         // fill it with macros from the buffer
1810         MacroNameSet macros;
1811         cur.buffer().listMacroNames(macros);
1812         MacroNameSet::const_iterator it;
1813         for (it = macros.begin(); it != macros.end(); ++it) {
1814                 if (cur.buffer().getMacro(*it, cur, false))
1815                         locals.push_back("\\" + *it);
1816         }
1817         sort(locals.begin(), locals.end());
1818
1819         if (globals.size() > 0)
1820                 return;
1821
1822         // fill in global macros
1823         macros.clear();
1824         MacroTable::globalMacros().getMacroNames(macros);
1825         //lyxerr << "Globals completion macros: ";
1826         for (it = macros.begin(); it != macros.end(); ++it) {
1827                 //lyxerr << "\\" + *it << " ";
1828                 globals.push_back("\\" + *it);
1829         }
1830         //lyxerr << std::endl;
1831
1832         // fill in global commands
1833         globals.push_back(from_ascii("\\boxed"));
1834         globals.push_back(from_ascii("\\fbox"));
1835         globals.push_back(from_ascii("\\framebox"));
1836         globals.push_back(from_ascii("\\makebox"));
1837         globals.push_back(from_ascii("\\kern"));
1838         globals.push_back(from_ascii("\\xrightarrow"));
1839         globals.push_back(from_ascii("\\xleftarrow"));
1840         globals.push_back(from_ascii("\\split"));
1841         globals.push_back(from_ascii("\\gathered"));
1842         globals.push_back(from_ascii("\\aligned"));
1843         globals.push_back(from_ascii("\\alignedat"));
1844         globals.push_back(from_ascii("\\cases"));
1845         globals.push_back(from_ascii("\\substack"));
1846         globals.push_back(from_ascii("\\xymatrix"));
1847         globals.push_back(from_ascii("\\subarray"));
1848         globals.push_back(from_ascii("\\array"));
1849         globals.push_back(from_ascii("\\sqrt"));
1850         globals.push_back(from_ascii("\\root"));
1851         globals.push_back(from_ascii("\\tabular"));
1852         globals.push_back(from_ascii("\\stackrel"));
1853         globals.push_back(from_ascii("\\binom"));
1854         globals.push_back(from_ascii("\\choose"));
1855         globals.push_back(from_ascii("\\brace"));
1856         globals.push_back(from_ascii("\\brack"));
1857         globals.push_back(from_ascii("\\frac"));
1858         globals.push_back(from_ascii("\\over"));
1859         globals.push_back(from_ascii("\\nicefrac"));
1860         globals.push_back(from_ascii("\\unitfrac"));
1861         globals.push_back(from_ascii("\\unitfracthree"));
1862         globals.push_back(from_ascii("\\unitone"));
1863         globals.push_back(from_ascii("\\unittwo"));
1864         globals.push_back(from_ascii("\\infer"));
1865         globals.push_back(from_ascii("\\atop"));
1866         globals.push_back(from_ascii("\\lefteqn"));
1867         globals.push_back(from_ascii("\\boldsymbol"));
1868         globals.push_back(from_ascii("\\bm"));
1869         globals.push_back(from_ascii("\\color"));
1870         globals.push_back(from_ascii("\\normalcolor"));
1871         globals.push_back(from_ascii("\\textcolor"));
1872         globals.push_back(from_ascii("\\dfrac"));
1873         globals.push_back(from_ascii("\\tfrac"));
1874         globals.push_back(from_ascii("\\dbinom"));
1875         globals.push_back(from_ascii("\\tbinom"));
1876         globals.push_back(from_ascii("\\hphantom"));
1877         globals.push_back(from_ascii("\\phantom"));
1878         globals.push_back(from_ascii("\\vphantom"));
1879         MathWordList const & words = mathedWordList();
1880         MathWordList::const_iterator it2;
1881         //lyxerr << "Globals completion commands: ";
1882         for (it2 = words.begin(); it2 != words.end(); ++it2) {
1883                 globals.push_back("\\" + (*it2).first);
1884                 //lyxerr << "\\" + (*it2).first << " ";
1885         }
1886         //lyxerr << std::endl;
1887         sort(globals.begin(), globals.end());
1888 }
1889
1890
1891 MathCompletionList::~MathCompletionList()
1892 {
1893 }
1894
1895
1896 size_type MathCompletionList::size() const
1897 {
1898         return locals.size() + globals.size();
1899 }
1900
1901
1902 docstring const & MathCompletionList::data(size_t idx) const
1903 {
1904         size_t lsize = locals.size();
1905         if (idx >= lsize)
1906                 return globals[idx - lsize];
1907         else
1908                 return locals[idx];
1909 }
1910
1911
1912 std::string MathCompletionList::icon(size_t idx) const
1913 {
1914         // get the latex command
1915         docstring cmd;
1916         size_t lsize = locals.size();
1917         if (idx >= lsize)
1918                 cmd = globals[idx - lsize];
1919         else
1920                 cmd = locals[idx];
1921
1922         // get the icon resource name by stripping the backslash
1923         return "images/math/" + to_utf8(cmd.substr(1)) + ".png";
1924 }
1925
1926 std::vector<docstring> MathCompletionList::globals;
1927
1928 } // namespace lyx