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