src/mathed/InsetMathNest.cpp

   1 /**
   2  * \file InsetMathNest.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathNest.h"
  14
  15 #include "InsetMathArray.h"
  16 #include "InsetMathBig.h"
  17 #include "InsetMathBox.h"
  18 #include "InsetMathBrace.h"
  19 #include "InsetMathColor.h"
  20 #include "InsetMathComment.h"
  21 #include "InsetMathDelim.h"
  22 #include "InsetMathHull.h"
  23 #include "InsetMathRef.h"
  24 #include "InsetMathScript.h"
  25 #include "InsetMathSpace.h"
  26 #include "InsetMathSymbol.h"
  27 #include "InsetMathUnknown.h"
  28 #include "MathData.h"
  29 #include "MathFactory.h"
  30 #include "MathMacro.h"
  31 #include "MathMacroArgument.h"
  32 #include "MathParser.h"
  33 #include "MathStream.h"
  34 #include "MathSupport.h"
  35
  36 #include "Bidi.h"
  37 #include "Buffer.h"
  38 #include "BufferView.h"
  39 #include "CoordCache.h"
  40 #include "Cursor.h"
  41 #include "CutAndPaste.h"
  42 #include "DispatchResult.h"
  43 #include "FuncRequest.h"
  44 #include "FuncStatus.h"
  45 #include "LyXFunc.h"
  46 #include "LyXRC.h"
  47 #include "OutputParams.h"
  48 #include "Text.h"
  49
  50 #include "frontends/Clipboard.h"
  51 #include "frontends/Painter.h"
  52 #include "frontends/Selection.h"
  53
  54 #include "support/debug.h"
  55 #include "support/gettext.h"
  56 #include "support/lstrings.h"
  57 #include "support/textutils.h"
  58 #include "support/docstream.h"
  59
  60 #include <algorithm>
  61 #include <deque>
  62 #include <sstream>
  63
  64 using namespace std;
  65 using namespace lyx::support;
  66
  67 namespace lyx {
  68
  69 using cap::copySelection;
  70 using cap::grabAndEraseSelection;
  71 using cap::cutSelection;
  72 using cap::replaceSelection;
  73 using cap::selClearOrDel;
  74
  75
  76 InsetMathNest::InsetMathNest(idx_type nargs)
  77         : cells_(nargs), lock_(false), mouse_hover_(false)
  78 {}
  79
  80
  81 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  82         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_),
  83           mouse_hover_(false)
  84 {}
  85
  86
  87 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
  88 {
  89         cells_ = inset.cells_;
  90         lock_ = inset.lock_;
  91         mouse_hover_ = false;
  92         InsetMath::operator=(inset);
  93         return *this;
  94 }
  95
  96
  97 InsetMath::idx_type InsetMathNest::nargs() const
  98 {
  99         return cells_.size();
 100 }
 101
 102
 103 void InsetMathNest::cursorPos(BufferView const & bv,
 104                 CursorSlice const & sl, bool /*boundary*/,
 105                 int & x, int & y) const
 106 {
 107 // FIXME: This is a hack. Ideally, the coord cache should not store
 108 // absolute positions, but relative ones. This would mean to call
 109 // setXY() not in MathData::draw(), but in the parent insets' draw()
 110 // with the correctly adjusted x,y values. But this means that we'd have
 111 // to touch all (math)inset's draw() methods. Right now, we'll store
 112 // absolute value, and make them here relative, only to make them
 113 // absolute again when actually drawing the cursor. What a mess.
 114         BOOST_ASSERT(&sl.inset() == this);
 115         MathData const & ar = sl.cell();
 116         CoordCache const & coord_cache = bv.coordCache();
 117         if (!coord_cache.getArrays().has(&ar)) {
 118                 // this can (semi-)legally happen if we just created this cell
 119                 // and it never has been drawn before. So don't ASSERT.
 120                 //lyxerr << "no cached data for array " << &ar << endl;
 121                 x = 0;
 122                 y = 0;
 123                 return;
 124         }
 125         Point const pt = coord_cache.getArrays().xy(&ar);
 126         if (!coord_cache.getInsets().has(this)) {
 127                 // same as above
 128                 //lyxerr << "no cached data for inset " << this << endl;
 129                 x = 0;
 130                 y = 0;
 131                 return;
 132         }
 133         Point const pt2 = coord_cache.getInsets().xy(this);
 134         //lyxerr << "retrieving position cache for MathData "
 135         //      << pt.x_ << ' ' << pt.y_ << endl;
 136         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 137         y = pt.y_ - pt2.y_;
 138 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 139 //              << " asc: " << ascent() << "  des: " << descent()
 140 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 141         // move cursor visually into empty cells ("blue rectangles");
 142         if (ar.empty())
 143                 x += 2;
 144 }
 145
 146
 147 void InsetMathNest::metrics(MetricsInfo const & mi) const
 148 {
 149         MetricsInfo m = mi;
 150         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 151                 Dimension dim;
 152                 cell(i).metrics(m, dim);
 153         }
 154 }
 155
 156
 157 bool InsetMathNest::idxNext(Cursor & cur) const
 158 {
 159         BOOST_ASSERT(&cur.inset() == this);
 160         if (cur.idx() == cur.lastidx())
 161                 return false;
 162         ++cur.idx();
 163         cur.pos() = 0;
 164         return true;
 165 }
 166
 167
 168 bool InsetMathNest::idxForward(Cursor & cur) const
 169 {
 170         return idxNext(cur);
 171 }
 172
 173
 174 bool InsetMathNest::idxPrev(Cursor & cur) const
 175 {
 176         BOOST_ASSERT(&cur.inset() == this);
 177         if (cur.idx() == 0)
 178                 return false;
 179         --cur.idx();
 180         cur.pos() = cur.lastpos();
 181         return true;
 182 }
 183
 184
 185 bool InsetMathNest::idxBackward(Cursor & cur) const
 186 {
 187         return idxPrev(cur);
 188 }
 189
 190
 191 bool InsetMathNest::idxFirst(Cursor & cur) const
 192 {
 193         BOOST_ASSERT(&cur.inset() == this);
 194         if (nargs() == 0)
 195                 return false;
 196         cur.idx() = 0;
 197         cur.pos() = 0;
 198         return true;
 199 }
 200
 201
 202 bool InsetMathNest::idxLast(Cursor & cur) const
 203 {
 204         BOOST_ASSERT(&cur.inset() == this);
 205         if (nargs() == 0)
 206                 return false;
 207         cur.idx() = cur.lastidx();
 208         cur.pos() = cur.lastpos();
 209         return true;
 210 }
 211
 212
 213 void InsetMathNest::dump() const
 214 {
 215         odocstringstream oss;
 216         WriteStream os(oss);
 217         os << "---------------------------------------------\n";
 218         write(os);
 219         os << "\n";
 220         for (idx_type i = 0, n = nargs(); i != n; ++i)
 221                 os << cell(i) << "\n";
 222         os << "---------------------------------------------\n";
 223         lyxerr << to_utf8(oss.str());
 224 }
 225
 226
 227 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 228 {
 229 #if 0
 230         if (lock_)
 231                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 232                                         Color_mathlockbg);
 233 #endif
 234         setPosCache(pi, x, y);
 235 }
 236
 237
 238 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 239 {
 240         BufferView & bv = *pi.base.bv;
 241         // this should use the x/y values given, not the cached values
 242         Cursor & cur = bv.cursor();
 243         if (!cur.selection())
 244                 return;
 245         if (&cur.inset() != this)
 246                 return;
 247
 248         // FIXME: hack to get position cache warm
 249         bool const original_drawing_state = pi.pain.isDrawingEnabled();
 250         pi.pain.setDrawingEnabled(false);
 251         draw(pi, x, y);
 252         pi.pain.setDrawingEnabled(original_drawing_state);
 253
 254         CursorSlice s1 = cur.selBegin();
 255         CursorSlice s2 = cur.selEnd();
 256
 257         //lyxerr << "InsetMathNest::drawing selection: "
 258         //      << " s1: " << s1 << " s2: " << s2 << endl;
 259         if (s1.idx() == s2.idx()) {
 260                 MathData const & c = cell(s1.idx());
 261                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 262                 int x1 = g.pos.x_ + c.pos2x(pi.base.bv, s1.pos());
 263                 int y1 = g.pos.y_ - g.dim.ascent();
 264                 int x2 = g.pos.x_ + c.pos2x(pi.base.bv, s2.pos());
 265                 int y2 = g.pos.y_ + g.dim.descent();
 266                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 267         //lyxerr << "InsetMathNest::drawing selection 3: "
 268         //      << " x1: " << x1 << " x2: " << x2
 269         //      << " y1: " << y1 << " y2: " << y2 << endl;
 270         } else {
 271                 for (idx_type i = 0; i < nargs(); ++i) {
 272                         if (idxBetween(i, s1.idx(), s2.idx())) {
 273                                 MathData const & c = cell(i);
 274                                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 275                                 int x1 = g.pos.x_;
 276                                 int y1 = g.pos.y_ - g.dim.ascent();
 277                                 int x2 = g.pos.x_ + g.dim.width();
 278                                 int y2 = g.pos.y_ + g.dim.descent();
 279                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 280                         }
 281                 }
 282         }
 283 }
 284
 285
 286 void InsetMathNest::validate(LaTeXFeatures & features) const
 287 {
 288         for (idx_type i = 0; i < nargs(); ++i)
 289                 cell(i).validate(features);
 290 }
 291
 292
 293 void InsetMathNest::replace(ReplaceData & rep)
 294 {
 295         for (idx_type i = 0; i < nargs(); ++i)
 296                 cell(i).replace(rep);
 297 }
 298
 299
 300 bool InsetMathNest::contains(MathData const & ar) const
 301 {
 302         for (idx_type i = 0; i < nargs(); ++i)
 303                 if (cell(i).contains(ar))
 304                         return true;
 305         return false;
 306 }
 307
 308
 309 bool InsetMathNest::lock() const
 310 {
 311         return lock_;
 312 }
 313
 314
 315 void InsetMathNest::lock(bool l)
 316 {
 317         lock_ = l;
 318 }
 319
 320
 321 bool InsetMathNest::isActive() const
 322 {
 323         return nargs() > 0;
 324 }
 325
 326
 327 MathData InsetMathNest::glue() const
 328 {
 329         MathData ar;
 330         for (size_t i = 0; i < nargs(); ++i)
 331                 ar.append(cell(i));
 332         return ar;
 333 }
 334
 335
 336 void InsetMathNest::write(WriteStream & os) const
 337 {
 338         os << '\\' << name().c_str();
 339         for (size_t i = 0; i < nargs(); ++i)
 340                 os << '{' << cell(i) << '}';
 341         if (nargs() == 0)
 342                 os.pendingSpace(true);
 343         if (lock_ && !os.latex()) {
 344                 os << "\\lyxlock";
 345                 os.pendingSpace(true);
 346         }
 347 }
 348
 349
 350 void InsetMathNest::normalize(NormalStream & os) const
 351 {
 352         os << '[' << name().c_str();
 353         for (size_t i = 0; i < nargs(); ++i)
 354                 os << ' ' << cell(i);
 355         os << ']';
 356 }
 357
 358
 359 int InsetMathNest::latex(Buffer const &, odocstream & os,
 360                         OutputParams const & runparams) const
 361 {
 362         WriteStream wi(os, runparams.moving_arg, true);
 363         write(wi);
 364         return wi.line();
 365 }
 366
 367
 368 bool InsetMathNest::setMouseHover(bool mouse_hover)
 369 {
 370         mouse_hover_ = mouse_hover;
 371         return true;
 372 }
 373
 374
 375 bool InsetMathNest::notifyCursorLeaves(Cursor & /*cur*/)
 376 {
 377         // FIXME: look here
 378 #if 0
 379         MathData & ar = cur.cell();
 380         // remove base-only "scripts"
 381         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 382                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 383                 if (p && p->nargs() == 1) {
 384                         MathData ar = p->nuc();
 385                         erase(i);
 386                         insert(i, ar);
 387                         cur.adjust(i, ar.size() - 1);
 388                 }
 389         }
 390
 391         // glue adjacent font insets of the same kind
 392         for (pos_type i = 0; i + 1 < size(); ++i) {
 393                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 394                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 395                 if (p && q && p->name() == q->name()) {
 396                         p->cell(0).append(q->cell(0));
 397                         erase(i + 1);
 398                         cur.adjust(i, -1);
 399                 }
 400         }
 401 #endif
 402         return false;
 403 }
 404
 405
 406 void InsetMathNest::handleFont
 407         (Cursor & cur, docstring const & arg, char const * const font)
 408 {
 409         handleFont(cur, arg, from_ascii(font));
 410 }
 411
 412
 413 void InsetMathNest::handleFont
 414         (Cursor & cur, docstring const & arg, docstring const & font)
 415 {
 416         // this whole function is a hack and won't work for incremental font
 417         // changes...
 418
 419         if (cur.inset().asInsetMath()->name() == font) {
 420                 cur.recordUndoInset();
 421                 cur.handleFont(to_utf8(font));
 422         } else {
 423                 cur.recordUndo();
 424                 cur.handleNest(createInsetMath(font));
 425                 cur.insert(arg);
 426         }
 427 }
 428
 429
 430 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 431 {
 432         cur.recordUndo();
 433         Font font;
 434         bool b;
 435         font.fromString(to_utf8(arg), b);
 436         if (font.fontInfo().color() != Color_inherit) {
 437                 MathAtom at = MathAtom(new InsetMathColor(true, font.fontInfo().color()));
 438                 cur.handleNest(at, 0);
 439         }
 440 }
 441
 442
 443 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 444 {
 445         //lyxerr << "InsetMathNest: request: " << cmd << endl;
 446         //CursorSlice sl = cur.current();
 447
 448         switch (cmd.action) {
 449
 450         case LFUN_PASTE: {
 451                 cur.recordUndo();
 452                 cur.message(_("Paste"));
 453                 replaceSelection(cur);
 454                 docstring topaste;
 455                 if (cmd.argument().empty() && !theClipboard().isInternal())
 456                         topaste = theClipboard().getAsText();
 457                 else {
 458                         size_t n = 0;
 459                         idocstringstream is(cmd.argument());
 460                         is >> n;
 461                         topaste = cap::getSelection(cur.buffer(), n);
 462                 }
 463                 cur.niceInsert(topaste);
 464                 cur.clearSelection(); // bug 393
 465                 cur.finishUndo();
 466                 break;
 467         }
 468
 469         case LFUN_CUT:
 470                 cur.recordUndo();
 471                 cutSelection(cur, true, true);
 472                 cur.message(_("Cut"));
 473                 // Prevent stale position >= size crash
 474                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 475                 cur.normalize();
 476                 break;
 477
 478         case LFUN_COPY:
 479                 copySelection(cur);
 480                 cur.message(_("Copy"));
 481                 break;
 482
 483         case LFUN_MOUSE_PRESS:
 484                 lfunMousePress(cur, cmd);
 485                 break;
 486
 487         case LFUN_MOUSE_MOTION:
 488                 lfunMouseMotion(cur, cmd);
 489                 break;
 490
 491         case LFUN_MOUSE_RELEASE:
 492                 lfunMouseRelease(cur, cmd);
 493                 break;
 494
 495         case LFUN_FINISHED_LEFT: // in math, left is backwards
 496         case LFUN_FINISHED_BACKWARD:
 497                 cur.bv().cursor() = cur;
 498                 break;
 499
 500         case LFUN_FINISHED_RIGHT: // in math, right is forward
 501         case LFUN_FINISHED_FORWARD:
 502                 ++cur.pos();
 503                 cur.bv().cursor() = cur;
 504                 break;
 505
 506         case LFUN_CHAR_RIGHT:
 507         case LFUN_CHAR_LEFT:
 508         case LFUN_CHAR_BACKWARD:
 509         case LFUN_CHAR_FORWARD:
 510                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 511         case LFUN_CHAR_RIGHT_SELECT:
 512         case LFUN_CHAR_LEFT_SELECT:
 513         case LFUN_CHAR_BACKWARD_SELECT:
 514         case LFUN_CHAR_FORWARD_SELECT: {
 515                 // are we in a selection?
 516                 bool select = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 517                                            || cmd.action == LFUN_CHAR_LEFT_SELECT
 518                                            || cmd.action == LFUN_CHAR_BACKWARD_SELECT
 519                                            || cmd.action == LFUN_CHAR_FORWARD_SELECT);
 520                 // are we moving forward or backwards?
 521                 // If the command was RIGHT or LEFT, then whether we're moving forward
 522                 // or backwards depends on the cursor movement mode (logical or visual):
 523                 //  * in visual mode, since math is always LTR, right -> forward,
 524                 //    left -> backwards
 525                 //  * in logical mode, the mapping is determined by the
 526                 //    reverseDirectionNeeded() function
 527
 528                 bool forward;
 529                 kb_action finish_lfun;
 530
 531                 if (cmd.action == LFUN_CHAR_FORWARD
 532                                 || cmd.action == LFUN_CHAR_FORWARD_SELECT) {
 533                         forward = true;
 534                         finish_lfun = LFUN_FINISHED_FORWARD;
 535                 }
 536                 else if (cmd.action == LFUN_CHAR_BACKWARD
 537                                 || cmd.action == LFUN_CHAR_BACKWARD_SELECT) {
 538                         forward = false;
 539                         finish_lfun = LFUN_FINISHED_BACKWARD;
 540                 }
 541                 else {
 542                         bool right = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 543                                                   || cmd.action == LFUN_CHAR_RIGHT);
 544                         if (lyxrc.visual_cursor || !reverseDirectionNeeded(cur))
 545                                 forward = right;
 546                         else
 547                                 forward = !right;
 548
 549                         if (right)
 550                                 finish_lfun = LFUN_FINISHED_RIGHT;
 551                         else
 552                                 finish_lfun = LFUN_FINISHED_LEFT;
 553                 }
 554                 // Now that we know exactly what we want to do, let's do it!
 555                 cur.selHandle(select);
 556                 cur.autocorrect() = false;
 557                 cur.clearTargetX();
 558                 cur.macroModeClose();
 559                 // try moving forward or backwards as necessary...
 560                 if (!(forward ? cursorMathForward(cur) : cursorMathBackward(cur))) {
 561                         // ... and if movement failed, then finish forward or backwards
 562                         // as necessary
 563                         cmd = FuncRequest(finish_lfun);
 564                         cur.undispatched();
 565                 }
 566                 break;
 567         }
 568
 569         case LFUN_DOWN:
 570         case LFUN_UP:
 571                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 572         case LFUN_DOWN_SELECT:
 573         case LFUN_UP_SELECT: {
 574                 // close active macro
 575                 if (cur.inMacroMode()) {
 576                         cur.macroModeClose();
 577                         break;
 578                 }
 579
 580                 // stop/start the selection
 581                 bool select = cmd.action == LFUN_DOWN_SELECT ||
 582                         cmd.action == LFUN_UP_SELECT;
 583                 cur.selHandle(select);
 584
 585                 // go up/down
 586                 bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
 587                 bool successful = cur.upDownInMath(up);
 588                 if (successful) {
 589                         // notify left insets and give them chance to set update flags
 590                         lyx::notifyCursorLeaves(cur.beforeDispatchCursor(), cur);
 591                         cur.fixIfBroken();
 592                         break;
 593                 }
 594
 595                 if (cur.fixIfBroken())
 596                         // FIXME: Something bad happened. We pass the corrected Cursor
 597                         // instead of letting things go worse.
 598                         break;
 599
 600                 // We did not manage to move the cursor.
 601                 cur.undispatched();
 602                 break;
 603         }
 604
 605         case LFUN_MOUSE_DOUBLE:
 606         case LFUN_MOUSE_TRIPLE:
 607         case LFUN_WORD_SELECT:
 608                 cur.pos() = 0;
 609                 cur.idx() = 0;
 610                 cur.resetAnchor();
 611                 cur.selection() = true;
 612                 cur.pos() = cur.lastpos();
 613                 cur.idx() = cur.lastidx();
 614                 break;
 615
 616         case LFUN_PARAGRAPH_UP:
 617         case LFUN_PARAGRAPH_DOWN:
 618                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 619         case LFUN_PARAGRAPH_UP_SELECT:
 620         case LFUN_PARAGRAPH_DOWN_SELECT:
 621                 break;
 622
 623         case LFUN_LINE_BEGIN:
 624         case LFUN_WORD_BACKWARD:
 625         case LFUN_WORD_LEFT:
 626                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 627         case LFUN_LINE_BEGIN_SELECT:
 628         case LFUN_WORD_BACKWARD_SELECT:
 629         case LFUN_WORD_LEFT_SELECT:
 630                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 631                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
 632                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 633                 cur.macroModeClose();
 634                 if (cur.pos() != 0) {
 635                         cur.pos() = 0;
 636                 } else if (cur.col() != 0) {
 637                         cur.idx() -= cur.col();
 638                         cur.pos() = 0;
 639                 } else if (cur.idx() != 0) {
 640                         cur.idx() = 0;
 641                         cur.pos() = 0;
 642                 } else {
 643                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 644                         cur.undispatched();
 645                 }
 646                 break;
 647
 648         case LFUN_WORD_FORWARD:
 649         case LFUN_WORD_RIGHT:
 650         case LFUN_LINE_END:
 651                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 652         case LFUN_WORD_FORWARD_SELECT:
 653         case LFUN_WORD_RIGHT_SELECT:
 654         case LFUN_LINE_END_SELECT:
 655                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 656                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
 657                                 cmd.action == LFUN_LINE_END_SELECT);
 658                 cur.macroModeClose();
 659                 cur.clearTargetX();
 660                 if (cur.pos() != cur.lastpos()) {
 661                         cur.pos() = cur.lastpos();
 662                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 663                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 664                         cur.pos() = cur.lastpos();
 665                 } else if (cur.idx() != cur.lastidx()) {
 666                         cur.idx() = cur.lastidx();
 667                         cur.pos() = cur.lastpos();
 668                 } else {
 669                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 670                         cur.undispatched();
 671                 }
 672                 break;
 673
 674         case LFUN_SCREEN_UP_SELECT:
 675                 cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 676                 cur.undispatched();
 677                 break;
 678
 679         case LFUN_SCREEN_DOWN_SELECT:
 680                 cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 681                 cur.undispatched();
 682                 break;
 683
 684         case LFUN_CELL_FORWARD:
 685                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 686                 cur.inset().idxNext(cur);
 687                 break;
 688
 689         case LFUN_CELL_BACKWARD:
 690                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 691                 cur.inset().idxPrev(cur);
 692                 break;
 693
 694         case LFUN_WORD_DELETE_BACKWARD:
 695         case LFUN_CHAR_DELETE_BACKWARD:
 696                 if (cur.pos() == 0)
 697                         // May affect external cell:
 698                         cur.recordUndoInset();
 699                 else
 700                         cur.recordUndo();
 701                 // if the inset can not be removed from within, delete it
 702                 if (!cur.backspace()) {
 703                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 704                         cur.innerText()->dispatch(cur, cmd);
 705                 }
 706                 break;
 707
 708         case LFUN_WORD_DELETE_FORWARD:
 709         case LFUN_CHAR_DELETE_FORWARD:
 710                 if (cur.pos() == cur.lastpos())
 711                         // May affect external cell:
 712                         cur.recordUndoInset();
 713                 else
 714                         cur.recordUndo();
 715                 // if the inset can not be removed from within, delete it
 716                 if (!cur.erase()) {
 717                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 718                         cur.innerText()->dispatch(cur, cmd);
 719                 }
 720                 break;
 721
 722         case LFUN_ESCAPE:
 723                 if (cur.selection())
 724                         cur.clearSelection();
 725                 else  {
 726                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 727                         cur.undispatched();
 728                 }
 729                 break;
 730
 731         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 732         // that is traversed by a single <CursorLeft>/<CursorRight>.
 733         case LFUN_INSET_TOGGLE:
 734                 cur.recordUndo();
 735                 lock(!lock());
 736                 cur.popForward();
 737                 break;
 738
 739         case LFUN_SELF_INSERT:
 740                 if (cmd.argument().size() != 1) {
 741                         cur.recordUndo();
 742                         docstring const arg = cmd.argument();
 743                         if (!interpretString(cur, arg))
 744                                 cur.insert(arg);
 745                         break;
 746                 }
 747                 // Don't record undo steps if we are in macro mode and
 748                 // cmd.argument is the next character of the macro name.
 749                 // Otherwise we'll get an invalid cursor if we undo after
 750                 // the macro was finished and the macro is a known command,
 751                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 752                 // the InsetMathUnknown with name "frac" by an empty
 753                 // InsetMathFrac -> a pos value > 0 is invalid.
 754                 // A side effect is that an undo before the macro is finished
 755                 // undoes the complete macro, not only the last character.
 756                 if (!cur.inMacroMode())
 757                         cur.recordUndo();
 758
 759                 // spacial handling of space. If we insert an inset
 760                 // via macro mode, we want to put the cursor inside it
 761                 // if relevant. Think typing "\frac<space>".
 762                 if (cmd.argument()[0] == ' '
 763                     && cur.inMacroMode() && cur.macroName() != "\\"
 764                     && cur.macroModeClose()) {
 765                         MathAtom const atom = cur.prevAtom();
 766                         if (atom->asNestInset() && atom->isActive()) {
 767                                 cur.posBackward();
 768                                 cur.pushBackward(*cur.nextInset());
 769                         }
 770                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 771                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 772                         cur.undispatched();
 773                 }
 774                 break;
 775
 776         //case LFUN_SERVER_GET_XY:
 777         //      sprintf(dispatch_buffer, "%d %d",);
 778         //      break;
 779
 780         case LFUN_SERVER_SET_XY: {
 781                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 782                 int x = 0;
 783                 int y = 0;
 784                 istringstream is(to_utf8(cmd.argument()));
 785                 is >> x >> y;
 786                 cur.setScreenPos(x, y);
 787                 break;
 788         }
 789
 790         // Special casing for superscript in case of LyX handling
 791         // dead-keys:
 792         case LFUN_ACCENT_CIRCUMFLEX:
 793                 if (cmd.argument().empty()) {
 794                         // do superscript if LyX handles
 795                         // deadkeys
 796                         cur.recordUndo();
 797                         script(cur, true, grabAndEraseSelection(cur));
 798                 }
 799                 break;
 800
 801         case LFUN_ACCENT_UMLAUT:
 802         case LFUN_ACCENT_ACUTE:
 803         case LFUN_ACCENT_GRAVE:
 804         case LFUN_ACCENT_BREVE:
 805         case LFUN_ACCENT_DOT:
 806         case LFUN_ACCENT_MACRON:
 807         case LFUN_ACCENT_CARON:
 808         case LFUN_ACCENT_TILDE:
 809         case LFUN_ACCENT_CEDILLA:
 810         case LFUN_ACCENT_CIRCLE:
 811         case LFUN_ACCENT_UNDERDOT:
 812         case LFUN_ACCENT_TIE:
 813         case LFUN_ACCENT_OGONEK:
 814         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 815                 break;
 816
 817         //  Math fonts
 818         case LFUN_FONT_FREE_APPLY:
 819         case LFUN_FONT_FREE_UPDATE:
 820                 handleFont2(cur, cmd.argument());
 821                 break;
 822
 823         case LFUN_FONT_BOLD:
 824                 if (currentMode() == TEXT_MODE)
 825                         handleFont(cur, cmd.argument(), "textbf");
 826                 else
 827                         handleFont(cur, cmd.argument(), "mathbf");
 828                 break;
 829         case LFUN_FONT_SANS:
 830                 if (currentMode() == TEXT_MODE)
 831                         handleFont(cur, cmd.argument(), "textsf");
 832                 else
 833                         handleFont(cur, cmd.argument(), "mathsf");
 834                 break;
 835         case LFUN_FONT_EMPH:
 836                 if (currentMode() == TEXT_MODE)
 837                         handleFont(cur, cmd.argument(), "emph");
 838                 else
 839                         handleFont(cur, cmd.argument(), "mathcal");
 840                 break;
 841         case LFUN_FONT_ROMAN:
 842                 if (currentMode() == TEXT_MODE)
 843                         handleFont(cur, cmd.argument(), "textrm");
 844                 else
 845                         handleFont(cur, cmd.argument(), "mathrm");
 846                 break;
 847         case LFUN_FONT_TYPEWRITER:
 848                 if (currentMode() == TEXT_MODE)
 849                         handleFont(cur, cmd.argument(), "texttt");
 850                 else
 851                         handleFont(cur, cmd.argument(), "mathtt");
 852                 break;
 853         case LFUN_FONT_FRAK:
 854                 handleFont(cur, cmd.argument(), "mathfrak");
 855                 break;
 856         case LFUN_FONT_ITAL:
 857                 if (currentMode() == TEXT_MODE)
 858                         handleFont(cur, cmd.argument(), "textit");
 859                 else
 860                         handleFont(cur, cmd.argument(), "mathit");
 861                 break;
 862         case LFUN_FONT_NOUN:
 863                 if (currentMode() == TEXT_MODE)
 864                         // FIXME: should be "noun"
 865                         handleFont(cur, cmd.argument(), "textsc");
 866                 else
 867                         handleFont(cur, cmd.argument(), "mathbb");
 868                 break;
 869         /*
 870         case LFUN_FONT_FREE_APPLY:
 871                 handleFont(cur, cmd.argument(), "textrm");
 872                 break;
 873         */
 874         case LFUN_FONT_DEFAULT:
 875                 handleFont(cur, cmd.argument(), "textnormal");
 876                 break;
 877
 878         case LFUN_MATH_MODE: {
 879 #if 1
 880                 // ignore math-mode on when already in math mode
 881                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 882                         break;
 883                 cur.macroModeClose();
 884                 docstring const save_selection = grabAndEraseSelection(cur);
 885                 selClearOrDel(cur);
 886                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 887                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 888                 cur.posBackward();
 889                 cur.pushBackward(*cur.nextInset());
 890                 cur.niceInsert(save_selection);
 891 #else
 892                 if (currentMode() == Inset::TEXT_MODE) {
 893                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 894                         cur.message(_("create new math text environment ($...$)"));
 895                 } else {
 896                         handleFont(cur, cmd.argument(), "textrm");
 897                         cur.message(_("entered math text mode (textrm)"));
 898                 }
 899 #endif
 900                 break;
 901         }
 902
 903         case LFUN_MATH_SIZE:
 904 #if 0
 905                 cur.recordUndo();
 906                 cur.setSize(arg);
 907 #endif
 908                 break;
 909
 910         case LFUN_MATH_MATRIX: {
 911                 cur.recordUndo();
 912                 unsigned int m = 1;
 913                 unsigned int n = 1;
 914                 docstring v_align;
 915                 docstring h_align;
 916                 idocstringstream is(cmd.argument());
 917                 is >> m >> n >> v_align >> h_align;
 918                 if (m < 1)
 919                         m = 1;
 920                 if (n < 1)
 921                         n = 1;
 922                 v_align += 'c';
 923                 cur.niceInsert(
 924                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 925                 break;
 926         }
 927
 928         case LFUN_MATH_DELIM: {
 929                 docstring ls;
 930                 docstring rs = split(cmd.argument(), ls, ' ');
 931                 // Reasonable default values
 932                 if (ls.empty())
 933                         ls = '(';
 934                 if (rs.empty())
 935                         rs = ')';
 936                 cur.recordUndo();
 937                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
 938                 break;
 939         }
 940
 941         case LFUN_MATH_BIGDELIM: {
 942                 docstring const lname  = from_utf8(cmd.getArg(0));
 943                 docstring const ldelim = from_utf8(cmd.getArg(1));
 944                 docstring const rname  = from_utf8(cmd.getArg(2));
 945                 docstring const rdelim = from_utf8(cmd.getArg(3));
 946                 latexkeys const * l = in_word_set(lname);
 947                 bool const have_l = l && l->inset == "big" &&
 948                                     InsetMathBig::isBigInsetDelim(ldelim);
 949                 l = in_word_set(rname);
 950                 bool const have_r = l && l->inset == "big" &&
 951                                     InsetMathBig::isBigInsetDelim(rdelim);
 952                 // We mimic LFUN_MATH_DELIM in case we have an empty left
 953                 // or right delimiter.
 954                 if (have_l || have_r) {
 955                         cur.recordUndo();
 956                         docstring const selection = grabAndEraseSelection(cur);
 957                         selClearOrDel(cur);
 958                         if (have_l)
 959                                 cur.insert(MathAtom(new InsetMathBig(lname,
 960                                                                 ldelim)));
 961                         cur.niceInsert(selection);
 962                         if (have_r)
 963                                 cur.insert(MathAtom(new InsetMathBig(rname,
 964                                                                 rdelim)));
 965                 }
 966                 // Don't call cur.undispatched() if we did nothing, this would
 967                 // lead to infinite recursion via Text::dispatch().
 968                 break;
 969         }
 970
 971         case LFUN_SPACE_INSERT:
 972         case LFUN_MATH_SPACE:
 973                 cur.recordUndo();
 974                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
 975                 break;
 976
 977         case LFUN_ERT_INSERT:
 978                 // interpret this as if a backslash was typed
 979                 cur.recordUndo();
 980                 interpretChar(cur, '\\');
 981                 break;
 982
 983         case LFUN_MATH_SUBSCRIPT:
 984                 // interpret this as if a _ was typed
 985                 cur.recordUndo();
 986                 interpretChar(cur, '_');
 987                 break;
 988
 989         case LFUN_MATH_SUPERSCRIPT:
 990                 // interpret this as if a ^ was typed
 991                 cur.recordUndo();
 992                 interpretChar(cur, '^');
 993                 break;
 994
 995         case LFUN_MATH_MACRO_FOLD:
 996         case LFUN_MATH_MACRO_UNFOLD: {
 997                 Cursor it = cur;
 998                 bool fold = cmd.action == LFUN_MATH_MACRO_FOLD;
 999                 bool found = findMacroToFoldUnfold(it, fold);
1000                 if (found) {
1001                         MathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1002                         cur.recordUndoInset();
1003                         if (fold)
1004                                 macro->fold(cur);
1005                         else
1006                                 macro->unfold(cur);
1007                 }
1008                 break;
1009         }
1010
1011         case LFUN_QUOTE_INSERT:
1012                 // interpret this as if a straight " was typed
1013                 cur.recordUndo();
1014                 interpretChar(cur, '\"');
1015                 break;
1016
1017 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1018 // handling such that "self-insert" works on "arbitrary stuff" too, and
1019 // math-insert only handles special math things like "matrix".
1020         case LFUN_MATH_INSERT: {
1021                 cur.recordUndo();
1022                 if (cmd.argument() == "^" || cmd.argument() == "_") {
1023                         interpretChar(cur, cmd.argument()[0]);
1024                 } else
1025                         cur.niceInsert(cmd.argument());
1026                 break;
1027                 }
1028
1029         case LFUN_DIALOG_SHOW_NEW_INSET: {
1030                 docstring const & name = cmd.argument();
1031                 string data;
1032                 if (name == "ref") {
1033                         InsetMathRef tmp(name);
1034                         data = tmp.createDialogStr(to_utf8(name));
1035                 }
1036                 cur.bv().showDialog(to_utf8(name), data);
1037                 break;
1038         }
1039
1040         case LFUN_INSET_INSERT: {
1041                 MathData ar;
1042                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1043                         cur.recordUndo();
1044                         cur.insert(ar);
1045                 } else
1046                         cur.undispatched();
1047                 break;
1048         }
1049         case LFUN_INSET_DISSOLVE:
1050                 if (!asHullInset()) {
1051                         cur.recordUndoInset();
1052                         cur.pullArg();
1053                 }
1054                 break;
1055
1056         default:
1057                 InsetMath::doDispatch(cur, cmd);
1058                 break;
1059         }
1060 }
1061
1062
1063 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1064         // look for macro to open/close, but stay in mathed
1065         for (; !it.empty(); it.pop_back()) {
1066
1067                 // go backward through the current cell
1068                 Inset * inset = it.nextInset();
1069                 while (inset && inset->asInsetMath()) {
1070                         MathMacro * macro = inset->asInsetMath()->asMacro();
1071                         if (macro) {
1072                                 // found the an macro to open/close?
1073                                 if (macro->folded() != fold)
1074                                         return true;
1075
1076                                 // Wrong folding state.
1077                                 // If this was the first we see in this slice, look further left,
1078                                 // otherwise go up.
1079                                 if (inset != it.nextInset())
1080                                         break;
1081                         }
1082
1083                         // go up if this was the left most position
1084                         if (it.pos() == 0)
1085                                 break;
1086
1087                         // go left
1088                         it.pos()--;
1089                         inset = it.nextInset();
1090                 }
1091         }
1092
1093         return false;
1094 }
1095
1096
1097 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1098                 FuncStatus & flag) const
1099 {
1100         // the font related toggles
1101         //string tc = "mathnormal";
1102         bool ret = true;
1103         string const arg = to_utf8(cmd.argument());
1104         switch (cmd.action) {
1105         case LFUN_TABULAR_FEATURE:
1106                 flag.enabled(false);
1107                 break;
1108 #if 0
1109         case LFUN_TABULAR_FEATURE:
1110                 // FIXME: check temporarily disabled
1111                 // valign code
1112                 char align = mathcursor::valign();
1113                 if (align == '\0') {
1114                         enable = false;
1115                         break;
1116                 }
1117                 if (cmd.argument().empty()) {
1118                         flag.clear();
1119                         break;
1120                 }
1121                 if (!contains("tcb", cmd.argument()[0])) {
1122                         enable = false;
1123                         break;
1124                 }
1125                 flag.setOnOff(cmd.argument()[0] == align);
1126                 break;
1127 #endif
1128         /// We have to handle them since 1.4 blocks all unhandled actions
1129         case LFUN_FONT_ITAL:
1130         case LFUN_FONT_BOLD:
1131         case LFUN_FONT_SANS:
1132         case LFUN_FONT_EMPH:
1133         case LFUN_FONT_TYPEWRITER:
1134         case LFUN_FONT_NOUN:
1135         case LFUN_FONT_ROMAN:
1136         case LFUN_FONT_DEFAULT:
1137                 flag.enabled(true);
1138                 break;
1139         case LFUN_MATH_MUTATE:
1140                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1141                 flag.setOnOff(false);
1142                 break;
1143
1144         // we just need to be in math mode to enable that
1145         case LFUN_MATH_SIZE:
1146         case LFUN_MATH_SPACE:
1147         case LFUN_MATH_LIMITS:
1148         case LFUN_MATH_EXTERN:
1149                 flag.enabled(true);
1150                 break;
1151
1152         case LFUN_FONT_FRAK:
1153                 flag.enabled(currentMode() != TEXT_MODE);
1154                 break;
1155
1156         case LFUN_MATH_INSERT: {
1157                 bool const textarg =
1158                         arg == "\\textbf"   || arg == "\\textsf" ||
1159                         arg == "\\textrm"   || arg == "\\textmd" ||
1160                         arg == "\\textit"   || arg == "\\textsc" ||
1161                         arg == "\\textsl"   || arg == "\\textup" ||
1162                         arg == "\\texttt"   || arg == "\\textbb" ||
1163                         arg == "\\textnormal";
1164                 flag.enabled(currentMode() != TEXT_MODE || textarg);
1165                 break;
1166         }
1167
1168         case LFUN_MATH_MATRIX:
1169                 flag.enabled(currentMode() == MATH_MODE);
1170                 break;
1171
1172         case LFUN_INSET_INSERT: {
1173                 // Don't test createMathInset_fromDialogStr(), since
1174                 // getStatus is not called with a valid reference and the
1175                 // dialog would not be applyable.
1176                 string const name = cmd.getArg(0);
1177                 flag.enabled(name == "ref");
1178                 break;
1179         }
1180
1181         case LFUN_MATH_DELIM:
1182         case LFUN_MATH_BIGDELIM:
1183                 // Don't do this with multi-cell selections
1184                 flag.enabled(cur.selBegin().idx() == cur.selEnd().idx());
1185                 break;
1186
1187         case LFUN_MATH_MACRO_FOLD:
1188         case LFUN_MATH_MACRO_UNFOLD: {
1189                 Cursor it = cur;
1190                 bool found = findMacroToFoldUnfold(it, cmd.action == LFUN_MATH_MACRO_FOLD);
1191                 flag.enabled(found);
1192                 break;
1193         }
1194
1195         case LFUN_SPECIALCHAR_INSERT:
1196                 // FIXME: These would probably make sense in math-text mode
1197                 flag.enabled(false);
1198                 break;
1199
1200         case LFUN_INSET_DISSOLVE:
1201                 flag.enabled(!asHullInset());
1202                 break;
1203
1204         default:
1205                 ret = false;
1206                 break;
1207         }
1208         return ret;
1209 }
1210
1211
1212 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1213 {
1214         cur.push(*this);
1215         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_RIGHT ||
1216                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1217         cur.idx() = enter_front ? 0 : cur.lastidx();
1218         cur.pos() = enter_front ? 0 : cur.lastpos();
1219         cur.resetAnchor();
1220         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1221 }
1222
1223
1224 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1225 {
1226         int idx_min = 0;
1227         int dist_min = 1000000;
1228         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1229                 int const d = cell(i).dist(cur.bv(), x, y);
1230                 if (d < dist_min) {
1231                         dist_min = d;
1232                         idx_min = i;
1233                 }
1234         }
1235         MathData & ar = cell(idx_min);
1236         cur.push(*this);
1237         cur.idx() = idx_min;
1238         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1239
1240         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1241         if (dist_min == 0) {
1242                 // hit inside cell
1243                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1244                         if (ar[i]->covers(cur.bv(), x, y))
1245                                 return ar[i].nucleus()->editXY(cur, x, y);
1246         }
1247         return this;
1248 }
1249
1250
1251 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1252 {
1253         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1254         BufferView & bv = cur.bv();
1255         bool do_selection = cmd.button() == mouse_button::button1
1256                 && cmd.argument() == "region-select";
1257         bv.mouseSetCursor(cur, do_selection);
1258         if (cmd.button() == mouse_button::button1) {
1259                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1260                 // Update the cursor update flags as needed:
1261                 //
1262                 // Update::Decoration: tells to update the decoration
1263                 //                     (visual box corners that define
1264                 //                     the inset)/
1265                 // Update::FitCursor: adjust the screen to the cursor
1266                 //                    position if needed
1267                 // cur.result().update(): don't overwrite previously set flags.
1268                 cur.updateFlags(Update::Decoration | Update::FitCursor
1269                                 | cur.result().update());
1270         } else if (cmd.button() == mouse_button::button2) {
1271                 if (cap::selection()) {
1272                         // See comment in Text::dispatch why we do this
1273                         cap::copySelectionToStack();
1274                         cmd = FuncRequest(LFUN_PASTE, "0");
1275                         doDispatch(bv.cursor(), cmd);
1276                 } else {
1277                         MathData ar;
1278                         asArray(theSelection().get(), ar);
1279                         bv.cursor().insert(ar);
1280                 }
1281         }
1282 }
1283
1284
1285 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1286 {
1287         // only select with button 1
1288         if (cmd.button() == mouse_button::button1) {
1289                 Cursor & bvcur = cur.bv().cursor();
1290                 if (bvcur.anchor_.hasPart(cur)) {
1291                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1292                         bvcur.setCursor(cur);
1293                         bvcur.selection() = true;
1294                         //lyxerr << "MOTION " << bvcur << endl;
1295                 } else
1296                         cur.undispatched();
1297         }
1298 }
1299
1300
1301 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1302 {
1303         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1304
1305         if (cmd.button() == mouse_button::button1) {
1306                 if (!cur.selection())
1307                         cur.noUpdate();
1308                 else {
1309                         Cursor & bvcur = cur.bv().cursor();
1310                         bvcur.selection() = true;
1311                 }
1312                 return;
1313         }
1314
1315         cur.undispatched();
1316 }
1317
1318
1319 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1320 {
1321         //lyxerr << "interpret 2: '" << c << "'" << endl;
1322         docstring save_selection;
1323         if (c == '^' || c == '_')
1324                 save_selection = grabAndEraseSelection(cur);
1325
1326         cur.clearTargetX();
1327
1328         // handle macroMode
1329         if (cur.inMacroMode()) {
1330                 docstring name = cur.macroName();
1331
1332                 /// are we currently typing '#1' or '#2' or...?
1333                 if (name == "\\#") {
1334                         cur.backspace();
1335                         int n = c - '0';
1336                         if (n >= 1 && n <= 9)
1337                                 cur.insert(new MathMacroArgument(n));
1338                         return true;
1339                 }
1340
1341                 if (isAlphaASCII(c)) {
1342                         cur.activeMacro()->setName(name + docstring(1, c));
1343                         return true;
1344                 }
1345
1346                 // handle 'special char' macros
1347                 if (name == "\\") {
1348                         // remove the '\\'
1349                         if (c == '\\') {
1350                                 cur.backspace();
1351                                 if (currentMode() == InsetMath::TEXT_MODE)
1352                                         cur.niceInsert(createInsetMath("textbackslash"));
1353                                 else
1354                                         cur.niceInsert(createInsetMath("backslash"));
1355                         } else if (c == '{') {
1356                                 cur.backspace();
1357                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1358                         } else if (c == '%') {
1359                                 cur.backspace();
1360                                 cur.niceInsert(MathAtom(new InsetMathComment));
1361                         } else if (c == '#') {
1362                                 BOOST_ASSERT(cur.activeMacro());
1363                                 cur.activeMacro()->setName(name + docstring(1, c));
1364                         } else {
1365                                 cur.backspace();
1366                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1367                         }
1368                         return true;
1369                 }
1370
1371                 // One character big delimiters. The others are handled in
1372                 // interpretString().
1373                 latexkeys const * l = in_word_set(name.substr(1));
1374                 if (name[0] == '\\' && l && l->inset == "big") {
1375                         docstring delim;
1376                         switch (c) {
1377                         case '{':
1378                                 delim = from_ascii("\\{");
1379                                 break;
1380                         case '}':
1381                                 delim = from_ascii("\\}");
1382                                 break;
1383                         default:
1384                                 delim = docstring(1, c);
1385                                 break;
1386                         }
1387                         if (InsetMathBig::isBigInsetDelim(delim)) {
1388                                 // name + delim ared a valid InsetMathBig.
1389                                 // We can't use cur.macroModeClose() because
1390                                 // it does not handle delim.
1391                                 InsetMathUnknown * p = cur.activeMacro();
1392                                 p->finalize();
1393                                 --cur.pos();
1394                                 cur.cell().erase(cur.pos());
1395                                 cur.plainInsert(MathAtom(
1396                                         new InsetMathBig(name.substr(1), delim)));
1397                                 return true;
1398                         }
1399                 }
1400
1401                 // leave macro mode and try again if necessary
1402                 cur.macroModeClose();
1403                 if (c == '{')
1404                         cur.niceInsert(MathAtom(new InsetMathBrace));
1405                 else if (c != ' ')
1406                         interpretChar(cur, c);
1407                 return true;
1408         }
1409
1410         // This is annoying as one has to press <space> far too often.
1411         // Disable it.
1412
1413 #if 0
1414                 // leave autocorrect mode if necessary
1415                 if (autocorrect() && c == ' ') {
1416                         autocorrect() = false;
1417                         return true;
1418                 }
1419 #endif
1420
1421         // just clear selection on pressing the space bar
1422         if (cur.selection() && c == ' ') {
1423                 cur.selection() = false;
1424                 return true;
1425         }
1426
1427         selClearOrDel(cur);
1428
1429         if (c == '\\') {
1430                 //lyxerr << "starting with macro" << endl;
1431                 cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), false)));
1432                 return true;
1433         }
1434
1435         if (c == '\n') {
1436                 if (currentMode() == InsetMath::TEXT_MODE)
1437                         cur.insert(c);
1438                 return true;
1439         }
1440
1441         if (c == ' ') {
1442                 if (currentMode() == InsetMath::TEXT_MODE) {
1443                         // insert spaces in text mode,
1444                         // but suppress direct insertion of two spaces in a row
1445                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1446                         // it is better than nothing...
1447                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1448                                 cur.insert(c);
1449                                 // FIXME: we have to enable full redraw here because of the
1450                                 // visual box corners that define the inset. If we know for
1451                                 // sure that we stay within the same cell we can optimize for
1452                                 // that using:
1453                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1454                         }
1455                         return true;
1456                 }
1457                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1458                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1459                         // FIXME: we have to enable full redraw here because of the
1460                         // visual box corners that define the inset. If we know for
1461                         // sure that we stay within the same cell we can optimize for
1462                         // that using:
1463                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1464                         return true;
1465                 }
1466
1467                 if (cur.popForward()) {
1468                         // FIXME: we have to enable full redraw here because of the
1469                         // visual box corners that define the inset. If we know for
1470                         // sure that we stay within the same cell we can optimize for
1471                         // that using:
1472                         //cur.updateFlags(Update::FitCursor);
1473                         return true;
1474                 }
1475
1476                 // if we are at the very end, leave the formula
1477                 return cur.pos() != cur.lastpos();
1478         }
1479
1480         // These shouldn't work in text mode:
1481         if (currentMode() != InsetMath::TEXT_MODE) {
1482                 if (c == '_') {
1483                         script(cur, false, save_selection);
1484                         return true;
1485                 }
1486                 if (c == '^') {
1487                         script(cur, true, save_selection);
1488                         return true;
1489                 }
1490                 if (c == '~') {
1491                         cur.niceInsert(createInsetMath("sim"));
1492                         return true;
1493                 }
1494         }
1495
1496         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1497             c == '%' || c == '_' || c == '^') {
1498                 cur.niceInsert(createInsetMath(docstring(1, c)));
1499                 return true;
1500         }
1501
1502
1503         // try auto-correction
1504         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1505         //      return true;
1506
1507         // no special circumstances, so insert the character without any fuss
1508         cur.insert(c);
1509         cur.autocorrect() = true;
1510         return true;
1511 }
1512
1513
1514 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1515 {
1516         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1517         // possible
1518         if (!cur.empty() && cur.pos() > 0 &&
1519             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1520                 if (InsetMathBig::isBigInsetDelim(str)) {
1521                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1522                         if (prev[0] == '\\') {
1523                                 prev = prev.substr(1);
1524                                 latexkeys const * l = in_word_set(prev);
1525                                 if (l && l->inset == "big") {
1526                                         cur.cell()[cur.pos() - 1] =
1527                                                 MathAtom(new InsetMathBig(prev, str));
1528                                         return true;
1529                                 }
1530                         }
1531                 }
1532         }
1533         return false;
1534 }
1535
1536
1537 bool InsetMathNest::script(Cursor & cur, bool up,
1538                 docstring const & save_selection)
1539 {
1540         // Hack to get \^ and \_ working
1541         //lyxerr << "handling script: up: " << up << endl;
1542         if (cur.inMacroMode() && cur.macroName() == "\\") {
1543                 if (up)
1544                         cur.niceInsert(createInsetMath("mathcircumflex"));
1545                 else
1546                         interpretChar(cur, '_');
1547                 return true;
1548         }
1549
1550         cur.macroModeClose();
1551         if (asScriptInset() && cur.idx() == 0) {
1552                 // we are in a nucleus of a script inset, move to _our_ script
1553                 InsetMathScript * inset = asScriptInset();
1554                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1555                 inset->ensure(up);
1556                 cur.idx() = inset->idxOfScript(up);
1557                 cur.pos() = 0;
1558         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1559                 --cur.pos();
1560                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1561                 cur.push(*inset);
1562                 inset->ensure(up);
1563                 cur.idx() = inset->idxOfScript(up);
1564                 cur.pos() = cur.lastpos();
1565         } else {
1566                 // convert the thing to our left to a scriptinset or create a new
1567                 // one if in the very first position of the array
1568                 if (cur.pos() == 0) {
1569                         //lyxerr << "new scriptinset" << endl;
1570                         cur.insert(new InsetMathScript(up));
1571                 } else {
1572                         //lyxerr << "converting prev atom " << endl;
1573                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1574                 }
1575                 --cur.pos();
1576                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1577                 // See comment in MathParser.cpp for special handling of {}-bases
1578
1579                 cur.push(*inset);
1580                 cur.idx() = 1;
1581                 cur.pos() = 0;
1582         }
1583         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1584         cur.niceInsert(save_selection);
1585         cur.resetAnchor();
1586         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1587         return true;
1588 }
1589
1590
1591 bool InsetMathNest::completionSupported(Cursor const & cur) const
1592 {
1593         return cur.inMacroMode();
1594 }
1595
1596
1597 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
1598 {
1599         return cur.inMacroMode();
1600 }
1601
1602
1603 bool InsetMathNest::automaticInlineCompletion() const
1604 {
1605         return lyxrc.completion_inline_math;
1606 }
1607
1608
1609 bool InsetMathNest::automaticPopupCompletion() const
1610 {
1611         return lyxrc.completion_popup_math;
1612 }
1613
1614
1615 Inset::CompletionListPtr InsetMathNest::completionList(Cursor const & cur) const
1616 {
1617         if (!cur.inMacroMode())
1618                 return CompletionListPtr();
1619
1620         return CompletionListPtr(new MathCompletionList(cur));
1621 }
1622
1623
1624 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
1625 {
1626         if (!cur.inMacroMode())
1627                 return docstring();
1628
1629         return cur.activeMacro()->name();
1630 }
1631
1632
1633 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
1634                                      bool finished)
1635 {
1636         if (!cur.inMacroMode())
1637                 return false;
1638
1639         // append completion to active macro
1640         InsetMathUnknown * inset = cur.activeMacro();
1641         inset->setName(inset->name() + s);
1642
1643         // finish macro
1644         if (finished) {
1645 #if 0
1646                 // FIXME: this creates duplicates in the completion popup
1647                 // which looks ugly. Moreover the changes the list lengths
1648                 // which seems to
1649                 confuse the popup as well.
1650                 MathCompletionList::addToFavorites(inset->name());
1651 #endif
1652                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
1653         }
1654
1655         return true;
1656 }
1657
1658
1659 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
1660                                         Dimension & dim) const
1661 {
1662         Inset const * inset = cur.activeMacro();
1663         if (!inset)
1664                 return;
1665
1666         // get inset dimensions
1667         dim = cur.bv().coordCache().insets().dim(inset);
1668         Point xy
1669         = cur.bv().coordCache().insets().xy(inset);
1670         x = xy.x_;
1671         y = xy.y_;
1672 }
1673
1674
1675 bool InsetMathNest::cursorMathForward(Cursor & cur)
1676 {
1677         if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
1678                 cur.pushBackward(*cur.nextAtom().nucleus());
1679                 cur.inset().idxFirst(cur);
1680                 return true;
1681         }
1682         if (cur.posForward() || idxForward(cur) || cur.selection())
1683                 return true;
1684         // try to pop forwards --- but don't pop out of math! leave that to
1685         // the FINISH lfuns
1686         int s = cur.depth() - 2;
1687         if (s >= 0 && cur[s].inset().asInsetMath())
1688                 return cur.popForward();
1689         return false;
1690 }
1691
1692
1693 bool InsetMathNest::cursorMathBackward(Cursor & cur)
1694 {
1695         if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
1696                 cur.posBackward();
1697                 cur.push(*cur.nextAtom().nucleus());
1698                 cur.inset().idxLast(cur);
1699                 return true;
1700         }
1701         if (cur.posBackward() || idxBackward(cur) || cur.selection())
1702                 return true;
1703         // try to pop backwards --- but don't pop out of math! leave that to
1704         // the FINISH lfuns
1705         int s = cur.depth() - 2;
1706         if (s >= 0 && cur[s].inset().asInsetMath())
1707                 return cur.popBackward();
1708         return false;
1709 }
1710
1711
1712 ////////////////////////////////////////////////////////////////////
1713
1714 MathCompletionList::MathCompletionList(Cursor const & cur)
1715 {
1716         // fill it with macros from the buffer
1717         Buffer::MacroNameSet macros;
1718         cur.buffer().listMacroNames(macros);
1719         Buffer::MacroNameSet::const_iterator it;
1720         for (it = macros.begin(); it != macros.end(); ++it) {
1721                 if (cur.buffer().getMacro(*it, cur, false))
1722                         locals.push_back("\\" + *it);
1723         }
1724         sort(locals.begin(), locals.end());
1725
1726         if (globals.size() > 0)
1727                 return;
1728
1729         // fill in global macros
1730         macros.clear();
1731         MacroTable::globalMacros().getMacroNames(macros);
1732         lyxerr << "Globals completion macros: ";
1733         for (it = macros.begin(); it != macros.end(); ++it) {
1734                 lyxerr << "\\" + *it << " ";
1735                 globals.push_back("\\" + *it);
1736         }
1737         lyxerr << std::endl;
1738
1739         // fill in global commands
1740         globals.push_back(from_ascii("\\boxed"));
1741         globals.push_back(from_ascii("\\fbox"));
1742         globals.push_back(from_ascii("\\framebox"));
1743         globals.push_back(from_ascii("\\makebox"));
1744         globals.push_back(from_ascii("\\kern"));
1745         globals.push_back(from_ascii("\\xrightarrow"));
1746         globals.push_back(from_ascii("\\xleftarrow"));
1747         globals.push_back(from_ascii("\\split"));
1748         globals.push_back(from_ascii("\\gathered"));
1749         globals.push_back(from_ascii("\\aligned"));
1750         globals.push_back(from_ascii("\\alignedat"));
1751         globals.push_back(from_ascii("\\cases"));
1752         globals.push_back(from_ascii("\\substack"));
1753         globals.push_back(from_ascii("\\subarray"));
1754         globals.push_back(from_ascii("\\array"));
1755         globals.push_back(from_ascii("\\sqrt"));
1756         globals.push_back(from_ascii("\\root"));
1757         globals.push_back(from_ascii("\\tabular"));
1758         globals.push_back(from_ascii("\\stackrel"));
1759         globals.push_back(from_ascii("\\binom"));
1760         globals.push_back(from_ascii("\\choose"));
1761         globals.push_back(from_ascii("\\choose"));
1762         globals.push_back(from_ascii("\\frac"));
1763         globals.push_back(from_ascii("\\over"));
1764         globals.push_back(from_ascii("\\nicefrac"));
1765         globals.push_back(from_ascii("\\unitfrac"));
1766         globals.push_back(from_ascii("\\unitfracthree"));
1767         globals.push_back(from_ascii("\\unitone"));
1768         globals.push_back(from_ascii("\\unittwo"));
1769         globals.push_back(from_ascii("\\infer"));
1770         globals.push_back(from_ascii("\\atop"));
1771         globals.push_back(from_ascii("\\lefteqn"));
1772         globals.push_back(from_ascii("\\boldsymbol"));
1773         globals.push_back(from_ascii("\\color"));
1774         globals.push_back(from_ascii("\\normalcolor"));
1775         globals.push_back(from_ascii("\\textcolor"));
1776         globals.push_back(from_ascii("\\dfrac"));
1777         globals.push_back(from_ascii("\\tfrac"));
1778         globals.push_back(from_ascii("\\dbinom"));
1779         globals.push_back(from_ascii("\\tbinom"));
1780         globals.push_back(from_ascii("\\hphantom"));
1781         globals.push_back(from_ascii("\\phantom"));
1782         globals.push_back(from_ascii("\\vphantom"));
1783         WordList const & words = mathedWordList();
1784         WordList::const_iterator it2;
1785         lyxerr << "Globals completion commands: ";
1786         for (it2 = words.begin(); it2 != words.end(); ++it2) {
1787                 globals.push_back("\\" + (*it2).first);
1788                 lyxerr << "\\" + (*it2).first << " ";
1789         }
1790         lyxerr << std::endl;
1791         sort(globals.begin(), globals.end());
1792 }
1793
1794
1795 MathCompletionList::~MathCompletionList()
1796 {
1797 }
1798
1799
1800 size_type MathCompletionList::size() const
1801 {
1802         return favorites.size() + locals.size() + globals.size();
1803 }
1804
1805
1806 docstring MathCompletionList::data(size_t idx) const
1807 {
1808         size_t fsize = favorites.size();
1809         size_t lsize = locals.size();
1810         if (idx >= fsize + lsize)
1811                 return globals[idx - lsize - fsize];
1812         else if (idx >= fsize)
1813                 return locals[idx - fsize];
1814         else
1815                 return favorites[idx];
1816 }
1817
1818
1819 std::string MathCompletionList::icon(size_t idx) const
1820 {
1821         // get the latex command
1822         docstring cmd;
1823         size_t fsize = favorites.size();
1824         size_t lsize = locals.size();
1825         if (idx >= fsize + lsize)
1826                 cmd = globals[idx - lsize - fsize];
1827         else if (idx >= fsize)
1828                 cmd = locals[idx - fsize];
1829         else
1830                 cmd = favorites[idx];
1831
1832         // get the icon resource name by stripping the backslash
1833         return "images/math/" + to_utf8(cmd.substr(1)) + ".png";
1834 }
1835
1836
1837
1838 void MathCompletionList::addToFavorites(docstring const & completion)
1839 {
1840         // remove old occurrence
1841         std::deque<docstring>::iterator it;
1842         for (it = favorites.begin(); it != favorites.end(); ++it) {
1843                 if (*it == completion) {
1844                         favorites.erase(it);
1845                         break;
1846                 }
1847         }
1848
1849         // put it to the front
1850         favorites.push_front(completion);
1851         favorites.resize(min(int(favorites.size()), 10));
1852 }
1853
1854
1855 std::vector<docstring> MathCompletionList::globals;
1856 std::deque<docstring> MathCompletionList::favorites;
1857
1858 } // namespace lyx