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