src/mathed/InsetMathNest.cpp

   1 /**
   2  * \file InsetMathNest.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "InsetMathNest.h"
  14
  15 #include "InsetMathArray.h"
  16 #include "InsetMathBig.h"
  17 #include "InsetMathBox.h"
  18 #include "InsetMathBrace.h"
  19 #include "InsetMathColor.h"
  20 #include "InsetMathComment.h"
  21 #include "InsetMathDelim.h"
  22 #include "InsetMathHull.h"
  23 #include "InsetMathRef.h"
  24 #include "InsetMathScript.h"
  25 #include "InsetMathSpace.h"
  26 #include "InsetMathSymbol.h"
  27 #include "InsetMathUnknown.h"
  28 #include "MathCompletionList.h"
  29 #include "MathData.h"
  30 #include "MathFactory.h"
  31 #include "MathMacro.h"
  32 #include "MathMacroArgument.h"
  33 #include "MathParser.h"
  34 #include "MathStream.h"
  35 #include "MathSupport.h"
  36
  37 #include "Bidi.h"
  38 #include "Buffer.h"
  39 #include "BufferView.h"
  40 #include "CoordCache.h"
  41 #include "Cursor.h"
  42 #include "CutAndPaste.h"
  43 #include "DispatchResult.h"
  44 #include "FuncRequest.h"
  45 #include "FuncStatus.h"
  46 #include "LyXFunc.h"
  47 #include "LyXRC.h"
  48 #include "OutputParams.h"
  49 #include "Text.h"
  50
  51 #include "frontends/Clipboard.h"
  52 #include "frontends/Painter.h"
  53 #include "frontends/Selection.h"
  54
  55 #include "support/lassert.h"
  56 #include "support/debug.h"
  57 #include "support/gettext.h"
  58 #include "support/lstrings.h"
  59 #include "support/textutils.h"
  60 #include "support/docstream.h"
  61
  62 #include <algorithm>
  63 #include <sstream>
  64
  65 using namespace std;
  66 using namespace lyx::support;
  67
  68 namespace lyx {
  69
  70 using cap::copySelection;
  71 using cap::grabAndEraseSelection;
  72 using cap::cutSelection;
  73 using cap::replaceSelection;
  74 using cap::selClearOrDel;
  75
  76
  77 InsetMathNest::InsetMathNest(idx_type nargs)
  78         : cells_(nargs), lock_(false), mouse_hover_(false)
  79 {}
  80
  81
  82 InsetMathNest::InsetMathNest(InsetMathNest const & inset)
  83         : InsetMath(inset), cells_(inset.cells_), lock_(inset.lock_),
  84           mouse_hover_(false)
  85 {}
  86
  87
  88 InsetMathNest & InsetMathNest::operator=(InsetMathNest const & inset)
  89 {
  90         cells_ = inset.cells_;
  91         lock_ = inset.lock_;
  92         mouse_hover_ = false;
  93         InsetMath::operator=(inset);
  94         return *this;
  95 }
  96
  97
  98 InsetMath::idx_type InsetMathNest::nargs() const
  99 {
 100         return cells_.size();
 101 }
 102
 103
 104 void InsetMathNest::cursorPos(BufferView const & bv,
 105                 CursorSlice const & sl, bool /*boundary*/,
 106                 int & x, int & y) const
 107 {
 108 // FIXME: This is a hack. Ideally, the coord cache should not store
 109 // absolute positions, but relative ones. This would mean to call
 110 // setXY() not in MathData::draw(), but in the parent insets' draw()
 111 // with the correctly adjusted x,y values. But this means that we'd have
 112 // to touch all (math)inset's draw() methods. Right now, we'll store
 113 // absolute value, and make them here relative, only to make them
 114 // absolute again when actually drawing the cursor. What a mess.
 115         LASSERT(&sl.inset() == this, /**/);
 116         MathData const & ar = sl.cell();
 117         CoordCache const & coord_cache = bv.coordCache();
 118         if (!coord_cache.getArrays().has(&ar)) {
 119                 // this can (semi-)legally happen if we just created this cell
 120                 // and it never has been drawn before. So don't ASSERT.
 121                 //lyxerr << "no cached data for array " << &ar << endl;
 122                 x = 0;
 123                 y = 0;
 124                 return;
 125         }
 126         Point const pt = coord_cache.getArrays().xy(&ar);
 127         if (!coord_cache.getInsets().has(this)) {
 128                 // same as above
 129                 //lyxerr << "no cached data for inset " << this << endl;
 130                 x = 0;
 131                 y = 0;
 132                 return;
 133         }
 134         Point const pt2 = coord_cache.getInsets().xy(this);
 135         //lyxerr << "retrieving position cache for MathData "
 136         //      << pt.x_ << ' ' << pt.y_ << endl;
 137         x = pt.x_ - pt2.x_ + ar.pos2x(&bv, sl.pos());
 138         y = pt.y_ - pt2.y_;
 139 //      lyxerr << "pt.y_ : " << pt.y_ << " pt2_.y_ : " << pt2.y_
 140 //              << " asc: " << ascent() << "  des: " << descent()
 141 //              << " ar.asc: " << ar.ascent() << " ar.des: " << ar.descent() << endl;
 142         // move cursor visually into empty cells ("blue rectangles");
 143         if (ar.empty())
 144                 x += 2;
 145 }
 146
 147
 148 void InsetMathNest::metrics(MetricsInfo const & mi) const
 149 {
 150         MetricsInfo m = mi;
 151         for (idx_type i = 0, n = nargs(); i != n; ++i) {
 152                 Dimension dim;
 153                 cell(i).metrics(m, dim);
 154         }
 155 }
 156
 157
 158 bool InsetMathNest::idxNext(Cursor & cur) const
 159 {
 160         LASSERT(&cur.inset() == this, /**/);
 161         if (cur.idx() == cur.lastidx())
 162                 return false;
 163         ++cur.idx();
 164         cur.pos() = 0;
 165         return true;
 166 }
 167
 168
 169 bool InsetMathNest::idxForward(Cursor & cur) const
 170 {
 171         return idxNext(cur);
 172 }
 173
 174
 175 bool InsetMathNest::idxPrev(Cursor & cur) const
 176 {
 177         LASSERT(&cur.inset() == this, /**/);
 178         if (cur.idx() == 0)
 179                 return false;
 180         --cur.idx();
 181         cur.pos() = cur.lastpos();
 182         return true;
 183 }
 184
 185
 186 bool InsetMathNest::idxBackward(Cursor & cur) const
 187 {
 188         return idxPrev(cur);
 189 }
 190
 191
 192 bool InsetMathNest::idxFirst(Cursor & cur) const
 193 {
 194         LASSERT(&cur.inset() == this, /**/);
 195         if (nargs() == 0)
 196                 return false;
 197         cur.idx() = 0;
 198         cur.pos() = 0;
 199         return true;
 200 }
 201
 202
 203 bool InsetMathNest::idxLast(Cursor & cur) const
 204 {
 205         LASSERT(&cur.inset() == this, /**/);
 206         if (nargs() == 0)
 207                 return false;
 208         cur.idx() = cur.lastidx();
 209         cur.pos() = cur.lastpos();
 210         return true;
 211 }
 212
 213
 214 void InsetMathNest::dump() const
 215 {
 216         odocstringstream oss;
 217         WriteStream os(oss);
 218         os << "---------------------------------------------\n";
 219         write(os);
 220         os << "\n";
 221         for (idx_type i = 0, n = nargs(); i != n; ++i)
 222                 os << cell(i) << "\n";
 223         os << "---------------------------------------------\n";
 224         lyxerr << to_utf8(oss.str());
 225 }
 226
 227
 228 void InsetMathNest::draw(PainterInfo & pi, int x, int y) const
 229 {
 230 #if 0
 231         if (lock_)
 232                 pi.pain.fillRectangle(x, y - ascent(), width(), height(),
 233                                         Color_mathlockbg);
 234 #endif
 235         setPosCache(pi, x, y);
 236 }
 237
 238
 239 void InsetMathNest::drawSelection(PainterInfo & pi, int x, int y) const
 240 {
 241         BufferView & bv = *pi.base.bv;
 242         // this should use the x/y values given, not the cached values
 243         Cursor & cur = bv.cursor();
 244         if (!cur.selection())
 245                 return;
 246         if (&cur.inset() != this)
 247                 return;
 248
 249         // FIXME: hack to get position cache warm
 250         bool const original_drawing_state = pi.pain.isDrawingEnabled();
 251         pi.pain.setDrawingEnabled(false);
 252         draw(pi, x, y);
 253         pi.pain.setDrawingEnabled(original_drawing_state);
 254
 255         CursorSlice s1 = cur.selBegin();
 256         CursorSlice s2 = cur.selEnd();
 257
 258         //lyxerr << "InsetMathNest::drawing selection: "
 259         //      << " s1: " << s1 << " s2: " << s2 << endl;
 260         if (s1.idx() == s2.idx()) {
 261                 MathData const & c = cell(s1.idx());
 262                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 263                 int x1 = g.pos.x_ + c.pos2x(pi.base.bv, s1.pos());
 264                 int y1 = g.pos.y_ - g.dim.ascent();
 265                 int x2 = g.pos.x_ + c.pos2x(pi.base.bv, s2.pos());
 266                 int y2 = g.pos.y_ + g.dim.descent();
 267                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 268         //lyxerr << "InsetMathNest::drawing selection 3: "
 269         //      << " x1: " << x1 << " x2: " << x2
 270         //      << " y1: " << y1 << " y2: " << y2 << endl;
 271         } else {
 272                 for (idx_type i = 0; i < nargs(); ++i) {
 273                         if (idxBetween(i, s1.idx(), s2.idx())) {
 274                                 MathData const & c = cell(i);
 275                                 Geometry const & g = bv.coordCache().getArrays().geometry(&c);
 276                                 int x1 = g.pos.x_;
 277                                 int y1 = g.pos.y_ - g.dim.ascent();
 278                                 int x2 = g.pos.x_ + g.dim.width();
 279                                 int y2 = g.pos.y_ + g.dim.descent();
 280                                 pi.pain.fillRectangle(x1, y1, x2 - x1, y2 - y1, Color_selection);
 281                         }
 282                 }
 283         }
 284 }
 285
 286
 287 void InsetMathNest::validate(LaTeXFeatures & features) const
 288 {
 289         for (idx_type i = 0; i < nargs(); ++i)
 290                 cell(i).validate(features);
 291 }
 292
 293
 294 void InsetMathNest::replace(ReplaceData & rep)
 295 {
 296         for (idx_type i = 0; i < nargs(); ++i)
 297                 cell(i).replace(rep);
 298 }
 299
 300
 301 bool InsetMathNest::contains(MathData const & ar) const
 302 {
 303         for (idx_type i = 0; i < nargs(); ++i)
 304                 if (cell(i).contains(ar))
 305                         return true;
 306         return false;
 307 }
 308
 309
 310 bool InsetMathNest::lock() const
 311 {
 312         return lock_;
 313 }
 314
 315
 316 void InsetMathNest::lock(bool l)
 317 {
 318         lock_ = l;
 319 }
 320
 321
 322 bool InsetMathNest::isActive() const
 323 {
 324         return nargs() > 0;
 325 }
 326
 327
 328 MathData InsetMathNest::glue() const
 329 {
 330         MathData ar;
 331         for (size_t i = 0; i < nargs(); ++i)
 332                 ar.append(cell(i));
 333         return ar;
 334 }
 335
 336
 337 void InsetMathNest::write(WriteStream & os) const
 338 {
 339         ModeSpecifier specifier(os, currentMode());
 340         docstring const latex_name = name();
 341         os << '\\' << latex_name;
 342         for (size_t i = 0; i < nargs(); ++i)
 343                 os << '{' << cell(i) << '}';
 344         if (nargs() == 0)
 345                 os.pendingSpace(true);
 346         if (lock_ && !os.latex()) {
 347                 os << "\\lyxlock";
 348                 os.pendingSpace(true);
 349         }
 350 }
 351
 352
 353 void InsetMathNest::normalize(NormalStream & os) const
 354 {
 355         os << '[' << name();
 356         for (size_t i = 0; i < nargs(); ++i)
 357                 os << ' ' << cell(i);
 358         os << ']';
 359 }
 360
 361
 362 int InsetMathNest::latex(odocstream & os, OutputParams const & runparams) const
 363 {
 364         WriteStream wi(os, runparams.moving_arg, true, runparams.dryrun,
 365                         runparams.encoding);
 366         write(wi);
 367         return wi.line();
 368 }
 369
 370
 371 bool InsetMathNest::setMouseHover(bool mouse_hover)
 372 {
 373         mouse_hover_ = mouse_hover;
 374         return true;
 375 }
 376
 377
 378 bool InsetMathNest::notifyCursorLeaves(Cursor const & /*old*/, Cursor & /*cur*/)
 379 {
 380         // FIXME: look here
 381 #if 0
 382         MathData & ar = cur.cell();
 383         // remove base-only "scripts"
 384         for (pos_type i = 0; i + 1 < ar.size(); ++i) {
 385                 InsetMathScript * p = operator[](i).nucleus()->asScriptInset();
 386                 if (p && p->nargs() == 1) {
 387                         MathData ar = p->nuc();
 388                         erase(i);
 389                         insert(i, ar);
 390                         cur.adjust(i, ar.size() - 1);
 391                 }
 392         }
 393
 394         // glue adjacent font insets of the same kind
 395         for (pos_type i = 0; i + 1 < size(); ++i) {
 396                 InsetMathFont * p = operator[](i).nucleus()->asFontInset();
 397                 InsetMathFont const * q = operator[](i + 1)->asFontInset();
 398                 if (p && q && p->name() == q->name()) {
 399                         p->cell(0).append(q->cell(0));
 400                         erase(i + 1);
 401                         cur.adjust(i, -1);
 402                 }
 403         }
 404 #endif
 405         return false;
 406 }
 407
 408
 409 void InsetMathNest::handleFont
 410         (Cursor & cur, docstring const & arg, char const * const font)
 411 {
 412         handleFont(cur, arg, from_ascii(font));
 413 }
 414
 415
 416 void InsetMathNest::handleFont(Cursor & cur, docstring const & arg,
 417         docstring const & font)
 418 {
 419         cur.recordUndoSelection();
 420
 421         // this whole function is a hack and won't work for incremental font
 422         // changes...
 423         if (cur.inset().asInsetMath()->name() == font)
 424                 cur.handleFont(to_utf8(font));
 425         else
 426                 handleNest(cur, createInsetMath(font), arg);
 427 }
 428
 429
 430 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest)
 431 {
 432         handleNest(cur, nest, docstring());
 433 }
 434
 435
 436 void InsetMathNest::handleNest(Cursor & cur, MathAtom const & nest,
 437         docstring const & arg)
 438 {
 439         CursorSlice i1 = cur.selBegin();
 440         CursorSlice i2 = cur.selEnd();
 441         if (!i1.inset().asInsetMath())
 442                 return;
 443         if (i1.idx() == i2.idx()) {
 444                 // the easy case where only one cell is selected
 445                 cur.handleNest(nest);
 446                 cur.insert(arg);
 447                 return;
 448         }
 449
 450         // multiple selected cells in a simple non-grid inset
 451         if (i1.asInsetMath()->nrows() == 0 || i1.asInsetMath()->ncols() == 0) {
 452                 for (idx_type i = i1.idx(); i <= i2.idx(); ++i) {
 453                         // select cell
 454                         cur.idx() = i;
 455                         cur.pos() = 0;
 456                         cur.resetAnchor();
 457                         cur.pos() = cur.lastpos();
 458                         cur.setSelection();
 459
 460                         // change font of cell
 461                         cur.handleNest(nest);
 462                         cur.insert(arg);
 463
 464                         // cur is in the font inset now. If the loop continues,
 465                         // we need to get outside again for the next cell
 466                         if (i + 1 <= i2.idx())
 467                                 cur.pop_back();
 468                 }
 469                 return;
 470         }
 471
 472         // the complicated case with multiple selected cells in a grid
 473         row_type r1, r2;
 474         col_type c1, c2;
 475         cap::region(i1, i2, r1, r2, c1, c2);
 476         for (row_type row = r1; row <= r2; ++row) {
 477                 for (col_type col = c1; col <= c2; ++col) {
 478                         // select cell
 479                         cur.idx() = i1.asInsetMath()->index(row, col);
 480                         cur.pos() = 0;
 481                         cur.resetAnchor();
 482                         cur.pos() = cur.lastpos();
 483                         cur.setSelection();
 484
 485                         //
 486                         cur.handleNest(nest);
 487                         cur.insert(arg);
 488
 489                         // cur is in the font inset now. If the loop continues,
 490                         // we need to get outside again for the next cell
 491                         if (col + 1 <= c2 || row + 1 <= r2)
 492                                 cur.pop_back();
 493                 }
 494         }
 495 }
 496
 497
 498 void InsetMathNest::handleFont2(Cursor & cur, docstring const & arg)
 499 {
 500         cur.recordUndoSelection();
 501         Font font;
 502         bool b;
 503         font.fromString(to_utf8(arg), b);
 504         if (font.fontInfo().color() != Color_inherit &&
 505             font.fontInfo().color() != Color_ignore)
 506                 handleNest(cur, MathAtom(new InsetMathColor(true, font.fontInfo().color())));
 507
 508         // FIXME: support other font changes here as well?
 509 }
 510
 511
 512 void InsetMathNest::doDispatch(Cursor & cur, FuncRequest & cmd)
 513 {
 514         //lyxerr << "InsetMathNest: request: " << cmd << endl;
 515
 516         Parse::flags parseflg = Parse::QUIET;
 517
 518         switch (cmd.action) {
 519
 520         case LFUN_CLIPBOARD_PASTE:
 521                 parseflg |= Parse::VERBATIM;
 522                 // fall through
 523         case LFUN_PASTE: {
 524                 if (cur.currentMode() == TEXT_MODE)
 525                         parseflg |= Parse::TEXTMODE;
 526                 cur.recordUndoSelection();
 527                 cur.message(_("Paste"));
 528                 replaceSelection(cur);
 529                 docstring topaste;
 530                 if (cmd.argument().empty() && !theClipboard().isInternal())
 531                         topaste = theClipboard().getAsText();
 532                 else {
 533                         size_t n = 0;
 534                         idocstringstream is(cmd.argument());
 535                         is >> n;
 536                         topaste = cap::selection(n);
 537                 }
 538                 cur.niceInsert(topaste, parseflg);
 539                 cur.clearSelection(); // bug 393
 540                 cur.finishUndo();
 541                 break;
 542         }
 543
 544         case LFUN_CUT:
 545                 cur.recordUndo();
 546                 cutSelection(cur, true, true);
 547                 cur.message(_("Cut"));
 548                 // Prevent stale position >= size crash
 549                 // Probably not necessary anymore, see eraseSelection (gb 2005-10-09)
 550                 cur.normalize();
 551                 break;
 552
 553         case LFUN_COPY:
 554                 copySelection(cur);
 555                 cur.message(_("Copy"));
 556                 break;
 557
 558         case LFUN_MOUSE_PRESS:
 559                 lfunMousePress(cur, cmd);
 560                 break;
 561
 562         case LFUN_MOUSE_MOTION:
 563                 lfunMouseMotion(cur, cmd);
 564                 break;
 565
 566         case LFUN_MOUSE_RELEASE:
 567                 lfunMouseRelease(cur, cmd);
 568                 break;
 569
 570         case LFUN_FINISHED_LEFT: // in math, left is backwards
 571         case LFUN_FINISHED_BACKWARD:
 572                 cur.bv().cursor() = cur;
 573                 break;
 574
 575         case LFUN_FINISHED_RIGHT: // in math, right is forward
 576         case LFUN_FINISHED_FORWARD:
 577                 ++cur.pos();
 578                 cur.bv().cursor() = cur;
 579                 break;
 580
 581         case LFUN_CHAR_RIGHT:
 582         case LFUN_CHAR_LEFT:
 583         case LFUN_CHAR_BACKWARD:
 584         case LFUN_CHAR_FORWARD:
 585                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 586         case LFUN_CHAR_RIGHT_SELECT:
 587         case LFUN_CHAR_LEFT_SELECT:
 588         case LFUN_CHAR_BACKWARD_SELECT:
 589         case LFUN_CHAR_FORWARD_SELECT: {
 590                 // are we in a selection?
 591                 bool select = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 592                                            || cmd.action == LFUN_CHAR_LEFT_SELECT
 593                                            || cmd.action == LFUN_CHAR_BACKWARD_SELECT
 594                                            || cmd.action == LFUN_CHAR_FORWARD_SELECT);
 595                 // are we moving forward or backwards?
 596                 // If the command was RIGHT or LEFT, then whether we're moving forward
 597                 // or backwards depends on the cursor movement mode (logical or visual):
 598                 //  * in visual mode, since math is always LTR, right -> forward,
 599                 //    left -> backwards
 600                 //  * in logical mode, the mapping is determined by the
 601                 //    reverseDirectionNeeded() function
 602
 603                 bool forward;
 604                 FuncCode finish_lfun;
 605
 606                 if (cmd.action == LFUN_CHAR_FORWARD
 607                                 || cmd.action == LFUN_CHAR_FORWARD_SELECT) {
 608                         forward = true;
 609                         finish_lfun = LFUN_FINISHED_FORWARD;
 610                 }
 611                 else if (cmd.action == LFUN_CHAR_BACKWARD
 612                                 || cmd.action == LFUN_CHAR_BACKWARD_SELECT) {
 613                         forward = false;
 614                         finish_lfun = LFUN_FINISHED_BACKWARD;
 615                 }
 616                 else {
 617                         bool right = (cmd.action == LFUN_CHAR_RIGHT_SELECT
 618                                                   || cmd.action == LFUN_CHAR_RIGHT);
 619                         if (lyxrc.visual_cursor || !reverseDirectionNeeded(cur))
 620                                 forward = right;
 621                         else
 622                                 forward = !right;
 623
 624                         if (right)
 625                                 finish_lfun = LFUN_FINISHED_RIGHT;
 626                         else
 627                                 finish_lfun = LFUN_FINISHED_LEFT;
 628                 }
 629                 // Now that we know exactly what we want to do, let's do it!
 630                 cur.selHandle(select);
 631                 cur.autocorrect() = false;
 632                 cur.clearTargetX();
 633                 cur.macroModeClose();
 634                 // try moving forward or backwards as necessary...
 635                 if (!(forward ? cursorMathForward(cur) : cursorMathBackward(cur))) {
 636                         // ... and if movement failed, then finish forward or backwards
 637                         // as necessary
 638                         cmd = FuncRequest(finish_lfun);
 639                         cur.undispatched();
 640                 }
 641                 break;
 642         }
 643
 644         case LFUN_DOWN:
 645         case LFUN_UP:
 646                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 647         case LFUN_DOWN_SELECT:
 648         case LFUN_UP_SELECT: {
 649                 // close active macro
 650                 if (cur.inMacroMode()) {
 651                         cur.macroModeClose();
 652                         break;
 653                 }
 654
 655                 // stop/start the selection
 656                 bool select = cmd.action == LFUN_DOWN_SELECT ||
 657                         cmd.action == LFUN_UP_SELECT;
 658                 cur.selHandle(select);
 659
 660                 // go up/down
 661                 bool up = cmd.action == LFUN_UP || cmd.action == LFUN_UP_SELECT;
 662                 bool successful = cur.upDownInMath(up);
 663                 if (successful)
 664                         break;
 665
 666                 if (cur.fixIfBroken())
 667                         // FIXME: Something bad happened. We pass the corrected Cursor
 668                         // instead of letting things go worse.
 669                         break;
 670
 671                 // We did not manage to move the cursor.
 672                 cur.undispatched();
 673                 break;
 674         }
 675
 676         case LFUN_MOUSE_DOUBLE:
 677         case LFUN_MOUSE_TRIPLE:
 678         case LFUN_WORD_SELECT:
 679                 cur.pos() = 0;
 680                 cur.idx() = 0;
 681                 cur.resetAnchor();
 682                 cur.setSelection(true);
 683                 cur.pos() = cur.lastpos();
 684                 cur.idx() = cur.lastidx();
 685                 break;
 686
 687         case LFUN_PARAGRAPH_UP:
 688         case LFUN_PARAGRAPH_DOWN:
 689                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 690         case LFUN_PARAGRAPH_UP_SELECT:
 691         case LFUN_PARAGRAPH_DOWN_SELECT:
 692                 break;
 693
 694         case LFUN_LINE_BEGIN:
 695         case LFUN_WORD_BACKWARD:
 696         case LFUN_WORD_LEFT:
 697                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 698         case LFUN_LINE_BEGIN_SELECT:
 699         case LFUN_WORD_BACKWARD_SELECT:
 700         case LFUN_WORD_LEFT_SELECT:
 701                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
 702                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
 703                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
 704                 cur.macroModeClose();
 705                 if (cur.pos() != 0) {
 706                         cur.pos() = 0;
 707                 } else if (cur.col() != 0) {
 708                         cur.idx() -= cur.col();
 709                         cur.pos() = 0;
 710                 } else if (cur.idx() != 0) {
 711                         cur.idx() = 0;
 712                         cur.pos() = 0;
 713                 } else {
 714                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
 715                         cur.undispatched();
 716                 }
 717                 break;
 718
 719         case LFUN_WORD_FORWARD:
 720         case LFUN_WORD_RIGHT:
 721         case LFUN_LINE_END:
 722                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 723         case LFUN_WORD_FORWARD_SELECT:
 724         case LFUN_WORD_RIGHT_SELECT:
 725         case LFUN_LINE_END_SELECT:
 726                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
 727                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
 728                                 cmd.action == LFUN_LINE_END_SELECT);
 729                 cur.macroModeClose();
 730                 cur.clearTargetX();
 731                 if (cur.pos() != cur.lastpos()) {
 732                         cur.pos() = cur.lastpos();
 733                 } else if (ncols() && (cur.col() != cur.lastcol())) {
 734                         cur.idx() = cur.idx() - cur.col() + cur.lastcol();
 735                         cur.pos() = cur.lastpos();
 736                 } else if (cur.idx() != cur.lastidx()) {
 737                         cur.idx() = cur.lastidx();
 738                         cur.pos() = cur.lastpos();
 739                 } else {
 740                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 741                         cur.undispatched();
 742                 }
 743                 break;
 744
 745         case LFUN_CELL_FORWARD:
 746                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 747                 cur.inset().idxNext(cur);
 748                 break;
 749
 750         case LFUN_CELL_BACKWARD:
 751                 cur.updateFlags(Update::Decoration | Update::FitCursor);
 752                 cur.inset().idxPrev(cur);
 753                 break;
 754
 755         case LFUN_WORD_DELETE_BACKWARD:
 756         case LFUN_CHAR_DELETE_BACKWARD:
 757                 if (cur.pos() == 0)
 758                         // May affect external cell:
 759                         cur.recordUndoInset();
 760                 else
 761                         cur.recordUndoSelection();
 762                 // if the inset can not be removed from within, delete it
 763                 if (!cur.backspace()) {
 764                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 765                         cur.innerText()->dispatch(cur, cmd);
 766                 }
 767                 break;
 768
 769         case LFUN_WORD_DELETE_FORWARD:
 770         case LFUN_CHAR_DELETE_FORWARD:
 771                 if (cur.pos() == cur.lastpos())
 772                         // May affect external cell:
 773                         cur.recordUndoInset();
 774                 else
 775                         cur.recordUndoSelection();
 776                 // if the inset can not be removed from within, delete it
 777                 if (!cur.erase()) {
 778                         FuncRequest cmd = FuncRequest(LFUN_CHAR_DELETE_FORWARD);
 779                         cur.innerText()->dispatch(cur, cmd);
 780                 }
 781                 break;
 782
 783         case LFUN_ESCAPE:
 784                 if (cur.selection())
 785                         cur.clearSelection();
 786                 else  {
 787                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 788                         cur.undispatched();
 789                 }
 790                 break;
 791
 792         // 'Locks' the math inset. A 'locked' math inset behaves as a unit
 793         // that is traversed by a single <CursorLeft>/<CursorRight>.
 794         case LFUN_INSET_TOGGLE:
 795                 cur.recordUndo();
 796                 lock(!lock());
 797                 cur.popForward();
 798                 break;
 799
 800         case LFUN_SELF_INSERT:
 801                 if (cmd.argument().size() != 1) {
 802                         cur.recordUndoSelection();
 803                         docstring const arg = cmd.argument();
 804                         if (!interpretString(cur, arg))
 805                                 cur.insert(arg);
 806                         break;
 807                 }
 808                 // Don't record undo steps if we are in macro mode and
 809                 // cmd.argument is the next character of the macro name.
 810                 // Otherwise we'll get an invalid cursor if we undo after
 811                 // the macro was finished and the macro is a known command,
 812                 // e.g. sqrt. Cursor::macroModeClose replaces in this case
 813                 // the InsetMathUnknown with name "frac" by an empty
 814                 // InsetMathFrac -> a pos value > 0 is invalid.
 815                 // A side effect is that an undo before the macro is finished
 816                 // undoes the complete macro, not only the last character.
 817                 if (!cur.inMacroMode())
 818                         cur.recordUndoSelection();
 819
 820                 // spacial handling of space. If we insert an inset
 821                 // via macro mode, we want to put the cursor inside it
 822                 // if relevant. Think typing "\frac<space>".
 823                 if (cmd.argument()[0] == ' '
 824                     && cur.inMacroMode() && cur.macroName() != "\\"
 825                     && cur.macroModeClose()) {
 826                         MathAtom const atom = cur.prevAtom();
 827                         if (atom->asNestInset() && atom->isActive()) {
 828                                 cur.posBackward();
 829                                 cur.pushBackward(*cur.nextInset());
 830                         }
 831                 } else if (!interpretChar(cur, cmd.argument()[0])) {
 832                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
 833                         cur.undispatched();
 834                 }
 835                 break;
 836
 837         //case LFUN_SERVER_GET_XY:
 838         //      sprintf(dispatch_buffer, "%d %d",);
 839         //      break;
 840
 841         case LFUN_SERVER_SET_XY: {
 842                 lyxerr << "LFUN_SERVER_SET_XY broken!" << endl;
 843                 int x = 0;
 844                 int y = 0;
 845                 istringstream is(to_utf8(cmd.argument()));
 846                 is >> x >> y;
 847                 cur.setScreenPos(x, y);
 848                 break;
 849         }
 850
 851         // Special casing for superscript in case of LyX handling
 852         // dead-keys:
 853         case LFUN_ACCENT_CIRCUMFLEX:
 854                 if (cmd.argument().empty()) {
 855                         // do superscript if LyX handles
 856                         // deadkeys
 857                         cur.recordUndoSelection();
 858                         script(cur, true, grabAndEraseSelection(cur));
 859                 }
 860                 break;
 861
 862         case LFUN_ACCENT_UMLAUT:
 863         case LFUN_ACCENT_ACUTE:
 864         case LFUN_ACCENT_GRAVE:
 865         case LFUN_ACCENT_BREVE:
 866         case LFUN_ACCENT_DOT:
 867         case LFUN_ACCENT_MACRON:
 868         case LFUN_ACCENT_CARON:
 869         case LFUN_ACCENT_TILDE:
 870         case LFUN_ACCENT_CEDILLA:
 871         case LFUN_ACCENT_CIRCLE:
 872         case LFUN_ACCENT_UNDERDOT:
 873         case LFUN_ACCENT_TIE:
 874         case LFUN_ACCENT_OGONEK:
 875         case LFUN_ACCENT_HUNGARIAN_UMLAUT:
 876                 break;
 877
 878         //  Math fonts
 879         case LFUN_TEXTSTYLE_APPLY:
 880         case LFUN_TEXTSTYLE_UPDATE:
 881                 handleFont2(cur, cmd.argument());
 882                 break;
 883
 884         case LFUN_FONT_BOLD:
 885                 if (currentMode() == TEXT_MODE)
 886                         handleFont(cur, cmd.argument(), "textbf");
 887                 else
 888                         handleFont(cur, cmd.argument(), "mathbf");
 889                 break;
 890         case LFUN_FONT_BOLDSYMBOL:
 891                 if (currentMode() == TEXT_MODE)
 892                         handleFont(cur, cmd.argument(), "textbf");
 893                 else
 894                         handleFont(cur, cmd.argument(), "boldsymbol");
 895                 break;
 896         case LFUN_FONT_SANS:
 897                 if (currentMode() == TEXT_MODE)
 898                         handleFont(cur, cmd.argument(), "textsf");
 899                 else
 900                         handleFont(cur, cmd.argument(), "mathsf");
 901                 break;
 902         case LFUN_FONT_EMPH:
 903                 if (currentMode() == TEXT_MODE)
 904                         handleFont(cur, cmd.argument(), "emph");
 905                 else
 906                         handleFont(cur, cmd.argument(), "mathcal");
 907                 break;
 908         case LFUN_FONT_ROMAN:
 909                 if (currentMode() == TEXT_MODE)
 910                         handleFont(cur, cmd.argument(), "textrm");
 911                 else
 912                         handleFont(cur, cmd.argument(), "mathrm");
 913                 break;
 914         case LFUN_FONT_TYPEWRITER:
 915                 if (currentMode() == TEXT_MODE)
 916                         handleFont(cur, cmd.argument(), "texttt");
 917                 else
 918                         handleFont(cur, cmd.argument(), "mathtt");
 919                 break;
 920         case LFUN_FONT_FRAK:
 921                 handleFont(cur, cmd.argument(), "mathfrak");
 922                 break;
 923         case LFUN_FONT_ITAL:
 924                 if (currentMode() == TEXT_MODE)
 925                         handleFont(cur, cmd.argument(), "textit");
 926                 else
 927                         handleFont(cur, cmd.argument(), "mathit");
 928                 break;
 929         case LFUN_FONT_NOUN:
 930                 if (currentMode() == TEXT_MODE)
 931                         // FIXME: should be "noun"
 932                         handleFont(cur, cmd.argument(), "textsc");
 933                 else
 934                         handleFont(cur, cmd.argument(), "mathbb");
 935                 break;
 936         case LFUN_FONT_DEFAULT:
 937                 handleFont(cur, cmd.argument(), "textnormal");
 938                 break;
 939
 940         case LFUN_MATH_MODE: {
 941 #if 1
 942                 // ignore math-mode on when already in math mode
 943                 if (currentMode() == Inset::MATH_MODE && cmd.argument() == "on")
 944                         break;
 945                 cur.recordUndoSelection();
 946                 cur.macroModeClose();
 947                 docstring const save_selection = grabAndEraseSelection(cur);
 948                 selClearOrDel(cur);
 949                 //cur.plainInsert(MathAtom(new InsetMathMBox(cur.bv())));
 950                 cur.plainInsert(MathAtom(new InsetMathBox(from_ascii("mbox"))));
 951                 cur.posBackward();
 952                 cur.pushBackward(*cur.nextInset());
 953                 cur.niceInsert(save_selection);
 954 #else
 955                 if (currentMode() == Inset::TEXT_MODE) {
 956                         cur.recordUndoSelection();
 957                         cur.niceInsert(MathAtom(new InsetMathHull("simple")));
 958                         cur.message(_("create new math text environment ($...$)"));
 959                 } else {
 960                         handleFont(cur, cmd.argument(), "textrm");
 961                         cur.message(_("entered math text mode (textrm)"));
 962                 }
 963 #endif
 964                 break;
 965         }
 966
 967         case LFUN_MATH_SIZE: {
 968                 FuncRequest fr = FuncRequest(LFUN_MATH_INSERT, cmd.argument());
 969                 doDispatch(cur, fr);
 970                 break;
 971         }
 972
 973         case LFUN_MATH_MATRIX: {
 974                 cur.recordUndo();
 975                 unsigned int m = 1;
 976                 unsigned int n = 1;
 977                 docstring v_align;
 978                 docstring h_align;
 979                 idocstringstream is(cmd.argument());
 980                 is >> m >> n >> v_align >> h_align;
 981                 if (m < 1)
 982                         m = 1;
 983                 if (n < 1)
 984                         n = 1;
 985                 v_align += 'c';
 986                 cur.niceInsert(
 987                         MathAtom(new InsetMathArray(from_ascii("array"), m, n, (char)v_align[0], h_align)));
 988                 break;
 989         }
 990
 991         case LFUN_MATH_DELIM: {
 992                 docstring ls;
 993                 docstring rs = split(cmd.argument(), ls, ' ');
 994                 // Reasonable default values
 995                 if (ls.empty())
 996                         ls = '(';
 997                 if (rs.empty())
 998                         rs = ')';
 999                 cur.recordUndo();
1000                 cur.handleNest(MathAtom(new InsetMathDelim(ls, rs)));
1001                 break;
1002         }
1003
1004         case LFUN_MATH_BIGDELIM: {
1005                 docstring const lname  = from_utf8(cmd.getArg(0));
1006                 docstring const ldelim = from_utf8(cmd.getArg(1));
1007                 docstring const rname  = from_utf8(cmd.getArg(2));
1008                 docstring const rdelim = from_utf8(cmd.getArg(3));
1009                 latexkeys const * l = in_word_set(lname);
1010                 bool const have_l = l && l->inset == "big" &&
1011                                     InsetMathBig::isBigInsetDelim(ldelim);
1012                 l = in_word_set(rname);
1013                 bool const have_r = l && l->inset == "big" &&
1014                                     InsetMathBig::isBigInsetDelim(rdelim);
1015                 // We mimic LFUN_MATH_DELIM in case we have an empty left
1016                 // or right delimiter.
1017                 if (have_l || have_r) {
1018                         cur.recordUndo();
1019                         docstring const selection = grabAndEraseSelection(cur);
1020                         selClearOrDel(cur);
1021                         if (have_l)
1022                                 cur.insert(MathAtom(new InsetMathBig(lname,
1023                                                                 ldelim)));
1024                         cur.niceInsert(selection);
1025                         if (have_r)
1026                                 cur.insert(MathAtom(new InsetMathBig(rname,
1027                                                                 rdelim)));
1028                 }
1029                 // Don't call cur.undispatched() if we did nothing, this would
1030                 // lead to infinite recursion via Text::dispatch().
1031                 break;
1032         }
1033
1034         case LFUN_SPACE_INSERT:
1035                 cur.recordUndoSelection();
1036                 cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
1037                 break;
1038
1039         case LFUN_MATH_SPACE:
1040                 cur.recordUndoSelection();
1041                 if (cmd.argument().empty())
1042                         cur.insert(MathAtom(new InsetMathSpace(from_ascii(","))));
1043                 else
1044                         cur.insert(MathAtom(new InsetMathSpace(cmd.argument())));
1045                 break;
1046
1047         case LFUN_ERT_INSERT:
1048                 // interpret this as if a backslash was typed
1049                 cur.recordUndo();
1050                 interpretChar(cur, '\\');
1051                 break;
1052
1053         case LFUN_MATH_SUBSCRIPT:
1054                 // interpret this as if a _ was typed
1055                 cur.recordUndoSelection();
1056                 interpretChar(cur, '_');
1057                 break;
1058
1059         case LFUN_MATH_SUPERSCRIPT:
1060                 // interpret this as if a ^ was typed
1061                 cur.recordUndoSelection();
1062                 interpretChar(cur, '^');
1063                 break;
1064
1065         case LFUN_MATH_MACRO_FOLD:
1066         case LFUN_MATH_MACRO_UNFOLD: {
1067                 Cursor it = cur;
1068                 bool fold = cmd.action == LFUN_MATH_MACRO_FOLD;
1069                 bool found = findMacroToFoldUnfold(it, fold);
1070                 if (found) {
1071                         MathMacro * macro = it.nextInset()->asInsetMath()->asMacro();
1072                         cur.recordUndoInset();
1073                         if (fold)
1074                                 macro->fold(cur);
1075                         else
1076                                 macro->unfold(cur);
1077                 }
1078                 break;
1079         }
1080
1081         case LFUN_QUOTE_INSERT:
1082                 // interpret this as if a straight " was typed
1083                 cur.recordUndoSelection();
1084                 interpretChar(cur, '\"');
1085                 break;
1086
1087 // FIXME: We probably should swap parts of "math-insert" and "self-insert"
1088 // handling such that "self-insert" works on "arbitrary stuff" too, and
1089 // math-insert only handles special math things like "matrix".
1090         case LFUN_MATH_INSERT: {
1091                 cur.recordUndoSelection();
1092                 if (cmd.argument() == "^" || cmd.argument() == "_")
1093                         interpretChar(cur, cmd.argument()[0]);
1094                 else {
1095                         MathData ar;
1096                         asArray(cmd.argument(), ar);
1097                         if (ar.size() == 1 && ar[0]->asNestInset()
1098                                         && ar[0]->asNestInset()->nargs() > 1)
1099                                 handleNest(cur, ar[0]);
1100                         else
1101                                 cur.niceInsert(cmd.argument());
1102                 }
1103                 break;
1104                 }
1105
1106         case LFUN_DIALOG_SHOW_NEW_INSET: {
1107                 docstring const & name = cmd.argument();
1108                 string data;
1109                 if (name == "ref") {
1110                         InsetMathRef tmp(name);
1111                         data = tmp.createDialogStr(to_utf8(name));
1112                 }
1113                 cur.bv().showDialog(to_utf8(name), data);
1114                 break;
1115         }
1116
1117         case LFUN_INSET_INSERT: {
1118                 MathData ar;
1119                 if (createInsetMath_fromDialogStr(cmd.argument(), ar)) {
1120                         cur.recordUndoSelection();
1121                         cur.insert(ar);
1122                 } else
1123                         cur.undispatched();
1124                 break;
1125         }
1126         case LFUN_INSET_DISSOLVE:
1127                 if (!asHullInset()) {
1128                         cur.recordUndoInset();
1129                         cur.pullArg();
1130                 }
1131                 break;
1132
1133         default:
1134                 InsetMath::doDispatch(cur, cmd);
1135                 break;
1136         }
1137 }
1138
1139
1140 bool InsetMathNest::findMacroToFoldUnfold(Cursor & it, bool fold) const {
1141         // look for macro to open/close, but stay in mathed
1142         for (; !it.empty(); it.pop_back()) {
1143
1144                 // go backward through the current cell
1145                 Inset * inset = it.nextInset();
1146                 while (inset && inset->asInsetMath()) {
1147                         MathMacro * macro = inset->asInsetMath()->asMacro();
1148                         if (macro) {
1149                                 // found the an macro to open/close?
1150                                 if (macro->folded() != fold)
1151                                         return true;
1152
1153                                 // Wrong folding state.
1154                                 // If this was the first we see in this slice, look further left,
1155                                 // otherwise go up.
1156                                 if (inset != it.nextInset())
1157                                         break;
1158                         }
1159
1160                         // go up if this was the left most position
1161                         if (it.pos() == 0)
1162                                 break;
1163
1164                         // go left
1165                         it.pos()--;
1166                         inset = it.nextInset();
1167                 }
1168         }
1169
1170         return false;
1171 }
1172
1173
1174 bool InsetMathNest::getStatus(Cursor & cur, FuncRequest const & cmd,
1175                 FuncStatus & flag) const
1176 {
1177         // the font related toggles
1178         //string tc = "mathnormal";
1179         bool ret = true;
1180         string const arg = to_utf8(cmd.argument());
1181         switch (cmd.action) {
1182         case LFUN_TABULAR_FEATURE:
1183                 flag.setEnabled(false);
1184                 break;
1185 #if 0
1186         case LFUN_TABULAR_FEATURE:
1187                 // FIXME: check temporarily disabled
1188                 // valign code
1189                 char align = mathcursor::valign();
1190                 if (align == '\0') {
1191                         enable = false;
1192                         break;
1193                 }
1194                 if (cmd.argument().empty()) {
1195                         flag.clear();
1196                         break;
1197                 }
1198                 if (!contains("tcb", cmd.argument()[0])) {
1199                         enable = false;
1200                         break;
1201                 }
1202                 flag.setOnOff(cmd.argument()[0] == align);
1203                 break;
1204 #endif
1205         /// We have to handle them since 1.4 blocks all unhandled actions
1206         case LFUN_FONT_ITAL:
1207         case LFUN_FONT_BOLD:
1208         case LFUN_FONT_BOLDSYMBOL:
1209         case LFUN_FONT_SANS:
1210         case LFUN_FONT_EMPH:
1211         case LFUN_FONT_TYPEWRITER:
1212         case LFUN_FONT_NOUN:
1213         case LFUN_FONT_ROMAN:
1214         case LFUN_FONT_DEFAULT:
1215                 flag.setEnabled(true);
1216                 break;
1217         case LFUN_MATH_MUTATE:
1218                 //flag.setOnOff(mathcursor::formula()->hullType() == to_utf8(cmd.argument()));
1219                 flag.setOnOff(false);
1220                 break;
1221
1222         // we just need to be in math mode to enable that
1223         case LFUN_MATH_SIZE:
1224         case LFUN_MATH_SPACE:
1225         case LFUN_MATH_LIMITS:
1226         case LFUN_MATH_EXTERN:
1227                 flag.setEnabled(true);
1228                 break;
1229
1230         case LFUN_FONT_FRAK:
1231                 flag.setEnabled(currentMode() != TEXT_MODE);
1232                 break;
1233
1234         case LFUN_MATH_INSERT: {
1235                 bool const textarg =
1236                         arg == "\\textbf"   || arg == "\\textsf" ||
1237                         arg == "\\textrm"   || arg == "\\textmd" ||
1238                         arg == "\\textit"   || arg == "\\textsc" ||
1239                         arg == "\\textsl"   || arg == "\\textup" ||
1240                         arg == "\\texttt"   || arg == "\\textbb" ||
1241                         arg == "\\textnormal";
1242                 flag.setEnabled(currentMode() != TEXT_MODE || textarg);
1243                 break;
1244         }
1245
1246         case LFUN_MATH_MATRIX:
1247                 flag.setEnabled(currentMode() == MATH_MODE);
1248                 break;
1249
1250         case LFUN_INSET_INSERT: {
1251                 // Don't test createMathInset_fromDialogStr(), since
1252                 // getStatus is not called with a valid reference and the
1253                 // dialog would not be applyable.
1254                 string const name = cmd.getArg(0);
1255                 flag.setEnabled(name == "ref");
1256                 break;
1257         }
1258
1259         case LFUN_MATH_DELIM:
1260         case LFUN_MATH_BIGDELIM:
1261                 // Don't do this with multi-cell selections
1262                 flag.setEnabled(cur.selBegin().idx() == cur.selEnd().idx());
1263                 break;
1264
1265         case LFUN_MATH_MACRO_FOLD:
1266         case LFUN_MATH_MACRO_UNFOLD: {
1267                 Cursor it = cur;
1268                 bool found = findMacroToFoldUnfold(it, cmd.action == LFUN_MATH_MACRO_FOLD);
1269                 flag.setEnabled(found);
1270                 break;
1271         }
1272
1273         case LFUN_SPECIALCHAR_INSERT:
1274                 // FIXME: These would probably make sense in math-text mode
1275                 flag.setEnabled(false);
1276                 break;
1277
1278         case LFUN_INSET_DISSOLVE:
1279                 flag.setEnabled(!asHullInset());
1280                 break;
1281
1282         default:
1283                 ret = false;
1284                 break;
1285         }
1286         return ret;
1287 }
1288
1289
1290 void InsetMathNest::edit(Cursor & cur, bool front, EntryDirection entry_from)
1291 {
1292         cur.push(*this);
1293         bool enter_front = (entry_from == Inset::ENTRY_DIRECTION_RIGHT ||
1294                 (entry_from == Inset::ENTRY_DIRECTION_IGNORE && front));
1295         cur.idx() = enter_front ? 0 : cur.lastidx();
1296         cur.pos() = enter_front ? 0 : cur.lastpos();
1297         cur.resetAnchor();
1298         //lyxerr << "InsetMathNest::edit, cur:\n" << cur << endl;
1299 }
1300
1301
1302 Inset * InsetMathNest::editXY(Cursor & cur, int x, int y)
1303 {
1304         int idx_min = 0;
1305         int dist_min = 1000000;
1306         for (idx_type i = 0, n = nargs(); i != n; ++i) {
1307                 int const d = cell(i).dist(cur.bv(), x, y);
1308                 if (d < dist_min) {
1309                         dist_min = d;
1310                         idx_min = i;
1311                 }
1312         }
1313         MathData & ar = cell(idx_min);
1314         cur.push(*this);
1315         cur.idx() = idx_min;
1316         cur.pos() = ar.x2pos(&cur.bv(), x - ar.xo(cur.bv()));
1317
1318         //lyxerr << "found cell : " << idx_min << " pos: " << cur.pos() << endl;
1319         if (dist_min == 0) {
1320                 // hit inside cell
1321                 for (pos_type i = 0, n = ar.size(); i < n; ++i)
1322                         if (ar[i]->covers(cur.bv(), x, y))
1323                                 return ar[i].nucleus()->editXY(cur, x, y);
1324         }
1325         return this;
1326 }
1327
1328
1329 void InsetMathNest::lfunMousePress(Cursor & cur, FuncRequest & cmd)
1330 {
1331         //lyxerr << "## lfunMousePress: buttons: " << cmd.button() << endl;
1332         BufferView & bv = cur.bv();
1333         bool do_selection = cmd.button() == mouse_button::button1
1334                 && cmd.argument() == "region-select";
1335         bv.mouseSetCursor(cur, do_selection);
1336         if (cmd.button() == mouse_button::button1) {
1337                 //lyxerr << "## lfunMousePress: setting cursor to: " << cur << endl;
1338                 // Update the cursor update flags as needed:
1339                 //
1340                 // Update::Decoration: tells to update the decoration
1341                 //                     (visual box corners that define
1342                 //                     the inset)/
1343                 // Update::FitCursor: adjust the screen to the cursor
1344                 //                    position if needed
1345                 // cur.result().update(): don't overwrite previously set flags.
1346                 cur.updateFlags(Update::Decoration | Update::FitCursor
1347                                 | cur.result().update());
1348         } else if (cmd.button() == mouse_button::button2) {
1349                 if (cap::selection()) {
1350                         // See comment in Text::dispatch why we do this
1351                         cap::copySelectionToStack();
1352                         cmd = FuncRequest(LFUN_PASTE, "0");
1353                         doDispatch(bv.cursor(), cmd);
1354                 } else {
1355                         MathData ar;
1356                         asArray(theSelection().get(), ar);
1357                         bv.cursor().insert(ar);
1358                 }
1359         }
1360 }
1361
1362
1363 void InsetMathNest::lfunMouseMotion(Cursor & cur, FuncRequest & cmd)
1364 {
1365         // only select with button 1
1366         if (cmd.button() == mouse_button::button1) {
1367                 Cursor & bvcur = cur.bv().cursor();
1368                 if (bvcur.anchor_.hasPart(cur)) {
1369                         //lyxerr << "## lfunMouseMotion: cursor: " << cur << endl;
1370                         bvcur.setCursor(cur);
1371                         bvcur.setSelection(true);
1372                         //lyxerr << "MOTION " << bvcur << endl;
1373                 } else
1374                         cur.undispatched();
1375         }
1376 }
1377
1378
1379 void InsetMathNest::lfunMouseRelease(Cursor & cur, FuncRequest & cmd)
1380 {
1381         //lyxerr << "## lfunMouseRelease: buttons: " << cmd.button() << endl;
1382
1383         if (cmd.button() == mouse_button::button1) {
1384                 if (!cur.selection())
1385                         cur.noUpdate();
1386                 else {
1387                         Cursor & bvcur = cur.bv().cursor();
1388                         bvcur.setSelection(true);
1389                 }
1390                 return;
1391         }
1392
1393         cur.undispatched();
1394 }
1395
1396
1397 bool InsetMathNest::interpretChar(Cursor & cur, char_type c)
1398 {
1399         //lyxerr << "interpret 2: '" << c << "'" << endl;
1400         docstring save_selection;
1401         if (c == '^' || c == '_')
1402                 save_selection = grabAndEraseSelection(cur);
1403
1404         cur.clearTargetX();
1405
1406         // handle macroMode
1407         if (cur.inMacroMode()) {
1408                 docstring name = cur.macroName();
1409
1410                 /// are we currently typing '#1' or '#2' or...?
1411                 if (name == "\\#") {
1412                         cur.backspace();
1413                         int n = c - '0';
1414                         if (n >= 1 && n <= 9)
1415                                 cur.insert(new MathMacroArgument(n));
1416                         return true;
1417                 }
1418
1419                 // do not finish macro for known * commands
1420                 MathWordList const & mwl = mathedWordList();
1421                 bool star_macro = c == '*'
1422                         && (mwl.find(name.substr(1) + "*") != mwl.end()
1423                             || cur.buffer().getMacro(name.substr(1) + "*", cur, true));
1424                 if (isAlphaASCII(c) || star_macro) {
1425                         cur.activeMacro()->setName(name + docstring(1, c));
1426                         return true;
1427                 }
1428
1429                 // handle 'special char' macros
1430                 if (name == "\\") {
1431                         // remove the '\\'
1432                         if (c == '\\') {
1433                                 cur.backspace();
1434                                 if (currentMode() == InsetMath::TEXT_MODE)
1435                                         cur.niceInsert(createInsetMath("textbackslash"));
1436                                 else
1437                                         cur.niceInsert(createInsetMath("backslash"));
1438                         } else if (c == '{') {
1439                                 cur.backspace();
1440                                 cur.niceInsert(MathAtom(new InsetMathBrace));
1441                         } else if (c == '%') {
1442                                 cur.backspace();
1443                                 cur.niceInsert(MathAtom(new InsetMathComment));
1444                         } else if (c == '#') {
1445                                 LASSERT(cur.activeMacro(), /**/);
1446                                 cur.activeMacro()->setName(name + docstring(1, c));
1447                         } else {
1448                                 cur.backspace();
1449                                 cur.niceInsert(createInsetMath(docstring(1, c)));
1450                         }
1451                         return true;
1452                 }
1453
1454                 // One character big delimiters. The others are handled in
1455                 // interpretString().
1456                 latexkeys const * l = in_word_set(name.substr(1));
1457                 if (name[0] == '\\' && l && l->inset == "big") {
1458                         docstring delim;
1459                         switch (c) {
1460                         case '{':
1461                                 delim = from_ascii("\\{");
1462                                 break;
1463                         case '}':
1464                                 delim = from_ascii("\\}");
1465                                 break;
1466                         default:
1467                                 delim = docstring(1, c);
1468                                 break;
1469                         }
1470                         if (InsetMathBig::isBigInsetDelim(delim)) {
1471                                 // name + delim ared a valid InsetMathBig.
1472                                 // We can't use cur.macroModeClose() because
1473                                 // it does not handle delim.
1474                                 InsetMathUnknown * p = cur.activeMacro();
1475                                 p->finalize();
1476                                 --cur.pos();
1477                                 cur.cell().erase(cur.pos());
1478                                 cur.plainInsert(MathAtom(
1479                                         new InsetMathBig(name.substr(1), delim)));
1480                                 return true;
1481                         }
1482                 }
1483
1484                 // leave macro mode and try again if necessary
1485                 cur.macroModeClose();
1486                 if (c == '{')
1487                         cur.niceInsert(MathAtom(new InsetMathBrace));
1488                 else if (c != ' ')
1489                         interpretChar(cur, c);
1490                 return true;
1491         }
1492
1493         // This is annoying as one has to press <space> far too often.
1494         // Disable it.
1495
1496 #if 0
1497                 // leave autocorrect mode if necessary
1498                 if (autocorrect() && c == ' ') {
1499                         autocorrect() = false;
1500                         return true;
1501                 }
1502 #endif
1503
1504         // just clear selection on pressing the space bar
1505         if (cur.selection() && c == ' ') {
1506                 cur.setSelection(false);
1507                 return true;
1508         }
1509
1510         if (c == '\\') {
1511                 //lyxerr << "starting with macro" << endl;
1512                 bool reduced = cap::reduceSelectionToOneCell(cur);
1513                 if (reduced || !cur.selection()) {
1514                         docstring const safe = cap::grabAndEraseSelection(cur);
1515                         cur.insert(MathAtom(new InsetMathUnknown(from_ascii("\\"), safe, false)));
1516                 }
1517                 return true;
1518         }
1519
1520         selClearOrDel(cur);
1521
1522         if (c == '\n') {
1523                 if (currentMode() == InsetMath::TEXT_MODE)
1524                         cur.insert(c);
1525                 return true;
1526         }
1527
1528         if (c == ' ') {
1529                 if (currentMode() == InsetMath::TEXT_MODE) {
1530                         // insert spaces in text mode,
1531                         // but suppress direct insertion of two spaces in a row
1532                         // the still allows typing  '<space>a<space>' and deleting the 'a', but
1533                         // it is better than nothing...
1534                         if (!cur.pos() != 0 || cur.prevAtom()->getChar() != ' ') {
1535                                 cur.insert(c);
1536                                 // FIXME: we have to enable full redraw here because of the
1537                                 // visual box corners that define the inset. If we know for
1538                                 // sure that we stay within the same cell we can optimize for
1539                                 // that using:
1540                                 //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1541                         }
1542                         return true;
1543                 }
1544                 if (cur.pos() != 0 && cur.prevAtom()->asSpaceInset()) {
1545                         cur.prevAtom().nucleus()->asSpaceInset()->incSpace();
1546                         // FIXME: we have to enable full redraw here because of the
1547                         // visual box corners that define the inset. If we know for
1548                         // sure that we stay within the same cell we can optimize for
1549                         // that using:
1550                         //cur.updateFlags(Update::SinglePar | Update::FitCursor);
1551                         return true;
1552                 }
1553
1554                 if (cur.popForward()) {
1555                         // FIXME: we have to enable full redraw here because of the
1556                         // visual box corners that define the inset. If we know for
1557                         // sure that we stay within the same cell we can optimize for
1558                         // that using:
1559                         //cur.updateFlags(Update::FitCursor);
1560                         return true;
1561                 }
1562
1563                 // if we are at the very end, leave the formula
1564                 return cur.pos() != cur.lastpos();
1565         }
1566
1567         // These shouldn't work in text mode:
1568         if (currentMode() != InsetMath::TEXT_MODE) {
1569                 if (c == '_') {
1570                         script(cur, false, save_selection);
1571                         return true;
1572                 }
1573                 if (c == '^') {
1574                         script(cur, true, save_selection);
1575                         return true;
1576                 }
1577                 if (c == '~') {
1578                         cur.niceInsert(createInsetMath("sim"));
1579                         return true;
1580                 }
1581         }
1582
1583         if (c == '{' || c == '}' || c == '&' || c == '$' || c == '#' ||
1584             c == '%' || c == '_' || c == '^') {
1585                 cur.niceInsert(createInsetMath(docstring(1, c)));
1586                 return true;
1587         }
1588
1589
1590         // try auto-correction
1591         //if (autocorrect() && hasPrevAtom() && math_autocorrect(prevAtom(), c))
1592         //      return true;
1593
1594         // no special circumstances, so insert the character without any fuss
1595         cur.insert(c);
1596         cur.autocorrect() = true;
1597         return true;
1598 }
1599
1600
1601 bool InsetMathNest::interpretString(Cursor & cur, docstring const & str)
1602 {
1603         // Create a InsetMathBig from cur.cell()[cur.pos() - 1] and t if
1604         // possible
1605         if (!cur.empty() && cur.pos() > 0 &&
1606             cur.cell()[cur.pos() - 1]->asUnknownInset()) {
1607                 if (InsetMathBig::isBigInsetDelim(str)) {
1608                         docstring prev = asString(cur.cell()[cur.pos() - 1]);
1609                         if (prev[0] == '\\') {
1610                                 prev = prev.substr(1);
1611                                 latexkeys const * l = in_word_set(prev);
1612                                 if (l && l->inset == "big") {
1613                                         cur.cell()[cur.pos() - 1] =
1614                                                 MathAtom(new InsetMathBig(prev, str));
1615                                         return true;
1616                                 }
1617                         }
1618                 }
1619         }
1620         return false;
1621 }
1622
1623
1624 bool InsetMathNest::script(Cursor & cur, bool up)
1625 {
1626         return script(cur, up, docstring());
1627 }
1628
1629
1630 bool InsetMathNest::script(Cursor & cur, bool up,
1631                 docstring const & save_selection)
1632 {
1633         // Hack to get \^ and \_ working
1634         //lyxerr << "handling script: up: " << up << endl;
1635         if (cur.inMacroMode() && cur.macroName() == "\\") {
1636                 if (up)
1637                         cur.niceInsert(createInsetMath("mathcircumflex"));
1638                 else
1639                         interpretChar(cur, '_');
1640                 return true;
1641         }
1642
1643         cur.macroModeClose();
1644         if (asScriptInset() && cur.idx() == 0) {
1645                 // we are in a nucleus of a script inset, move to _our_ script
1646                 InsetMathScript * inset = asScriptInset();
1647                 //lyxerr << " going to cell " << inset->idxOfScript(up) << endl;
1648                 inset->ensure(up);
1649                 cur.idx() = inset->idxOfScript(up);
1650                 cur.pos() = 0;
1651         } else if (cur.pos() != 0 && cur.prevAtom()->asScriptInset()) {
1652                 --cur.pos();
1653                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1654                 cur.push(*inset);
1655                 inset->ensure(up);
1656                 cur.idx() = inset->idxOfScript(up);
1657                 cur.pos() = cur.lastpos();
1658         } else {
1659                 // convert the thing to our left to a scriptinset or create a new
1660                 // one if in the very first position of the array
1661                 if (cur.pos() == 0) {
1662                         //lyxerr << "new scriptinset" << endl;
1663                         cur.insert(new InsetMathScript(up));
1664                 } else {
1665                         //lyxerr << "converting prev atom " << endl;
1666                         cur.prevAtom() = MathAtom(new InsetMathScript(cur.prevAtom(), up));
1667                 }
1668                 --cur.pos();
1669                 InsetMathScript * inset = cur.nextAtom().nucleus()->asScriptInset();
1670                 // See comment in MathParser.cpp for special handling of {}-bases
1671
1672                 cur.push(*inset);
1673                 cur.idx() = 1;
1674                 cur.pos() = 0;
1675         }
1676         //lyxerr << "inserting selection 1:\n" << save_selection << endl;
1677         cur.niceInsert(save_selection);
1678         cur.resetAnchor();
1679         //lyxerr << "inserting selection 2:\n" << save_selection << endl;
1680         return true;
1681 }
1682
1683
1684 bool InsetMathNest::completionSupported(Cursor const & cur) const
1685 {
1686         return cur.inMacroMode();
1687 }
1688
1689
1690 bool InsetMathNest::inlineCompletionSupported(Cursor const & cur) const
1691 {
1692         return cur.inMacroMode();
1693 }
1694
1695
1696 bool InsetMathNest::automaticInlineCompletion() const
1697 {
1698         return lyxrc.completion_inline_math;
1699 }
1700
1701
1702 bool InsetMathNest::automaticPopupCompletion() const
1703 {
1704         return lyxrc.completion_popup_math;
1705 }
1706
1707
1708 CompletionList const *
1709 InsetMathNest::createCompletionList(Cursor const & cur) const
1710 {
1711         if (!cur.inMacroMode())
1712                 return 0;
1713
1714         return new MathCompletionList(cur);
1715 }
1716
1717
1718 docstring InsetMathNest::completionPrefix(Cursor const & cur) const
1719 {
1720         if (!cur.inMacroMode())
1721                 return docstring();
1722
1723         return cur.activeMacro()->name();
1724 }
1725
1726
1727 bool InsetMathNest::insertCompletion(Cursor & cur, docstring const & s,
1728                                      bool finished)
1729 {
1730         if (!cur.inMacroMode())
1731                 return false;
1732
1733         // append completion to active macro
1734         InsetMathUnknown * inset = cur.activeMacro();
1735         inset->setName(inset->name() + s);
1736
1737         // finish macro
1738         if (finished) {
1739 #if 0
1740                 // FIXME: this creates duplicates in the completion popup
1741                 // which looks ugly. Moreover the changes the list lengths
1742                 // which seems to
1743                 confuse the popup as well.
1744                 MathCompletionList::addToFavorites(inset->name());
1745 #endif
1746                 lyx::dispatch(FuncRequest(LFUN_SELF_INSERT, " "));
1747         }
1748
1749         return true;
1750 }
1751
1752
1753 void InsetMathNest::completionPosAndDim(Cursor const & cur, int & x, int & y,
1754                                         Dimension & dim) const
1755 {
1756         Inset const * inset = cur.activeMacro();
1757         if (!inset)
1758                 return;
1759
1760         // get inset dimensions
1761         dim = cur.bv().coordCache().insets().dim(inset);
1762         // FIXME: these 3 are no accurate, but should depend on the font.
1763         // Now the popup jumps down if you enter a char with descent > 0.
1764         dim.des += 3;
1765         dim.asc += 3;
1766
1767         // and position
1768         Point xy
1769         = cur.bv().coordCache().insets().xy(inset);
1770         x = xy.x_;
1771         y = xy.y_;
1772 }
1773
1774
1775 bool InsetMathNest::cursorMathForward(Cursor & cur)
1776 {
1777         if (cur.pos() != cur.lastpos() && cur.openable(cur.nextAtom())) {
1778                 cur.pushBackward(*cur.nextAtom().nucleus());
1779                 cur.inset().idxFirst(cur);
1780                 return true;
1781         }
1782         if (cur.posForward() || idxForward(cur))
1783                 return true;
1784         // try to pop forwards --- but don't pop out of math! leave that to
1785         // the FINISH lfuns
1786         int s = cur.depth() - 2;
1787         if (s >= 0 && cur[s].inset().asInsetMath())
1788                 return cur.popForward();
1789         return false;
1790 }
1791
1792
1793 bool InsetMathNest::cursorMathBackward(Cursor & cur)
1794 {
1795         if (cur.pos() != 0 && cur.openable(cur.prevAtom())) {
1796                 cur.posBackward();
1797                 cur.push(*cur.nextAtom().nucleus());
1798                 cur.inset().idxLast(cur);
1799                 return true;
1800         }
1801         if (cur.posBackward() || idxBackward(cur))
1802                 return true;
1803         // try to pop backwards --- but don't pop out of math! leave that to
1804         // the FINISH lfuns
1805         int s = cur.depth() - 2;
1806         if (s >= 0 && cur[s].inset().asInsetMath())
1807                 return cur.popBackward();
1808         return false;
1809 }
1810
1811
1812 ////////////////////////////////////////////////////////////////////
1813
1814 MathCompletionList::MathCompletionList(Cursor const & cur)
1815 {
1816         // fill it with macros from the buffer
1817         MacroNameSet macros;
1818         cur.buffer().listMacroNames(macros);
1819         MacroNameSet::const_iterator it;
1820         for (it = macros.begin(); it != macros.end(); ++it) {
1821                 if (cur.buffer().getMacro(*it, cur, false))
1822                         locals.push_back("\\" + *it);
1823         }
1824         sort(locals.begin(), locals.end());
1825
1826         if (globals.size() > 0)
1827                 return;
1828
1829         // fill in global macros
1830         macros.clear();
1831         MacroTable::globalMacros().getMacroNames(macros);
1832         //lyxerr << "Globals completion macros: ";
1833         for (it = macros.begin(); it != macros.end(); ++it) {
1834                 //lyxerr << "\\" + *it << " ";
1835                 globals.push_back("\\" + *it);
1836         }
1837         //lyxerr << std::endl;
1838
1839         // fill in global commands
1840         globals.push_back(from_ascii("\\boxed"));
1841         globals.push_back(from_ascii("\\fbox"));
1842         globals.push_back(from_ascii("\\framebox"));
1843         globals.push_back(from_ascii("\\makebox"));
1844         globals.push_back(from_ascii("\\kern"));
1845         globals.push_back(from_ascii("\\xrightarrow"));
1846         globals.push_back(from_ascii("\\xleftarrow"));
1847         globals.push_back(from_ascii("\\split"));
1848         globals.push_back(from_ascii("\\gathered"));
1849         globals.push_back(from_ascii("\\aligned"));
1850         globals.push_back(from_ascii("\\alignedat"));
1851         globals.push_back(from_ascii("\\cases"));
1852         globals.push_back(from_ascii("\\substack"));
1853         globals.push_back(from_ascii("\\xymatrix"));
1854         globals.push_back(from_ascii("\\subarray"));
1855         globals.push_back(from_ascii("\\array"));
1856         globals.push_back(from_ascii("\\sqrt"));
1857         globals.push_back(from_ascii("\\root"));
1858         globals.push_back(from_ascii("\\tabular"));
1859         globals.push_back(from_ascii("\\stackrel"));
1860         globals.push_back(from_ascii("\\binom"));
1861         globals.push_back(from_ascii("\\choose"));
1862         globals.push_back(from_ascii("\\brace"));
1863         globals.push_back(from_ascii("\\brack"));
1864         globals.push_back(from_ascii("\\frac"));
1865         globals.push_back(from_ascii("\\over"));
1866         globals.push_back(from_ascii("\\nicefrac"));
1867         globals.push_back(from_ascii("\\unitfrac"));
1868         globals.push_back(from_ascii("\\unitfracthree"));
1869         globals.push_back(from_ascii("\\unitone"));
1870         globals.push_back(from_ascii("\\unittwo"));
1871         globals.push_back(from_ascii("\\infer"));
1872         globals.push_back(from_ascii("\\atop"));
1873         globals.push_back(from_ascii("\\lefteqn"));
1874         globals.push_back(from_ascii("\\boldsymbol"));
1875         globals.push_back(from_ascii("\\bm"));
1876         globals.push_back(from_ascii("\\color"));
1877         globals.push_back(from_ascii("\\normalcolor"));
1878         globals.push_back(from_ascii("\\textcolor"));
1879         globals.push_back(from_ascii("\\dfrac"));
1880         globals.push_back(from_ascii("\\tfrac"));
1881         globals.push_back(from_ascii("\\dbinom"));
1882         globals.push_back(from_ascii("\\tbinom"));
1883         globals.push_back(from_ascii("\\hphantom"));
1884         globals.push_back(from_ascii("\\phantom"));
1885         globals.push_back(from_ascii("\\vphantom"));
1886         MathWordList const & words = mathedWordList();
1887         MathWordList::const_iterator it2;
1888         //lyxerr << "Globals completion commands: ";
1889         for (it2 = words.begin(); it2 != words.end(); ++it2) {
1890                 globals.push_back("\\" + (*it2).first);
1891                 //lyxerr << "\\" + (*it2).first << " ";
1892         }
1893         //lyxerr << std::endl;
1894         sort(globals.begin(), globals.end());
1895 }
1896
1897
1898 MathCompletionList::~MathCompletionList()
1899 {
1900 }
1901
1902
1903 size_type MathCompletionList::size() const
1904 {
1905         return locals.size() + globals.size();
1906 }
1907
1908
1909 docstring const & MathCompletionList::data(size_t idx) const
1910 {
1911         size_t lsize = locals.size();
1912         if (idx >= lsize)
1913                 return globals[idx - lsize];
1914         else
1915                 return locals[idx];
1916 }
1917
1918
1919 std::string MathCompletionList::icon(size_t idx) const
1920 {
1921         // get the latex command
1922         docstring cmd;
1923         size_t lsize = locals.size();
1924         if (idx >= lsize)
1925                 cmd = globals[idx - lsize];
1926         else
1927                 cmd = locals[idx];
1928
1929         // get the icon resource name by stripping the backslash
1930         return "images/math/" + to_utf8(cmd.substr(1)) + ".png";
1931 }
1932
1933 std::vector<docstring> MathCompletionList::globals;
1934
1935 } // namespace lyx