src/mathed/InsetMathGrid.cpp

   1 /**
   2  * \file InsetMathGrid.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 "InsetMathGrid.h"
  14
  15 #include "MathData.h"
  16 #include "MathParser.h"
  17 #include "MathStream.h"
  18 #include "MetricsInfo.h"
  19
  20 #include "BufferView.h"
  21 #include "CutAndPaste.h"
  22 #include "FuncStatus.h"
  23 #include "Cursor.h"
  24 #include "debug.h"
  25 #include "FuncRequest.h"
  26 #include "gettext.h"
  27
  28 #include "frontends/Clipboard.h"
  29 #include "frontends/Painter.h"
  30
  31 #include "support/lstrings.h"
  32 #include "support/docstream.h"
  33
  34 #include <sstream>
  35
  36
  37 namespace lyx {
  38
  39 using support::bformat;
  40
  41 using std::endl;
  42 using std::max;
  43 using std::min;
  44 using std::swap;
  45
  46 using std::string;
  47 using std::istream;
  48 using std::istringstream;
  49 using std::vector;
  50
  51
  52 namespace {
  53
  54 docstring verboseHLine(int n)
  55 {
  56         docstring res;
  57         for (int i = 0; i < n; ++i)
  58                 res += "\\hline";
  59         if (n)
  60                 res += ' ';
  61         return res;
  62 }
  63
  64
  65 int extractInt(istream & is)
  66 {
  67         int num = 1;
  68         is >> num;
  69         return (num == 0) ? 1 : num;
  70 }
  71
  72 }
  73
  74
  75 //////////////////////////////////////////////////////////////
  76
  77
  78 InsetMathGrid::CellInfo::CellInfo()
  79         : dummy_(false)
  80 {}
  81
  82
  83
  84
  85 //////////////////////////////////////////////////////////////
  86
  87
  88 InsetMathGrid::RowInfo::RowInfo()
  89         : lines_(0), skip_(0), allow_pagebreak_(true)
  90 {}
  91
  92
  93
  94 int InsetMathGrid::RowInfo::skipPixels() const
  95 {
  96         return crskip_.inBP();
  97 }
  98
  99
 100
 101 //////////////////////////////////////////////////////////////
 102
 103
 104 InsetMathGrid::ColInfo::ColInfo()
 105         : align_('c'), lines_(0)
 106 {}
 107
 108
 109 //////////////////////////////////////////////////////////////
 110
 111
 112 InsetMathGrid::InsetMathGrid(char v, docstring const & h)
 113         : InsetMathNest(guessColumns(h)),
 114           rowinfo_(2),
 115           colinfo_(guessColumns(h) + 1),
 116           cellinfo_(1 * guessColumns(h))
 117 {
 118         setDefaults();
 119         valign(v);
 120         halign(h);
 121         //lyxerr << "created grid with " << ncols() << " columns" << endl;
 122 }
 123
 124
 125 InsetMathGrid::InsetMathGrid()
 126         : InsetMathNest(1),
 127           rowinfo_(1 + 1),
 128                 colinfo_(1 + 1),
 129                 cellinfo_(1),
 130                 v_align_('c')
 131 {
 132         setDefaults();
 133 }
 134
 135
 136 InsetMathGrid::InsetMathGrid(col_type m, row_type n)
 137         : InsetMathNest(m * n),
 138           rowinfo_(n + 1),
 139                 colinfo_(m + 1),
 140                 cellinfo_(m * n),
 141                 v_align_('c')
 142 {
 143         setDefaults();
 144 }
 145
 146
 147 InsetMathGrid::InsetMathGrid(col_type m, row_type n, char v, docstring const & h)
 148         : InsetMathNest(m * n),
 149           rowinfo_(n + 1),
 150           colinfo_(m + 1),
 151                 cellinfo_(m * n),
 152                 v_align_(v)
 153 {
 154         setDefaults();
 155         valign(v);
 156         halign(h);
 157 }
 158
 159
 160 Inset * InsetMathGrid::clone() const
 161 {
 162         return new InsetMathGrid(*this);
 163 }
 164
 165
 166 InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
 167 {
 168         return col + ncols() * row;
 169 }
 170
 171
 172 void InsetMathGrid::setDefaults()
 173 {
 174         if (ncols() <= 0)
 175                 lyxerr << "positive number of columns expected" << endl;
 176         //if (nrows() <= 0)
 177         //      lyxerr << "positive number of rows expected" << endl;
 178         for (col_type col = 0; col < ncols(); ++col) {
 179                 colinfo_[col].align_ = defaultColAlign(col);
 180                 colinfo_[col].skip_  = defaultColSpace(col);
 181                 colinfo_[col].special_.clear();
 182         }
 183 }
 184
 185
 186 void InsetMathGrid::halign(docstring const & hh)
 187 {
 188         col_type col = 0;
 189         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 190                 char_type c = *it;
 191                 if (c == '|') {
 192                         colinfo_[col].lines_++;
 193                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 194                             c == '!' || c == '@' || c == '>' || c == '<') &&
 195                            it + 1 != hh.end() && *(it + 1) == '{') {
 196                         // @{decl.} and p{width} are standard LaTeX, the
 197                         // others are extensions by array.sty
 198                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 199                         if (newcolumn) {
 200                                 // this declares a new column
 201                                 if (col >= ncols())
 202                                         // Only intercolumn stuff is allowed
 203                                         // in the last dummy column
 204                                         break;
 205                                 colinfo_[col].align_ = 'l';
 206                         } else {
 207                                 // this is intercolumn stuff
 208                                 if (colinfo_[col].special_.empty())
 209                                         // Overtake possible lines
 210                                         colinfo_[col].special_ = docstring(colinfo_[col].lines_, '|');
 211                         }
 212                         int brace_open = 0;
 213                         int brace_close = 0;
 214                         while (it != hh.end()) {
 215                                 c = *it;
 216                                 colinfo_[col].special_ += c;
 217                                 if (c == '{')
 218                                         ++brace_open;
 219                                 else if (c == '}')
 220                                         ++brace_close;
 221                                 ++it;
 222                                 if (brace_open > 0 && brace_open == brace_close)
 223                                         break;
 224                         }
 225                         --it;
 226                         if (newcolumn) {
 227                                 colinfo_[col].lines_ = std::count(
 228                                         colinfo_[col].special_.begin(),
 229                                         colinfo_[col].special_.end(), '|');
 230                                 LYXERR(Debug::MATHED)
 231                                         << "special column separator: `"
 232                                         << to_utf8(colinfo_[col].special_)
 233                                         << '\'' << endl;
 234                                 ++col;
 235                                 colinfo_[col].lines_ = 0;
 236                                 colinfo_[col].special_.clear();
 237                         }
 238                 } else if (col >= ncols()) {
 239                         // Only intercolumn stuff is allowed in the last
 240                         // dummy column
 241                         break;
 242                 } else if (c == 'c' || c == 'l' || c == 'r') {
 243                         colinfo_[col].align_ = static_cast<char>(c);
 244                         if (!colinfo_[col].special_.empty()) {
 245                                 colinfo_[col].special_ += c;
 246                                 colinfo_[col].lines_ = std::count(
 247                                                 colinfo_[col].special_.begin(),
 248                                                 colinfo_[col].special_.end(), '|');
 249                                 LYXERR(Debug::MATHED)
 250                                         << "special column separator: `"
 251                                         << to_utf8(colinfo_[col].special_)
 252                                         << '\'' << endl;
 253                         }
 254                         ++col;
 255                         colinfo_[col].lines_ = 0;
 256                         colinfo_[col].special_.clear();
 257                 } else {
 258                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 259                 }
 260         }
 261
 262 /*
 263         col_type n = hh.size();
 264         if (n > ncols())
 265                 n = ncols();
 266         for (col_type col = 0; col < n; ++col)
 267                 colinfo_[col].align_ = hh[col];
 268 */
 269 }
 270
 271
 272 InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh) const
 273 {
 274         col_type col = 0;
 275         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
 276                 if (*it == 'c' || *it == 'l' || *it == 'r'||
 277                     *it == 'p' || *it == 'm' || *it == 'b')
 278                         ++col;
 279         // let's have at least one column, even if we did not recognize its
 280         // alignment
 281         if (col == 0)
 282                 col = 1;
 283         return col;
 284 }
 285
 286
 287 void InsetMathGrid::halign(char h, col_type col)
 288 {
 289         colinfo_[col].align_ = h;
 290         if (!colinfo_[col].special_.empty()) {
 291                 char_type & c = colinfo_[col].special_[colinfo_[col].special_.size() - 1];
 292                 if (c == 'l' || c == 'c' || c == 'r')
 293                         c = h;
 294         }
 295         // FIXME: Change alignment of p, m and b columns, too
 296 }
 297
 298
 299 char InsetMathGrid::halign(col_type col) const
 300 {
 301         return colinfo_[col].align_;
 302 }
 303
 304
 305 docstring InsetMathGrid::halign() const
 306 {
 307         docstring res;
 308         for (col_type col = 0; col < ncols(); ++col) {
 309                 if (colinfo_[col].special_.empty()) {
 310                         res += docstring(colinfo_[col].lines_, '|');
 311                         res += colinfo_[col].align_;
 312                 } else
 313                         res += colinfo_[col].special_;
 314         }
 315         if (colinfo_[ncols()].special_.empty())
 316                 return res + docstring(colinfo_[ncols()].lines_, '|');
 317         return res + colinfo_[ncols()].special_;
 318 }
 319
 320
 321 void InsetMathGrid::valign(char c)
 322 {
 323         v_align_ = c;
 324 }
 325
 326
 327 char InsetMathGrid::valign() const
 328 {
 329         return v_align_;
 330 }
 331
 332
 333 InsetMathGrid::col_type InsetMathGrid::ncols() const
 334 {
 335         return colinfo_.size() - 1;
 336 }
 337
 338
 339 InsetMathGrid::row_type InsetMathGrid::nrows() const
 340 {
 341         return rowinfo_.size() - 1;
 342 }
 343
 344
 345 InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
 346 {
 347         return idx % ncols();
 348 }
 349
 350
 351 InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
 352 {
 353         return idx / ncols();
 354 }
 355
 356
 357 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 358 {
 359         rowinfo_[row].crskip_ = crskip;
 360 }
 361
 362
 363 Length InsetMathGrid::vcrskip(row_type row) const
 364 {
 365         return rowinfo_[row].crskip_;
 366 }
 367
 368
 369 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 370 {
 371         // let the cells adjust themselves
 372         InsetMathNest::metrics(mi);
 373
 374         BufferView & bv = *mi.base.bv;
 375
 376         // compute absolute sizes of vertical structure
 377         for (row_type row = 0; row < nrows(); ++row) {
 378                 int asc  = 0;
 379                 int desc = 0;
 380                 for (col_type col = 0; col < ncols(); ++col) {
 381                         Dimension const & dimc = cell(index(row, col)).dimension(bv);
 382                         asc  = max(asc,  dimc.asc);
 383                         desc = max(desc, dimc.des);
 384                 }
 385                 rowinfo_[row].ascent_  = asc;
 386                 rowinfo_[row].descent_ = desc;
 387         }
 388         rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 389         rowinfo_[nrows()].ascent_  = 0;
 390         rowinfo_[nrows()].descent_ = 0;
 391
 392         // compute vertical offsets
 393         rowinfo_[0].offset_ = 0;
 394         for (row_type row = 1; row <= nrows(); ++row) {
 395                 rowinfo_[row].offset_  =
 396                         rowinfo_[row - 1].offset_  +
 397                         rowinfo_[row - 1].descent_ +
 398                         rowinfo_[row - 1].skipPixels() +
 399                         rowsep() +
 400                         rowinfo_[row].lines_ * hlinesep() +
 401                         rowinfo_[row].ascent_;
 402         }
 403
 404         // adjust vertical offset
 405         int h = 0;
 406         switch (v_align_) {
 407                 case 't':
 408                         h = 0;
 409                         break;
 410                 case 'b':
 411                         h = rowinfo_[nrows() - 1].offset_;
 412                         break;
 413                 default:
 414                         h = rowinfo_[nrows() - 1].offset_ / 2;
 415         }
 416         for (row_type row = 0; row <= nrows(); ++row)
 417                 rowinfo_[row].offset_ -= h;
 418
 419
 420         // compute absolute sizes of horizontal structure
 421         for (col_type col = 0; col < ncols(); ++col) {
 422                 int wid = 0;
 423                 for (row_type row = 0; row < nrows(); ++row)
 424                         wid = max(wid, cell(index(row, col)).dimension(bv).wid);
 425                 colinfo_[col].width_ = wid;
 426         }
 427         colinfo_[ncols()].width_  = 0;
 428
 429         // compute horizontal offsets
 430         colinfo_[0].offset_ = border();
 431         for (col_type col = 1; col <= ncols(); ++col) {
 432                 colinfo_[col].offset_ =
 433                         colinfo_[col - 1].offset_ +
 434                         colinfo_[col - 1].width_ +
 435                         colinfo_[col - 1].skip_ +
 436                         colsep() +
 437                         colinfo_[col].lines_ * vlinesep();
 438         }
 439
 440
 441         dim.wid   =   colinfo_[ncols() - 1].offset_
 442                        + colinfo_[ncols() - 1].width_
 443                  + vlinesep() * colinfo_[ncols()].lines_
 444                        + border();
 445
 446         dim.asc  = - rowinfo_[0].offset_
 447                        + rowinfo_[0].ascent_
 448                  + hlinesep() * rowinfo_[0].lines_
 449                        + border();
 450
 451         dim.des =   rowinfo_[nrows() - 1].offset_
 452                        + rowinfo_[nrows() - 1].descent_
 453                  + hlinesep() * rowinfo_[nrows()].lines_
 454                        + border();
 455
 456
 457 /*
 458         // Increase ws_[i] for 'R' columns (except the first one)
 459         for (int i = 1; i < nc_; ++i)
 460                 if (align_[i] == 'R')
 461                         ws_[i] += 10 * df_width;
 462         // Increase ws_[i] for 'C' column
 463         if (align_[0] == 'C')
 464                 if (ws_[0] < 7 * workwidth / 8)
 465                         ws_[0] = 7 * workwidth / 8;
 466
 467         // Adjust local tabs
 468         width = colsep();
 469         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 470                 int rg = COLSEP;
 471                 int lf = 0;
 472                 for (int i = 0; i < nc_; ++i) {
 473                         bool isvoid = false;
 474                         if (cxrow->getTab(i) <= 0) {
 475                                 cxrow->setTab(i, df_width);
 476                                 isvoid = true;
 477                         }
 478                         switch (align_[i]) {
 479                         case 'l':
 480                                 lf = 0;
 481                                 break;
 482                         case 'c':
 483                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 484                                 break;
 485                         case 'r':
 486                         case 'R':
 487                                 lf = ws_[i] - cxrow->getTab(i);
 488                                 break;
 489                         case 'C':
 490                                 if (cxrow == row_.begin())
 491                                         lf = 0;
 492                                 else if (cxrow.is_last())
 493                                         lf = ws_[i] - cxrow->getTab(i);
 494                                 else
 495                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 496                                 break;
 497                         }
 498                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 499                         cxrow->setTab(i, lf + rg);
 500                         rg = ws_[i] - ww + colsep();
 501                         if (cxrow == row_.begin())
 502                                 width += ws_[i] + colsep();
 503                 }
 504                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 505         }
 506 */
 507         metricsMarkers2(dim);
 508         // Cache the inset dimension.
 509         setDimCache(mi, dim);
 510 }
 511
 512
 513 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 514 {
 515         drawWithMargin(pi, x, y, 0, 0);
 516 }
 517
 518
 519 void InsetMathGrid::drawWithMargin(PainterInfo & pi, int x, int y,
 520         int lmargin, int rmargin) const
 521 {
 522         Dimension const dim = dimension(*pi.base.bv);
 523         BufferView const & bv = *pi.base.bv;
 524
 525         for (idx_type idx = 0; idx < nargs(); ++idx)
 526                 cell(idx).draw(pi, x + lmargin + cellXOffset(bv, idx),
 527                         y + cellYOffset(idx));
 528
 529         for (row_type row = 0; row <= nrows(); ++row)
 530                 for (unsigned int i = 0; i < rowinfo_[row].lines_; ++i) {
 531                         int yy = y + rowinfo_[row].offset_ - rowinfo_[row].ascent_
 532                                 - i * hlinesep() - hlinesep()/2 - rowsep()/2;
 533                         pi.pain.line(x + lmargin + 1, yy,
 534                                      x + dim.width() - rmargin - 1, yy,
 535                                      Color_foreground);
 536                 }
 537
 538         for (col_type col = 0; col <= ncols(); ++col)
 539                 for (unsigned int i = 0; i < colinfo_[col].lines_; ++i) {
 540                         int xx = x + lmargin + colinfo_[col].offset_
 541                                 - i * vlinesep() - vlinesep()/2 - colsep()/2;
 542                         pi.pain.line(xx, y - dim.ascent() + 1,
 543                                      xx, y + dim.descent() - 1,
 544                                      Color_foreground);
 545                 }
 546         drawMarkers2(pi, x, y);
 547 }
 548
 549
 550 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 551 {
 552         // let the cells adjust themselves
 553         //InsetMathNest::metrics(mi);
 554         for (idx_type i = 0; i < nargs(); ++i)
 555                 cell(i).metricsT(mi, dim);
 556
 557         // compute absolute sizes of vertical structure
 558         for (row_type row = 0; row < nrows(); ++row) {
 559                 int asc  = 0;
 560                 int desc = 0;
 561                 for (col_type col = 0; col < ncols(); ++col) {
 562                         //MathData const & c = cell(index(row, col));
 563                         // FIXME: BROKEN!
 564                         Dimension dimc;
 565                         asc  = max(asc,  dimc.ascent());
 566                         desc = max(desc, dimc.descent());
 567                 }
 568                 rowinfo_[row].ascent_  = asc;
 569                 rowinfo_[row].descent_ = desc;
 570         }
 571         //rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 572         rowinfo_[nrows()].ascent_  = 0;
 573         rowinfo_[nrows()].descent_ = 0;
 574
 575         // compute vertical offsets
 576         rowinfo_[0].offset_ = 0;
 577         for (row_type row = 1; row <= nrows(); ++row) {
 578                 rowinfo_[row].offset_  =
 579                         rowinfo_[row - 1].offset_  +
 580                         rowinfo_[row - 1].descent_ +
 581                         //rowinfo_[row - 1].skipPixels() +
 582                         1 + //rowsep() +
 583                         //rowinfo_[row].lines_ * hlinesep() +
 584                         rowinfo_[row].ascent_;
 585         }
 586
 587         // adjust vertical offset
 588         int h = 0;
 589         switch (v_align_) {
 590                 case 't':
 591                         h = 0;
 592                         break;
 593                 case 'b':
 594                         h = rowinfo_[nrows() - 1].offset_;
 595                         break;
 596                 default:
 597                         h = rowinfo_[nrows() - 1].offset_ / 2;
 598         }
 599         for (row_type row = 0; row <= nrows(); ++row)
 600                 rowinfo_[row].offset_ -= h;
 601
 602
 603         // compute absolute sizes of horizontal structure
 604         for (col_type col = 0; col < ncols(); ++col) {
 605                 int wid = 0;
 606                 for (row_type row = 0; row < nrows(); ++row) {
 607                         // FIXME: BROKEN!
 608                         //wid = max(wid, cell(index(row, col)).width());
 609                 }
 610                 colinfo_[col].width_ = wid;
 611         }
 612         colinfo_[ncols()].width_  = 0;
 613
 614         // compute horizontal offsets
 615         colinfo_[0].offset_ = border();
 616         for (col_type col = 1; col <= ncols(); ++col) {
 617                 colinfo_[col].offset_ =
 618                         colinfo_[col - 1].offset_ +
 619                         colinfo_[col - 1].width_ +
 620                         colinfo_[col - 1].skip_ +
 621                         1 ; //colsep() +
 622                         //colinfo_[col].lines_ * vlinesep();
 623         }
 624
 625
 626         dim.wid  =  colinfo_[ncols() - 1].offset_
 627                        + colinfo_[ncols() - 1].width_
 628                  //+ vlinesep() * colinfo_[ncols()].lines_
 629                        + 2;
 630
 631         dim.asc  = -rowinfo_[0].offset_
 632                        + rowinfo_[0].ascent_
 633                  //+ hlinesep() * rowinfo_[0].lines_
 634                        + 1;
 635
 636         dim.des  =  rowinfo_[nrows() - 1].offset_
 637                        + rowinfo_[nrows() - 1].descent_
 638                  //+ hlinesep() * rowinfo_[nrows()].lines_
 639                        + 1;
 640 }
 641
 642
 643 void InsetMathGrid::drawT(TextPainter & pain, int x, int y) const
 644 {
 645 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 646 //              cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 647 }
 648
 649
 650 docstring InsetMathGrid::eolString(row_type row, bool emptyline, bool fragile) const
 651 {
 652         docstring eol;
 653
 654         if (!rowinfo_[row].crskip_.zero())
 655                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 656         else if(!rowinfo_[row].allow_pagebreak_)
 657                 eol += '*';
 658
 659         // make sure an upcoming '[' does not break anything
 660         if (row + 1 < nrows()) {
 661                 MathData const & c = cell(index(row + 1, 0));
 662                 if (c.size() && c.front()->getChar() == '[')
 663                         //eol += "[0pt]";
 664                         eol += "{}";
 665         }
 666
 667         // only add \\ if necessary
 668         if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !emptyline))
 669                 return docstring();
 670
 671         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 672 }
 673
 674
 675 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 676 {
 677         if (col + 1 == lastcol)
 678                 return docstring();
 679         return from_ascii(" & ");
 680 }
 681
 682
 683 void InsetMathGrid::addRow(row_type row)
 684 {
 685         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 686         cells_.insert
 687                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
 688         cellinfo_.insert
 689                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 690 }
 691
 692
 693 void InsetMathGrid::appendRow()
 694 {
 695         rowinfo_.push_back(RowInfo());
 696         //cells_.insert(cells_.end(), ncols(), MathData());
 697         for (col_type col = 0; col < ncols(); ++col) {
 698                 cells_.push_back(cells_type::value_type());
 699                 cellinfo_.push_back(CellInfo());
 700         }
 701 }
 702
 703
 704 void InsetMathGrid::delRow(row_type row)
 705 {
 706         if (nrows() == 1)
 707                 return;
 708
 709         cells_type::iterator it = cells_.begin() + row * ncols();
 710         cells_.erase(it, it + ncols());
 711
 712         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 713         cellinfo_.erase(jt, jt + ncols());
 714
 715         rowinfo_.erase(rowinfo_.begin() + row);
 716 }
 717
 718
 719 void InsetMathGrid::copyRow(row_type row)
 720 {
 721         addRow(row);
 722         for (col_type col = 0; col < ncols(); ++col)
 723                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 724 }
 725
 726
 727 void InsetMathGrid::swapRow(row_type row)
 728 {
 729         if (nrows() == 1)
 730                 return;
 731         if (row + 1 == nrows())
 732                 --row;
 733         for (col_type col = 0; col < ncols(); ++col)
 734                 swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + col]);
 735 }
 736
 737
 738 void InsetMathGrid::addCol(col_type newcol)
 739 {
 740         const col_type nc = ncols();
 741         const row_type nr = nrows();
 742         cells_type new_cells((nc + 1) * nr);
 743         vector<CellInfo> new_cellinfo((nc + 1) * nr);
 744
 745         for (row_type row = 0; row < nr; ++row)
 746                 for (col_type col = 0; col < nc; ++col) {
 747                         new_cells[row * (nc + 1) + col + (col >= newcol)]
 748                                 = cells_[row * nc + col];
 749                         new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
 750                                 = cellinfo_[row * nc + col];
 751                 }
 752         swap(cells_, new_cells);
 753         swap(cellinfo_, new_cellinfo);
 754
 755         ColInfo inf;
 756         inf.skip_  = defaultColSpace(newcol);
 757         inf.align_ = defaultColAlign(newcol);
 758         colinfo_.insert(colinfo_.begin() + newcol, inf);
 759 }
 760
 761
 762 void InsetMathGrid::delCol(col_type col)
 763 {
 764         if (ncols() == 1)
 765                 return;
 766
 767         cells_type tmpcells;
 768         vector<CellInfo> tmpcellinfo;
 769         for (col_type i = 0; i < nargs(); ++i)
 770                 if (i % ncols() != col) {
 771                         tmpcells.push_back(cells_[i]);
 772                         tmpcellinfo.push_back(cellinfo_[i]);
 773                 }
 774         swap(cells_, tmpcells);
 775         swap(cellinfo_, tmpcellinfo);
 776
 777         colinfo_.erase(colinfo_.begin() + col);
 778 }
 779
 780
 781 void InsetMathGrid::copyCol(col_type col)
 782 {
 783         addCol(col);
 784         for (row_type row = 0; row < nrows(); ++row)
 785                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 786 }
 787
 788
 789 void InsetMathGrid::swapCol(col_type col)
 790 {
 791         if (ncols() == 1)
 792                 return;
 793         if (col + 1 == ncols())
 794                 --col;
 795         for (row_type row = 0; row < nrows(); ++row)
 796                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 797 }
 798
 799
 800 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 801 {
 802         col_type c = col(idx);
 803         int x = colinfo_[c].offset_;
 804         char align = colinfo_[c].align_;
 805         Dimension const & celldim = cell(idx).dimension(bv);
 806         if (align == 'r' || align == 'R')
 807                 x += colinfo_[c].width_ - celldim.wid;
 808         if (align == 'c' || align == 'C')
 809                 x += (colinfo_[c].width_ - celldim.wid) / 2;
 810         return x;
 811 }
 812
 813
 814 int InsetMathGrid::cellYOffset(idx_type idx) const
 815 {
 816         return rowinfo_[row(idx)].offset_;
 817 }
 818
 819
 820 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 821 {
 822         if (up) {
 823                 if (cur.row() == 0)
 824                         return false;
 825                 cur.idx() -= ncols();
 826         } else {
 827                 if (cur.row() + 1 >= nrows())
 828                         return false;
 829                 cur.idx() += ncols();
 830         }
 831         cur.pos() = cur.cell().x2pos(cur.x_target() - cur.cell().xo(cur.bv()));
 832         return true;
 833 }
 834
 835
 836 bool InsetMathGrid::idxBackward(Cursor & cur) const
 837 {
 838         // leave matrix if at the front edge
 839         if (cur.col() == 0)
 840                 return false;
 841         --cur.idx();
 842         cur.pos() = cur.lastpos();
 843         return true;
 844 }
 845
 846
 847 bool InsetMathGrid::idxForward(Cursor & cur) const
 848 {
 849         // leave matrix if at the back edge
 850         if (cur.col() + 1 == ncols())
 851                 return false;
 852         ++cur.idx();
 853         cur.pos() = 0;
 854         return true;
 855 }
 856
 857
 858 bool InsetMathGrid::idxFirst(Cursor & cur) const
 859 {
 860         switch (v_align_) {
 861                 case 't':
 862                         cur.idx() = 0;
 863                         break;
 864                 case 'b':
 865                         cur.idx() = (nrows() - 1) * ncols();
 866                         break;
 867                 default:
 868                         cur.idx() = ((nrows() - 1) / 2) * ncols();
 869         }
 870         cur.pos() = 0;
 871         return true;
 872 }
 873
 874
 875 bool InsetMathGrid::idxLast(Cursor & cur) const
 876 {
 877         switch (v_align_) {
 878                 case 't':
 879                         cur.idx() = ncols() - 1;
 880                         break;
 881                 case 'b':
 882                         cur.idx() = nargs() - 1;
 883                         break;
 884                 default:
 885                         cur.idx() = ((nrows() - 1) / 2 + 1) * ncols() - 1;
 886         }
 887         cur.pos() = cur.lastpos();
 888         return true;
 889 }
 890
 891
 892 bool InsetMathGrid::idxDelete(idx_type & idx)
 893 {
 894         // nothing to do if we have just one row
 895         if (nrows() == 1)
 896                 return false;
 897
 898         // nothing to do if we are in the middle of the last row of the inset
 899         if (idx + ncols() > nargs())
 900                 return false;
 901
 902         // try to delete entire sequence of ncols() empty cells if possible
 903         for (idx_type i = idx; i < idx + ncols(); ++i)
 904                 if (cell(i).size())
 905                         return false;
 906
 907         // move cells if necessary
 908         for (idx_type i = index(row(idx), 0); i < idx; ++i)
 909                 swap(cell(i), cell(i + ncols()));
 910
 911         delRow(row(idx));
 912
 913         if (idx >= nargs())
 914                 idx = nargs() - 1;
 915
 916         // undo effect of Ctrl-Tab (i.e. pull next cell)
 917         //if (idx + 1 != nargs())
 918         //      cell(idx).swap(cell(idx + 1));
 919
 920         // we handled the event..
 921         return true;
 922 }
 923
 924
 925 // reimplement old behaviour when pressing Delete in the last position
 926 // of a cell
 927 void InsetMathGrid::idxGlue(idx_type idx)
 928 {
 929         col_type c = col(idx);
 930         if (c + 1 == ncols()) {
 931                 if (row(idx) + 1 != nrows()) {
 932                         for (col_type cc = 0; cc < ncols(); ++cc)
 933                                 cell(idx).append(cell(idx + cc + 1));
 934                         delRow(row(idx) + 1);
 935                 }
 936         } else {
 937                 cell(idx).append(cell(idx + 1));
 938                 for (col_type cc = c + 2; cc < ncols(); ++cc)
 939                         cell(idx - c + cc - 1) = cell(idx - c + cc);
 940                 cell(idx - c + ncols() - 1).clear();
 941         }
 942 }
 943
 944
 945 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
 946 {
 947         return rowinfo_[row];
 948 }
 949
 950
 951 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
 952 {
 953         return rowinfo_[row];
 954 }
 955
 956
 957 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
 958 {
 959         row_type const ri = row(idx);
 960         row_type const r1 = min(row(from), row(to));
 961         row_type const r2 = max(row(from), row(to));
 962         col_type const ci = col(idx);
 963         col_type const c1 = min(col(from), col(to));
 964         col_type const c2 = max(col(from), col(to));
 965         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
 966 }
 967
 968
 969
 970 void InsetMathGrid::normalize(NormalStream & os) const
 971 {
 972         os << "[grid ";
 973         for (row_type row = 0; row < nrows(); ++row) {
 974                 os << "[row ";
 975                 for (col_type col = 0; col < ncols(); ++col)
 976                         os << "[cell " << cell(index(row, col)) << ']';
 977                 os << ']';
 978         }
 979         os << ']';
 980 }
 981
 982
 983 void InsetMathGrid::mathmlize(MathStream & os) const
 984 {
 985         os << MTag("mtable");
 986         for (row_type row = 0; row < nrows(); ++row) {
 987                 os << MTag("mtr");
 988                 for (col_type col = 0; col < ncols(); ++col)
 989                         os << cell(index(row, col));
 990                 os << ETag("mtr");
 991         }
 992         os << ETag("mtable");
 993 }
 994
 995
 996 void InsetMathGrid::write(WriteStream & os) const
 997 {
 998         docstring eol;
 999         for (row_type row = 0; row < nrows(); ++row) {
1000                 os << verboseHLine(rowinfo_[row].lines_);
1001                 // don't write & and empty cells at end of line
1002                 col_type lastcol = 0;
1003                 bool emptyline = true;
1004                 for (col_type col = 0; col < ncols(); ++col)
1005                         if (!cell(index(row, col)).empty()) {
1006                                 lastcol = col + 1;
1007                                 emptyline = false;
1008                         }
1009                 for (col_type col = 0; col < lastcol; ++col)
1010                         os << cell(index(row, col)) << eocString(col, lastcol);
1011                 eol = eolString(row, emptyline, os.fragile());
1012                 os << eol;
1013                 // append newline only if line wasn't completely empty
1014                 // and this was not the last line in the grid
1015                 if (!emptyline && row + 1 < nrows())
1016                         os << "\n";
1017         }
1018         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1019         if (!s.empty()) {
1020                 if (eol.empty()) {
1021                         if (os.fragile())
1022                                 os << "\\protect";
1023                         os << "\\\\";
1024                 }
1025                 os << s;
1026         }
1027 }
1028
1029
1030 int InsetMathGrid::colsep() const
1031 {
1032         return 6;
1033 }
1034
1035
1036 int InsetMathGrid::rowsep() const
1037 {
1038         return 6;
1039 }
1040
1041
1042 int InsetMathGrid::hlinesep() const
1043 {
1044         return 3;
1045 }
1046
1047
1048 int InsetMathGrid::vlinesep() const
1049 {
1050         return 3;
1051 }
1052
1053
1054 int InsetMathGrid::border() const
1055 {
1056         return 1;
1057 }
1058
1059
1060 void InsetMathGrid::splitCell(Cursor & cur)
1061 {
1062         if (cur.idx() == cur.lastidx())
1063                 return;
1064         MathData ar = cur.cell();
1065         ar.erase(0, cur.pos());
1066         cur.cell().erase(cur.pos(), cur.lastpos());
1067         ++cur.idx();
1068         cur.pos() = 0;
1069         cur.cell().insert(0, ar);
1070 }
1071
1072
1073 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1074 {
1075         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1076         switch (cmd.action) {
1077
1078         // insert file functions
1079         case LFUN_LINE_DELETE:
1080                 // FIXME: We use recordUndoInset when a change reflects more
1081                 // than one cell, because recordUndo does not work for
1082                 // multiple cells. Unfortunately this puts the cursor in front
1083                 // of the inset after undo. This is (especilally for large
1084                 // grids) annoying.
1085                 cur.recordUndoInset();
1086                 //autocorrect_ = false;
1087                 //macroModeClose();
1088                 //if (selection_) {
1089                 //      selDel();
1090                 //      break;
1091                 //}
1092                 if (nrows() > 1)
1093                         delRow(cur.row());
1094                 if (cur.idx() > cur.lastidx())
1095                         cur.idx() = cur.lastidx();
1096                 if (cur.pos() > cur.lastpos())
1097                         cur.pos() = cur.lastpos();
1098                 break;
1099
1100         case LFUN_CELL_SPLIT:
1101                 cur.recordUndo();
1102                 splitCell(cur);
1103                 break;
1104
1105         case LFUN_CELL_BACKWARD:
1106                 // See below.
1107                 cur.selection() = false;
1108                 if (!idxPrev(cur)) {
1109                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1110                         cur.undispatched();
1111                 }
1112                 break;
1113
1114         case LFUN_CELL_FORWARD:
1115                 // Can't handle selection by additional 'shift' as this is
1116                 // hard bound to LFUN_CELL_BACKWARD
1117                 cur.selection() = false;
1118                 if (!idxNext(cur)) {
1119                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1120                         cur.undispatched();
1121                 }
1122                 break;
1123
1124         case LFUN_BREAK_LINE: {
1125                 cur.recordUndoInset();
1126                 row_type const r = cur.row();
1127                 addRow(r);
1128
1129                 // split line
1130                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1131                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1132
1133                 // split cell
1134                 splitCell(cur);
1135                 swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1136                 if (cur.idx() > 0)
1137                         --cur.idx();
1138                 cur.pos() = cur.lastpos();
1139
1140                 //mathcursor->normalize();
1141                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1142                 break;
1143         }
1144
1145         case LFUN_TABULAR_FEATURE: {
1146                 cur.recordUndoInset();
1147                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1148                 istringstream is(to_utf8(cmd.argument()));
1149                 string s;
1150                 is >> s;
1151                 if (s == "valign-top")
1152                         valign('t');
1153                 else if (s == "valign-middle")
1154                         valign('c');
1155                 else if (s == "valign-bottom")
1156                         valign('b');
1157                 else if (s == "align-left")
1158                         halign('l', cur.col());
1159                 else if (s == "align-right")
1160                         halign('r', cur.col());
1161                 else if (s == "align-center")
1162                         halign('c', cur.col());
1163                 else if (s == "append-row")
1164                         for (int i = 0, n = extractInt(is); i < n; ++i)
1165                                 addRow(cur.row());
1166                 else if (s == "delete-row") {
1167                         cur.clearSelection(); // bug 4323
1168                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1169                                 delRow(cur.row());
1170                                 if (cur.idx() >= nargs())
1171                                         cur.idx() -= ncols();
1172                         }
1173                         cur.pos() = 0; // trick, see below
1174                 }
1175                 else if (s == "copy-row") {
1176                         // Here (as later) we save the cursor col/row
1177                         // in order to restore it after operation.
1178                         row_type const r = cur.row();
1179                         col_type const c = cur.col();
1180                         for (int i = 0, n = extractInt(is); i < n; ++i)
1181                                 copyRow(cur.row());
1182                         cur.idx() = index(r, c);
1183                 }
1184                 else if (s == "swap-row") {
1185                         swapRow(cur.row());
1186                         // Trick to suppress same-idx-means-different-cell
1187                         // assertion crash:
1188                         cur.pos() = 0;
1189                 }
1190                 else if (s == "add-hline-above")
1191                         rowinfo_[cur.row()].lines_++;
1192                 else if (s == "add-hline-below")
1193                         rowinfo_[cur.row()+1].lines_++;
1194                 else if (s == "delete-hline-above")
1195                         rowinfo_[cur.row()].lines_--;
1196                 else if (s == "delete-hline-below")
1197                         rowinfo_[cur.row()+1].lines_--;
1198                 else if (s == "append-column") {
1199                         row_type const r = cur.row();
1200                         col_type const c = cur.col();
1201                         for (int i = 0, n = extractInt(is); i < n; ++i)
1202                                 addCol(cur.col() + 1);
1203                         cur.idx() = index(r, c);
1204                 }
1205                 else if (s == "delete-column") {
1206                         cur.clearSelection(); // bug 4323
1207                         row_type const r = cur.row();
1208                         col_type const c = cur.col();
1209                         for (int i = 0, n = extractInt(is); i < n; ++i)
1210                                 delCol(col(cur.idx()));
1211                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1212                         cur.pos() = 0; // trick, see above
1213                 }
1214                 else if (s == "copy-column") {
1215                         row_type const r = cur.row();
1216                         col_type const c = cur.col();
1217                         copyCol(cur.col());
1218                         cur.idx() = index(r, c);
1219                 }
1220                 else if (s == "swap-column") {
1221                         swapCol(cur.col());
1222                         cur.pos() = 0; // trick, see above
1223                 }
1224                 else if (s == "add-vline-left") {
1225                         colinfo_[cur.col()].lines_++;
1226                         if (!colinfo_[cur.col()].special_.empty())
1227                                 colinfo_[cur.col()].special_ += '|';
1228                 }
1229                 else if (s == "add-vline-right") {
1230                         colinfo_[cur.col()+1].lines_++;
1231                         if (!colinfo_[cur.col()+1].special_.empty())
1232                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1233                 }
1234                 else if (s == "delete-vline-left") {
1235                         colinfo_[cur.col()].lines_--;
1236                         docstring & special = colinfo_[cur.col()].special_;
1237                         if (!special.empty()) {
1238                                 docstring::size_type i = special.rfind('|');
1239                                 BOOST_ASSERT(i != docstring::npos);
1240                                 special.erase(i, 1);
1241                         }
1242                 }
1243                 else if (s == "delete-vline-right") {
1244                         colinfo_[cur.col()+1].lines_--;
1245                         docstring & special = colinfo_[cur.col()+1].special_;
1246                         if (!special.empty()) {
1247                                 docstring::size_type i = special.find('|');
1248                                 BOOST_ASSERT(i != docstring::npos);
1249                                 special.erase(i, 1);
1250                         }
1251                 }
1252                 else {
1253                         cur.undispatched();
1254                         break;
1255                 }
1256                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1257                 lyxerr << "returning FINISHED_LEFT" << endl;
1258                 break;
1259         }
1260
1261         case LFUN_PASTE: {
1262                 cur.message(_("Paste"));
1263                 cap::replaceSelection(cur);
1264                 docstring topaste;
1265                 if (cmd.argument().empty() && !theClipboard().isInternal())
1266                         topaste = theClipboard().getAsText();
1267                 else {
1268                         idocstringstream is(cmd.argument());
1269                         int n = 0;
1270                         is >> n;
1271                         topaste = cap::getSelection(cur.buffer(), n);
1272                 }
1273                 InsetMathGrid grid(1, 1);
1274                 if (!topaste.empty())
1275                         mathed_parse_normal(grid, topaste);
1276
1277                 if (grid.nargs() == 1) {
1278                         // single cell/part of cell
1279                         cur.recordUndo();
1280                         cur.cell().insert(cur.pos(), grid.cell(0));
1281                         cur.pos() += grid.cell(0).size();
1282                 } else {
1283                         // multiple cells
1284                         cur.recordUndoInset();
1285                         col_type const numcols =
1286                                 min(grid.ncols(), ncols() - col(cur.idx()));
1287                         row_type const numrows =
1288                                 min(grid.nrows(), nrows() - cur.row());
1289                         for (row_type r = 0; r < numrows; ++r) {
1290                                 for (col_type c = 0; c < numcols; ++c) {
1291                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1292                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1293                                 }
1294                                 // append the left over horizontal cells to the last column
1295                                 idx_type i = index(r + cur.row(), ncols() - 1);
1296                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1297                                         cell(i).append(grid.cell(grid.index(r, c)));
1298                         }
1299                         // append the left over vertical cells to the last _cell_
1300                         idx_type i = nargs() - 1;
1301                         for (row_type r = numrows; r < grid.nrows(); ++r)
1302                                 for (col_type c = 0; c < grid.ncols(); ++c)
1303                                         cell(i).append(grid.cell(grid.index(r, c)));
1304                 }
1305                 cur.clearSelection(); // bug 393
1306                 cur.finishUndo();
1307                 break;
1308         }
1309
1310         case LFUN_LINE_BEGIN_SELECT:
1311         case LFUN_LINE_BEGIN:
1312         case LFUN_WORD_BACKWARD_SELECT:
1313         case LFUN_WORD_BACKWARD:
1314         case LFUN_WORD_LEFT_SELECT:
1315         case LFUN_WORD_LEFT:
1316                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
1317                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
1318                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
1319                 cur.macroModeClose();
1320                 if (cur.pos() != 0) {
1321                         cur.pos() = 0;
1322                 } else if (cur.idx() % cur.ncols() != 0) {
1323                         cur.idx() -= cur.idx() % cur.ncols();
1324                         cur.pos() = 0;
1325                 } else if (cur.idx() != 0) {
1326                         cur.idx() = 0;
1327                         cur.pos() = 0;
1328                 } else {
1329                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1330                         cur.undispatched();
1331                 }
1332                 break;
1333
1334         case LFUN_WORD_FORWARD_SELECT:
1335         case LFUN_WORD_FORWARD:
1336         case LFUN_WORD_RIGHT_SELECT:
1337         case LFUN_WORD_RIGHT:
1338         case LFUN_LINE_END_SELECT:
1339         case LFUN_LINE_END:
1340                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
1341                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
1342                                 cmd.action == LFUN_LINE_END_SELECT);
1343                 cur.macroModeClose();
1344                 cur.clearTargetX();
1345                 if (cur.pos() != cur.lastpos()) {
1346                         cur.pos() = cur.lastpos();
1347                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1348                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1349                         cur.pos() = cur.lastpos();
1350                 } else if (cur.idx() != cur.lastidx()) {
1351                         cur.idx() = cur.lastidx();
1352                         cur.pos() = cur.lastpos();
1353                 } else {
1354                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1355                         cur.undispatched();
1356                 }
1357                 break;
1358
1359         default:
1360                 InsetMathNest::doDispatch(cur, cmd);
1361         }
1362 }
1363
1364
1365 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1366                 FuncStatus & status) const
1367 {
1368         switch (cmd.action) {
1369         case LFUN_TABULAR_FEATURE: {
1370                 string const s = to_utf8(cmd.argument());
1371                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1372                         status.enabled(false);
1373                         status.message(from_utf8(N_("Only one row")));
1374                         return true;
1375                 }
1376                 if (ncols() <= 1 &&
1377                     (s == "delete-column" || s == "swap-column")) {
1378                         status.enabled(false);
1379                         status.message(from_utf8(N_("Only one column")));
1380                         return true;
1381                 }
1382                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1383                      s == "delete-hline-above") ||
1384                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1385                      s == "delete-hline-below")) {
1386                         status.enabled(false);
1387                         status.message(from_utf8(N_("No hline to delete")));
1388                         return true;
1389                 }
1390
1391                 if ((colinfo_[cur.col()].lines_ == 0 &&
1392                      s == "delete-vline-left") ||
1393                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1394                      s == "delete-vline-right")) {
1395                         status.enabled(false);
1396                         status.message(from_utf8(N_("No vline to delete")));
1397                         return true;
1398                 }
1399                 if (s == "valign-top" || s == "valign-middle" ||
1400                     s == "valign-bottom" || s == "align-left" ||
1401                     s == "align-right" || s == "align-center" ||
1402                     s == "append-row" || s == "delete-row" ||
1403                     s == "copy-row" || s == "swap-row" ||
1404                     s == "add-hline-above" || s == "add-hline-below" ||
1405                     s == "delete-hline-above" || s == "delete-hline-below" ||
1406                     s == "append-column" || s == "delete-column" ||
1407                     s == "copy-column" || s == "swap-column" ||
1408                     s == "add-vline-left" || s == "add-vline-right" ||
1409                     s == "delete-vline-left" || s == "delete-vline-right")
1410                         status.enabled(true);
1411                 else {
1412                         status.enabled(false);
1413                         status.message(bformat(
1414                                 from_utf8(N_("Unknown tabular feature '%1$s'")), lyx::from_ascii(s)));
1415                 }
1416
1417                 status.setOnOff((s == "align-left" && halign(cur.col()) == 'l')
1418                            || (s == "align-right"   && halign(cur.col()) == 'r')
1419                            || (s == "align-center"  && halign(cur.col()) == 'c')
1420                            || (s == "valign-top"    && valign() == 't')
1421                            || (s == "valign-bottom" && valign() == 'b')
1422                            || (s == "valign-middle" && valign() == 'm'));
1423
1424 #if 0
1425                 // FIXME: What did this code do?
1426                 // Please check whether it is still needed!
1427                 // should be more precise
1428                 if (v_align_ == '\0') {
1429                         status.enable(true);
1430                         break;
1431                 }
1432                 if (cmd.argument().empty()) {
1433                         status.enable(false);
1434                         break;
1435                 }
1436                 if (!support::contains("tcb", cmd.argument()[0])) {
1437                         status.enable(false);
1438                         break;
1439                 }
1440                 status.setOnOff(cmd.argument()[0] == v_align_);
1441                 status.enabled(true);
1442 #endif
1443                 return true;
1444         }
1445
1446         case LFUN_CELL_SPLIT:
1447                 status.enabled(true);
1448                 return true;
1449
1450         case LFUN_CELL_BACKWARD:
1451         case LFUN_CELL_FORWARD:
1452                 status.enabled(true);
1453                 return true;
1454
1455         default:
1456                 return InsetMathNest::getStatus(cur, cmd, status);
1457         }
1458 }
1459
1460
1461 } // namespace lyx