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 #include <algorithm>
  13
  14 #include "InsetMathGrid.h"
  15
  16 #include "MathData.h"
  17 #include "MathParser.h"
  18 #include "MathStream.h"
  19 #include "MetricsInfo.h"
  20
  21 #include "BufferView.h"
  22 #include "CutAndPaste.h"
  23 #include "FuncStatus.h"
  24 #include "Cursor.h"
  25 #include "FuncRequest.h"
  26
  27 #include "frontends/Clipboard.h"
  28 #include "frontends/FontMetrics.h"
  29 #include "frontends/Painter.h"
  30
  31 #include "support/debug.h"
  32 #include "support/docstream.h"
  33 #include "support/gettext.h"
  34 #include "support/lstrings.h"
  35
  36 #include "support/lassert.h"
  37
  38 #include <sstream>
  39
  40 using namespace std;
  41 using namespace lyx::support;
  42
  43
  44 namespace lyx {
  45
  46 static docstring verboseHLine(int n)
  47 {
  48         docstring res;
  49         for (int i = 0; i < n; ++i)
  50                 res += "\\hline";
  51         if (n)
  52                 res += ' ';
  53         return res;
  54 }
  55
  56
  57 static int extractInt(istream & is)
  58 {
  59         int num = 1;
  60         is >> num;
  61         return (num == 0) ? 1 : num;
  62 }
  63
  64
  65 static void resetGrid(InsetMathGrid & grid)
  66 {
  67         while (grid.ncols() > 1)
  68                 grid.delCol(grid.ncols());
  69         while (grid.nrows() > 1)
  70                 grid.delRow(grid.nrows());
  71         grid.cell(0).erase(0, grid.cell(0).size());
  72         grid.setDefaults();
  73 }
  74
  75
  76
  77 //////////////////////////////////////////////////////////////
  78
  79
  80 InsetMathGrid::CellInfo::CellInfo()
  81         : dummy_(false)
  82 {}
  83
  84
  85
  86 //////////////////////////////////////////////////////////////
  87
  88
  89 InsetMathGrid::RowInfo::RowInfo()
  90         : lines_(0), skip_(0), allow_newpage_(true)
  91 {}
  92
  93
  94
  95 int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
  96 {
  97         frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
  98         return crskip_.inPixels(mi.base.textwidth,
  99                                 fm.width(char_type('M')));
 100 }
 101
 102
 103
 104 //////////////////////////////////////////////////////////////
 105
 106
 107 InsetMathGrid::ColInfo::ColInfo()
 108         : align_('c'), lines_(0)
 109 {}
 110
 111
 112 //////////////////////////////////////////////////////////////
 113
 114
 115 InsetMathGrid::InsetMathGrid()
 116         : InsetMathNest(1),
 117           rowinfo_(1 + 1),
 118                 colinfo_(1 + 1),
 119                 cellinfo_(1),
 120                 v_align_('c')
 121 {
 122         setDefaults();
 123 }
 124
 125
 126 InsetMathGrid::InsetMathGrid(col_type m, row_type n)
 127         : InsetMathNest(m * n),
 128           rowinfo_(n + 1),
 129                 colinfo_(m + 1),
 130                 cellinfo_(m * n),
 131                 v_align_('c')
 132 {
 133         setDefaults();
 134 }
 135
 136
 137 InsetMathGrid::InsetMathGrid(col_type m, row_type n, char v, docstring const & h)
 138         : InsetMathNest(m * n),
 139           rowinfo_(n + 1),
 140           colinfo_(m + 1),
 141                 cellinfo_(m * n),
 142                 v_align_(v)
 143 {
 144         setDefaults();
 145         setVerticalAlignment(v);
 146         setHorizontalAlignments(h);
 147 }
 148
 149
 150 Inset * InsetMathGrid::clone() const
 151 {
 152         return new InsetMathGrid(*this);
 153 }
 154
 155
 156 InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
 157 {
 158         return col + ncols() * row;
 159 }
 160
 161
 162 void InsetMathGrid::setDefaults()
 163 {
 164         if (ncols() <= 0)
 165                 lyxerr << "positive number of columns expected" << endl;
 166         //if (nrows() <= 0)
 167         //      lyxerr << "positive number of rows expected" << endl;
 168         for (col_type col = 0; col < ncols(); ++col) {
 169                 colinfo_[col].align_ = defaultColAlign(col);
 170                 colinfo_[col].skip_  = defaultColSpace(col);
 171                 colinfo_[col].special_.clear();
 172         }
 173 }
 174
 175
 176 void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
 177 {
 178         col_type col = 0;
 179         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 180                 char_type c = *it;
 181                 if (c == '|') {
 182                         colinfo_[col].lines_++;
 183                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 184                             c == '!' || c == '@' || c == '>' || c == '<') &&
 185                            it + 1 != hh.end() && *(it + 1) == '{') {
 186                         // @{decl.} and p{width} are standard LaTeX, the
 187                         // others are extensions by array.sty
 188                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 189                         if (newcolumn) {
 190                                 // this declares a new column
 191                                 if (col >= ncols())
 192                                         // Only intercolumn stuff is allowed
 193                                         // in the last dummy column
 194                                         break;
 195                                 colinfo_[col].align_ = 'l';
 196                         } else {
 197                                 // this is intercolumn stuff
 198                                 if (colinfo_[col].special_.empty())
 199                                         // Overtake possible lines
 200                                         colinfo_[col].special_ = docstring(colinfo_[col].lines_, '|');
 201                         }
 202                         int brace_open = 0;
 203                         int brace_close = 0;
 204                         while (it != hh.end()) {
 205                                 c = *it;
 206                                 colinfo_[col].special_ += c;
 207                                 if (c == '{')
 208                                         ++brace_open;
 209                                 else if (c == '}')
 210                                         ++brace_close;
 211                                 ++it;
 212                                 if (brace_open > 0 && brace_open == brace_close)
 213                                         break;
 214                         }
 215                         --it;
 216                         if (newcolumn) {
 217                                 colinfo_[col].lines_ = count(
 218                                         colinfo_[col].special_.begin(),
 219                                         colinfo_[col].special_.end(), '|');
 220                                 LYXERR(Debug::MATHED, "special column separator: `"
 221                                         << to_utf8(colinfo_[col].special_) << '\'');
 222                                 ++col;
 223                                 colinfo_[col].lines_ = 0;
 224                                 colinfo_[col].special_.clear();
 225                         }
 226                 } else if (col >= ncols()) {
 227                         // Only intercolumn stuff is allowed in the last
 228                         // dummy column
 229                         break;
 230                 } else if (c == 'c' || c == 'l' || c == 'r') {
 231                         colinfo_[col].align_ = static_cast<char>(c);
 232                         if (!colinfo_[col].special_.empty()) {
 233                                 colinfo_[col].special_ += c;
 234                                 colinfo_[col].lines_ = count(
 235                                                 colinfo_[col].special_.begin(),
 236                                                 colinfo_[col].special_.end(), '|');
 237                                 LYXERR(Debug::MATHED, "special column separator: `"
 238                                         << to_utf8(colinfo_[col].special_) << '\'');
 239                         }
 240                         ++col;
 241                         colinfo_[col].lines_ = 0;
 242                         colinfo_[col].special_.clear();
 243                 } else {
 244                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 245                 }
 246         }
 247
 248 /*
 249         col_type n = hh.size();
 250         if (n > ncols())
 251                 n = ncols();
 252         for (col_type col = 0; col < n; ++col)
 253                 colinfo_[col].align_ = hh[col];
 254 */
 255 }
 256
 257
 258 InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
 259 {
 260         col_type col = 0;
 261         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
 262                 if (*it == 'c' || *it == 'l' || *it == 'r'||
 263                     *it == 'p' || *it == 'm' || *it == 'b')
 264                         ++col;
 265         // let's have at least one column, even if we did not recognize its
 266         // alignment
 267         if (col == 0)
 268                 col = 1;
 269         return col;
 270 }
 271
 272
 273 void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
 274 {
 275         colinfo_[col].align_ = h;
 276         if (!colinfo_[col].special_.empty()) {
 277                 char_type & c = colinfo_[col].special_[colinfo_[col].special_.size() - 1];
 278                 if (c == 'l' || c == 'c' || c == 'r')
 279                         c = h;
 280         }
 281         // FIXME: Change alignment of p, m and b columns, too
 282 }
 283
 284
 285 char InsetMathGrid::horizontalAlignment(col_type col) const
 286 {
 287         return colinfo_[col].align_;
 288 }
 289
 290
 291 docstring InsetMathGrid::horizontalAlignments() const
 292 {
 293         docstring res;
 294         for (col_type col = 0; col < ncols(); ++col) {
 295                 if (colinfo_[col].special_.empty()) {
 296                         res += docstring(colinfo_[col].lines_, '|');
 297                         res += colinfo_[col].align_;
 298                 } else
 299                         res += colinfo_[col].special_;
 300         }
 301         if (colinfo_[ncols()].special_.empty())
 302                 return res + docstring(colinfo_[ncols()].lines_, '|');
 303         return res + colinfo_[ncols()].special_;
 304 }
 305
 306
 307 void InsetMathGrid::setVerticalAlignment(char c)
 308 {
 309         v_align_ = c;
 310 }
 311
 312
 313 char InsetMathGrid::verticalAlignment() const
 314 {
 315         return v_align_;
 316 }
 317
 318
 319 InsetMathGrid::col_type InsetMathGrid::ncols() const
 320 {
 321         return colinfo_.size() - 1;
 322 }
 323
 324
 325 InsetMathGrid::row_type InsetMathGrid::nrows() const
 326 {
 327         return rowinfo_.size() - 1;
 328 }
 329
 330
 331 InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
 332 {
 333         return idx % ncols();
 334 }
 335
 336
 337 InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
 338 {
 339         return idx / ncols();
 340 }
 341
 342
 343 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 344 {
 345         rowinfo_[row].crskip_ = crskip;
 346 }
 347
 348
 349 Length InsetMathGrid::vcrskip(row_type row) const
 350 {
 351         return rowinfo_[row].crskip_;
 352 }
 353
 354
 355 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 356 {
 357         // let the cells adjust themselves
 358         InsetMathNest::metrics(mi);
 359
 360         BufferView & bv = *mi.base.bv;
 361
 362         // compute absolute sizes of vertical structure
 363         for (row_type row = 0; row < nrows(); ++row) {
 364                 int asc  = 0;
 365                 int desc = 0;
 366                 for (col_type col = 0; col < ncols(); ++col) {
 367                         Dimension const & dimc = cell(index(row, col)).dimension(bv);
 368                         asc  = max(asc,  dimc.asc);
 369                         desc = max(desc, dimc.des);
 370                 }
 371                 rowinfo_[row].ascent_  = asc;
 372                 rowinfo_[row].descent_ = desc;
 373         }
 374         rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 375         rowinfo_[nrows()].ascent_  = 0;
 376         rowinfo_[nrows()].descent_ = 0;
 377
 378         // compute vertical offsets
 379         rowinfo_[0].offset_ = 0;
 380         for (row_type row = 1; row <= nrows(); ++row) {
 381                 rowinfo_[row].offset_  =
 382                         rowinfo_[row - 1].offset_  +
 383                         rowinfo_[row - 1].descent_ +
 384                         rowinfo_[row - 1].skipPixels(mi) +
 385                         rowsep() +
 386                         rowinfo_[row].lines_ * hlinesep() +
 387                         rowinfo_[row].ascent_;
 388         }
 389
 390         // adjust vertical offset
 391         int h = 0;
 392         switch (v_align_) {
 393                 case 't':
 394                         h = 0;
 395                         break;
 396                 case 'b':
 397                         h = rowinfo_[nrows() - 1].offset_;
 398                         break;
 399                 default:
 400                         h = rowinfo_[nrows() - 1].offset_ / 2;
 401         }
 402         for (row_type row = 0; row <= nrows(); ++row)
 403                 rowinfo_[row].offset_ -= h;
 404
 405
 406         // compute absolute sizes of horizontal structure
 407         for (col_type col = 0; col < ncols(); ++col) {
 408                 int wid = 0;
 409                 for (row_type row = 0; row < nrows(); ++row)
 410                         wid = max(wid, cell(index(row, col)).dimension(bv).wid);
 411                 colinfo_[col].width_ = wid;
 412         }
 413         colinfo_[ncols()].width_  = 0;
 414
 415         // compute horizontal offsets
 416         colinfo_[0].offset_ = border();
 417         for (col_type col = 1; col <= ncols(); ++col) {
 418                 colinfo_[col].offset_ =
 419                         colinfo_[col - 1].offset_ +
 420                         colinfo_[col - 1].width_ +
 421                         colinfo_[col - 1].skip_ +
 422                         colsep() +
 423                         colinfo_[col].lines_ * vlinesep();
 424         }
 425
 426
 427         dim.wid   =   colinfo_[ncols() - 1].offset_
 428                        + colinfo_[ncols() - 1].width_
 429                  + vlinesep() * colinfo_[ncols()].lines_
 430                        + border();
 431
 432         dim.asc  = - rowinfo_[0].offset_
 433                        + rowinfo_[0].ascent_
 434                  + hlinesep() * rowinfo_[0].lines_
 435                        + border();
 436
 437         dim.des =   rowinfo_[nrows() - 1].offset_
 438                        + rowinfo_[nrows() - 1].descent_
 439                  + hlinesep() * rowinfo_[nrows()].lines_
 440                        + border();
 441
 442
 443 /*
 444         // Increase ws_[i] for 'R' columns (except the first one)
 445         for (int i = 1; i < nc_; ++i)
 446                 if (align_[i] == 'R')
 447                         ws_[i] += 10 * df_width;
 448         // Increase ws_[i] for 'C' column
 449         if (align_[0] == 'C')
 450                 if (ws_[0] < 7 * workwidth / 8)
 451                         ws_[0] = 7 * workwidth / 8;
 452
 453         // Adjust local tabs
 454         width = colsep();
 455         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 456                 int rg = COLSEP;
 457                 int lf = 0;
 458                 for (int i = 0; i < nc_; ++i) {
 459                         bool isvoid = false;
 460                         if (cxrow->getTab(i) <= 0) {
 461                                 cxrow->setTab(i, df_width);
 462                                 isvoid = true;
 463                         }
 464                         switch (align_[i]) {
 465                         case 'l':
 466                                 lf = 0;
 467                                 break;
 468                         case 'c':
 469                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 470                                 break;
 471                         case 'r':
 472                         case 'R':
 473                                 lf = ws_[i] - cxrow->getTab(i);
 474                                 break;
 475                         case 'C':
 476                                 if (cxrow == row_.begin())
 477                                         lf = 0;
 478                                 else if (cxrow.is_last())
 479                                         lf = ws_[i] - cxrow->getTab(i);
 480                                 else
 481                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 482                                 break;
 483                         }
 484                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 485                         cxrow->setTab(i, lf + rg);
 486                         rg = ws_[i] - ww + colsep();
 487                         if (cxrow == row_.begin())
 488                                 width += ws_[i] + colsep();
 489                 }
 490                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 491         }
 492 */
 493         metricsMarkers2(dim);
 494         // Cache the inset dimension.
 495         setDimCache(mi, dim);
 496 }
 497
 498
 499 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 500 {
 501         drawWithMargin(pi, x, y, 1, 1);
 502 }
 503
 504
 505 void InsetMathGrid::drawWithMargin(PainterInfo & pi, int x, int y,
 506         int lmargin, int rmargin) const
 507 {
 508         Dimension const dim = dimension(*pi.base.bv);
 509         BufferView const & bv = *pi.base.bv;
 510
 511         for (idx_type idx = 0; idx < nargs(); ++idx)
 512                 cell(idx).draw(pi, x + lmargin + cellXOffset(bv, idx),
 513                         y + cellYOffset(idx));
 514
 515         for (row_type row = 0; row <= nrows(); ++row)
 516                 for (unsigned int i = 0; i < rowinfo_[row].lines_; ++i) {
 517                         int yy = y + rowinfo_[row].offset_ - rowinfo_[row].ascent_
 518                                 - i * hlinesep() - hlinesep()/2 - rowsep()/2;
 519                         pi.pain.line(x + lmargin + 1, yy,
 520                                      x + dim.width() - rmargin - 1, yy,
 521                                      Color_foreground);
 522                 }
 523
 524         for (col_type col = 0; col <= ncols(); ++col)
 525                 for (unsigned int i = 0; i < colinfo_[col].lines_; ++i) {
 526                         int xx = x + lmargin + colinfo_[col].offset_
 527                                 - i * vlinesep() - vlinesep()/2 - colsep()/2;
 528                         pi.pain.line(xx, y - dim.ascent() + 1,
 529                                      xx, y + dim.descent() - 1,
 530                                      Color_foreground);
 531                 }
 532         drawMarkers2(pi, x, y);
 533 }
 534
 535
 536 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 537 {
 538         // let the cells adjust themselves
 539         //InsetMathNest::metrics(mi);
 540         for (idx_type i = 0; i < nargs(); ++i)
 541                 cell(i).metricsT(mi, dim);
 542
 543         // compute absolute sizes of vertical structure
 544         for (row_type row = 0; row < nrows(); ++row) {
 545                 int asc  = 0;
 546                 int desc = 0;
 547                 for (col_type col = 0; col < ncols(); ++col) {
 548                         //MathData const & c = cell(index(row, col));
 549                         // FIXME: BROKEN!
 550                         Dimension dimc;
 551                         asc  = max(asc,  dimc.ascent());
 552                         desc = max(desc, dimc.descent());
 553                 }
 554                 rowinfo_[row].ascent_  = asc;
 555                 rowinfo_[row].descent_ = desc;
 556         }
 557         //rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 558         rowinfo_[nrows()].ascent_  = 0;
 559         rowinfo_[nrows()].descent_ = 0;
 560
 561         // compute vertical offsets
 562         rowinfo_[0].offset_ = 0;
 563         for (row_type row = 1; row <= nrows(); ++row) {
 564                 rowinfo_[row].offset_  =
 565                         rowinfo_[row - 1].offset_  +
 566                         rowinfo_[row - 1].descent_ +
 567                         //rowinfo_[row - 1].skipPixels(mi) +
 568                         1 + //rowsep() +
 569                         //rowinfo_[row].lines_ * hlinesep() +
 570                         rowinfo_[row].ascent_;
 571         }
 572
 573         // adjust vertical offset
 574         int h = 0;
 575         switch (v_align_) {
 576                 case 't':
 577                         h = 0;
 578                         break;
 579                 case 'b':
 580                         h = rowinfo_[nrows() - 1].offset_;
 581                         break;
 582                 default:
 583                         h = rowinfo_[nrows() - 1].offset_ / 2;
 584         }
 585         for (row_type row = 0; row <= nrows(); ++row)
 586                 rowinfo_[row].offset_ -= h;
 587
 588
 589         // compute absolute sizes of horizontal structure
 590         for (col_type col = 0; col < ncols(); ++col) {
 591                 int wid = 0;
 592                 for (row_type row = 0; row < nrows(); ++row) {
 593                         // FIXME: BROKEN!
 594                         //wid = max(wid, cell(index(row, col)).width());
 595                 }
 596                 colinfo_[col].width_ = wid;
 597         }
 598         colinfo_[ncols()].width_  = 0;
 599
 600         // compute horizontal offsets
 601         colinfo_[0].offset_ = border();
 602         for (col_type col = 1; col <= ncols(); ++col) {
 603                 colinfo_[col].offset_ =
 604                         colinfo_[col - 1].offset_ +
 605                         colinfo_[col - 1].width_ +
 606                         colinfo_[col - 1].skip_ +
 607                         1 ; //colsep() +
 608                         //colinfo_[col].lines_ * vlinesep();
 609         }
 610
 611
 612         dim.wid  =  colinfo_[ncols() - 1].offset_
 613                        + colinfo_[ncols() - 1].width_
 614                  //+ vlinesep() * colinfo_[ncols()].lines_
 615                        + 2;
 616
 617         dim.asc  = -rowinfo_[0].offset_
 618                        + rowinfo_[0].ascent_
 619                  //+ hlinesep() * rowinfo_[0].lines_
 620                        + 1;
 621
 622         dim.des  =  rowinfo_[nrows() - 1].offset_
 623                        + rowinfo_[nrows() - 1].descent_
 624                  //+ hlinesep() * rowinfo_[nrows()].lines_
 625                        + 1;
 626 }
 627
 628
 629 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 630 {
 631 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 632 //              cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 633 }
 634
 635
 636 docstring InsetMathGrid::eolString(row_type row, bool emptyline, bool fragile) const
 637 {
 638         docstring eol;
 639
 640         if (!rowinfo_[row].crskip_.zero())
 641                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 642         else if(!rowinfo_[row].allow_newpage_)
 643                 eol += '*';
 644
 645         // make sure an upcoming '[' does not break anything
 646         if (row + 1 < nrows()) {
 647                 MathData const & c = cell(index(row + 1, 0));
 648                 if (c.size() && c.front()->getChar() == '[')
 649                         //eol += "[0pt]";
 650                         eol += "{}";
 651         }
 652
 653         // only add \\ if necessary
 654         if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !emptyline))
 655                 return docstring();
 656
 657         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 658 }
 659
 660
 661 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 662 {
 663         if (col + 1 == lastcol)
 664                 return docstring();
 665         return from_ascii(" & ");
 666 }
 667
 668
 669 void InsetMathGrid::addRow(row_type row)
 670 {
 671         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 672         cells_.insert
 673                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
 674         cellinfo_.insert
 675                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 676 }
 677
 678
 679 void InsetMathGrid::appendRow()
 680 {
 681         rowinfo_.push_back(RowInfo());
 682         //cells_.insert(cells_.end(), ncols(), MathData());
 683         for (col_type col = 0; col < ncols(); ++col) {
 684                 cells_.push_back(cells_type::value_type());
 685                 cellinfo_.push_back(CellInfo());
 686         }
 687 }
 688
 689
 690 void InsetMathGrid::delRow(row_type row)
 691 {
 692         if (nrows() == 1)
 693                 return;
 694
 695         cells_type::iterator it = cells_.begin() + row * ncols();
 696         cells_.erase(it, it + ncols());
 697
 698         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 699         cellinfo_.erase(jt, jt + ncols());
 700
 701         rowinfo_.erase(rowinfo_.begin() + row);
 702 }
 703
 704
 705 void InsetMathGrid::copyRow(row_type row)
 706 {
 707         addRow(row);
 708         for (col_type col = 0; col < ncols(); ++col)
 709                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 710 }
 711
 712
 713 void InsetMathGrid::swapRow(row_type row)
 714 {
 715         if (nrows() == 1)
 716                 return;
 717         if (row + 1 == nrows())
 718                 --row;
 719         for (col_type col = 0; col < ncols(); ++col)
 720                 swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + col]);
 721 }
 722
 723
 724 void InsetMathGrid::addCol(col_type newcol)
 725 {
 726         const col_type nc = ncols();
 727         const row_type nr = nrows();
 728         cells_type new_cells((nc + 1) * nr);
 729         vector<CellInfo> new_cellinfo((nc + 1) * nr);
 730
 731         for (row_type row = 0; row < nr; ++row)
 732                 for (col_type col = 0; col < nc; ++col) {
 733                         new_cells[row * (nc + 1) + col + (col >= newcol)]
 734                                 = cells_[row * nc + col];
 735                         new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
 736                                 = cellinfo_[row * nc + col];
 737                 }
 738         swap(cells_, new_cells);
 739         swap(cellinfo_, new_cellinfo);
 740
 741         ColInfo inf;
 742         inf.skip_  = defaultColSpace(newcol);
 743         inf.align_ = defaultColAlign(newcol);
 744         colinfo_.insert(colinfo_.begin() + newcol, inf);
 745 }
 746
 747
 748 void InsetMathGrid::delCol(col_type col)
 749 {
 750         if (ncols() == 1)
 751                 return;
 752
 753         cells_type tmpcells;
 754         vector<CellInfo> tmpcellinfo;
 755         for (col_type i = 0; i < nargs(); ++i)
 756                 if (i % ncols() != col) {
 757                         tmpcells.push_back(cells_[i]);
 758                         tmpcellinfo.push_back(cellinfo_[i]);
 759                 }
 760         swap(cells_, tmpcells);
 761         swap(cellinfo_, tmpcellinfo);
 762
 763         colinfo_.erase(colinfo_.begin() + col);
 764 }
 765
 766
 767 void InsetMathGrid::copyCol(col_type col)
 768 {
 769         addCol(col+1);
 770         for (row_type row = 0; row < nrows(); ++row)
 771                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 772 }
 773
 774
 775 void InsetMathGrid::swapCol(col_type col)
 776 {
 777         if (ncols() == 1)
 778                 return;
 779         if (col + 1 == ncols())
 780                 --col;
 781         for (row_type row = 0; row < nrows(); ++row)
 782                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 783 }
 784
 785
 786 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 787 {
 788         col_type c = col(idx);
 789         int x = colinfo_[c].offset_;
 790         char align = colinfo_[c].align_;
 791         Dimension const & celldim = cell(idx).dimension(bv);
 792         if (align == 'r' || align == 'R')
 793                 x += colinfo_[c].width_ - celldim.wid;
 794         if (align == 'c' || align == 'C')
 795                 x += (colinfo_[c].width_ - celldim.wid) / 2;
 796         return x;
 797 }
 798
 799
 800 int InsetMathGrid::cellYOffset(idx_type idx) const
 801 {
 802         return rowinfo_[row(idx)].offset_;
 803 }
 804
 805
 806 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 807 {
 808         if (up) {
 809                 if (cur.row() == 0)
 810                         return false;
 811                 cur.idx() -= ncols();
 812         } else {
 813                 if (cur.row() + 1 >= nrows())
 814                         return false;
 815                 cur.idx() += ncols();
 816         }
 817         cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - cur.cell().xo(cur.bv()));
 818         return true;
 819 }
 820
 821
 822 bool InsetMathGrid::idxBackward(Cursor & cur) const
 823 {
 824         // leave matrix if at the front edge
 825         if (cur.col() == 0)
 826                 return false;
 827         --cur.idx();
 828         cur.pos() = cur.lastpos();
 829         return true;
 830 }
 831
 832
 833 bool InsetMathGrid::idxForward(Cursor & cur) const
 834 {
 835         // leave matrix if at the back edge
 836         if (cur.col() + 1 == ncols())
 837                 return false;
 838         ++cur.idx();
 839         cur.pos() = 0;
 840         return true;
 841 }
 842
 843
 844 bool InsetMathGrid::idxFirst(Cursor & cur) const
 845 {
 846         switch (v_align_) {
 847                 case 't':
 848                         cur.idx() = 0;
 849                         break;
 850                 case 'b':
 851                         cur.idx() = (nrows() - 1) * ncols();
 852                         break;
 853                 default:
 854                         cur.idx() = ((nrows() - 1) / 2) * ncols();
 855         }
 856         cur.pos() = 0;
 857         return true;
 858 }
 859
 860
 861 bool InsetMathGrid::idxLast(Cursor & cur) const
 862 {
 863         switch (v_align_) {
 864                 case 't':
 865                         cur.idx() = ncols() - 1;
 866                         break;
 867                 case 'b':
 868                         cur.idx() = nargs() - 1;
 869                         break;
 870                 default:
 871                         cur.idx() = ((nrows() - 1) / 2 + 1) * ncols() - 1;
 872         }
 873         cur.pos() = cur.lastpos();
 874         return true;
 875 }
 876
 877
 878 bool InsetMathGrid::idxDelete(idx_type & idx)
 879 {
 880         // nothing to do if we have just one row
 881         if (nrows() == 1)
 882                 return false;
 883
 884         // nothing to do if we are in the middle of the last row of the inset
 885         if (idx + ncols() > nargs())
 886                 return false;
 887
 888         // try to delete entire sequence of ncols() empty cells if possible
 889         for (idx_type i = idx; i < idx + ncols(); ++i)
 890                 if (cell(i).size())
 891                         return false;
 892
 893         // move cells if necessary
 894         for (idx_type i = index(row(idx), 0); i < idx; ++i)
 895                 swap(cell(i), cell(i + ncols()));
 896
 897         delRow(row(idx));
 898
 899         if (idx >= nargs())
 900                 idx = nargs() - 1;
 901
 902         // undo effect of Ctrl-Tab (i.e. pull next cell)
 903         //if (idx + 1 != nargs())
 904         //      cell(idx).swap(cell(idx + 1));
 905
 906         // we handled the event..
 907         return true;
 908 }
 909
 910
 911 // reimplement old behaviour when pressing Delete in the last position
 912 // of a cell
 913 void InsetMathGrid::idxGlue(idx_type idx)
 914 {
 915         col_type c = col(idx);
 916         if (c + 1 == ncols()) {
 917                 if (row(idx) + 1 != nrows()) {
 918                         for (col_type cc = 0; cc < ncols(); ++cc)
 919                                 cell(idx).append(cell(idx + cc + 1));
 920                         delRow(row(idx) + 1);
 921                 }
 922         } else {
 923                 cell(idx).append(cell(idx + 1));
 924                 for (col_type cc = c + 2; cc < ncols(); ++cc)
 925                         cell(idx - c + cc - 1) = cell(idx - c + cc);
 926                 cell(idx - c + ncols() - 1).clear();
 927         }
 928 }
 929
 930
 931 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
 932 {
 933         return rowinfo_[row];
 934 }
 935
 936
 937 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
 938 {
 939         return rowinfo_[row];
 940 }
 941
 942
 943 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
 944 {
 945         row_type const ri = row(idx);
 946         row_type const r1 = min(row(from), row(to));
 947         row_type const r2 = max(row(from), row(to));
 948         col_type const ci = col(idx);
 949         col_type const c1 = min(col(from), col(to));
 950         col_type const c2 = max(col(from), col(to));
 951         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
 952 }
 953
 954
 955
 956 void InsetMathGrid::normalize(NormalStream & os) const
 957 {
 958         os << "[grid ";
 959         for (row_type row = 0; row < nrows(); ++row) {
 960                 os << "[row ";
 961                 for (col_type col = 0; col < ncols(); ++col)
 962                         os << "[cell " << cell(index(row, col)) << ']';
 963                 os << ']';
 964         }
 965         os << ']';
 966 }
 967
 968
 969 void InsetMathGrid::mathmlize(MathStream & os) const
 970 {
 971         os << MTag("mtable");
 972         for (row_type row = 0; row < nrows(); ++row) {
 973                 os << MTag("mtr");
 974                 for (col_type col = 0; col < ncols(); ++col)
 975                         os << cell(index(row, col));
 976                 os << ETag("mtr");
 977         }
 978         os << ETag("mtable");
 979 }
 980
 981
 982 void InsetMathGrid::write(WriteStream & os) const
 983 {
 984         write(os, 0, 0, nrows(), ncols());
 985 }
 986
 987 void InsetMathGrid::write(WriteStream & os,
 988                           row_type beg_row, col_type beg_col,
 989                           row_type end_row, col_type end_col) const
 990 {
 991         MathEnsurer ensurer(os, false);
 992         docstring eol;
 993         for (row_type row = beg_row; row < end_row; ++row) {
 994                 os << verboseHLine(rowinfo_[row].lines_);
 995                 // don't write & and empty cells at end of line
 996                 col_type lastcol = 0;
 997                 bool emptyline = true;
 998                 for (col_type col = beg_col; col < end_col; ++col)
 999                         if (!cell(index(row, col)).empty()) {
1000                                 lastcol = col + 1;
1001                                 emptyline = false;
1002                         }
1003                 for (col_type col = beg_col; col < lastcol; ++col) {
1004                         os << cell(index(row, col));
1005                         if (os.pendingBrace())
1006                                 ModeSpecifier specifier(os, TEXT_MODE);
1007                         os << eocString(col, lastcol);
1008                 }
1009                 eol = eolString(row, emptyline, os.fragile());
1010                 os << eol;
1011                 // append newline only if line wasn't completely empty
1012                 // and this was not the last line in the grid
1013                 if (!emptyline && row + 1 < end_row)
1014                         os << "\n";
1015         }
1016         // @TODO use end_row instead of nrows() ?
1017         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1018         if (!s.empty()) {
1019                 if (eol.empty()) {
1020                         if (os.fragile())
1021                                 os << "\\protect";
1022                         os << "\\\\";
1023                 }
1024                 os << s;
1025         }
1026 }
1027
1028
1029 int InsetMathGrid::colsep() const
1030 {
1031         return 6;
1032 }
1033
1034
1035 int InsetMathGrid::rowsep() const
1036 {
1037         return 6;
1038 }
1039
1040
1041 int InsetMathGrid::hlinesep() const
1042 {
1043         return 3;
1044 }
1045
1046
1047 int InsetMathGrid::vlinesep() const
1048 {
1049         return 3;
1050 }
1051
1052
1053 int InsetMathGrid::border() const
1054 {
1055         return 1;
1056 }
1057
1058
1059 void InsetMathGrid::splitCell(Cursor & cur)
1060 {
1061         if (cur.idx() == cur.lastidx())
1062                 return;
1063         MathData ar = cur.cell();
1064         ar.erase(0, cur.pos());
1065         cur.cell().erase(cur.pos(), cur.lastpos());
1066         ++cur.idx();
1067         cur.pos() = 0;
1068         cur.cell().insert(0, ar);
1069 }
1070
1071
1072 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1073 {
1074         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1075
1076         Parse::flags parseflg = Parse::QUIET;
1077
1078         switch (cmd.action) {
1079
1080         // insert file functions
1081         case LFUN_LINE_DELETE:
1082                 cur.recordUndoInset();
1083                 //autocorrect_ = false;
1084                 //macroModeClose();
1085                 //if (selection_) {
1086                 //      selDel();
1087                 //      break;
1088                 //}
1089                 if (nrows() > 1)
1090                         delRow(cur.row());
1091                 if (cur.idx() > cur.lastidx())
1092                         cur.idx() = cur.lastidx();
1093                 if (cur.pos() > cur.lastpos())
1094                         cur.pos() = cur.lastpos();
1095                 break;
1096
1097         case LFUN_CELL_SPLIT:
1098                 cur.recordUndo();
1099                 splitCell(cur);
1100                 break;
1101
1102         case LFUN_CELL_BACKWARD:
1103                 // See below.
1104                 cur.setSelection(false);
1105                 if (!idxPrev(cur)) {
1106                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1107                         cur.undispatched();
1108                 }
1109                 break;
1110
1111         case LFUN_CELL_FORWARD:
1112                 // Can't handle selection by additional 'shift' as this is
1113                 // hard bound to LFUN_CELL_BACKWARD
1114                 cur.setSelection(false);
1115                 if (!idxNext(cur)) {
1116                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1117                         cur.undispatched();
1118                 }
1119                 break;
1120
1121         case LFUN_NEWLINE_INSERT: {
1122                 cur.recordUndoInset();
1123                 row_type const r = cur.row();
1124                 addRow(r);
1125
1126                 // split line
1127                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1128                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1129
1130                 // split cell
1131                 splitCell(cur);
1132                 swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1133                 if (cur.idx() > 0)
1134                         --cur.idx();
1135                 cur.pos() = cur.lastpos();
1136
1137                 //mathcursor->normalize();
1138                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1139                 break;
1140         }
1141
1142         case LFUN_TABULAR_FEATURE: {
1143                 cur.recordUndoInset();
1144                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1145                 istringstream is(to_utf8(cmd.argument()));
1146                 string s;
1147                 is >> s;
1148                 if (s == "valign-top")
1149                         setVerticalAlignment('t');
1150                 else if (s == "valign-middle")
1151                         setVerticalAlignment('c');
1152                 else if (s == "valign-bottom")
1153                         setVerticalAlignment('b');
1154                 else if (s == "align-left")
1155                         setHorizontalAlignment('l', cur.col());
1156                 else if (s == "align-right")
1157                         setHorizontalAlignment('r', cur.col());
1158                 else if (s == "align-center")
1159                         setHorizontalAlignment('c', cur.col());
1160                 else if (s == "append-row")
1161                         for (int i = 0, n = extractInt(is); i < n; ++i)
1162                                 addRow(cur.row());
1163                 else if (s == "delete-row") {
1164                         cur.clearSelection(); // bug 4323
1165                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1166                                 delRow(cur.row());
1167                                 if (cur.idx() >= nargs())
1168                                         cur.idx() -= ncols();
1169                         }
1170                         cur.pos() = 0; // trick, see below
1171                 }
1172                 else if (s == "copy-row") {
1173                         // Here (as later) we save the cursor col/row
1174                         // in order to restore it after operation.
1175                         row_type const r = cur.row();
1176                         col_type const c = cur.col();
1177                         for (int i = 0, n = extractInt(is); i < n; ++i)
1178                                 copyRow(cur.row());
1179                         cur.idx() = index(r, c);
1180                 }
1181                 else if (s == "swap-row") {
1182                         swapRow(cur.row());
1183                         // Trick to suppress same-idx-means-different-cell
1184                         // assertion crash:
1185                         cur.pos() = 0;
1186                 }
1187                 else if (s == "add-hline-above")
1188                         rowinfo_[cur.row()].lines_++;
1189                 else if (s == "add-hline-below")
1190                         rowinfo_[cur.row()+1].lines_++;
1191                 else if (s == "delete-hline-above")
1192                         rowinfo_[cur.row()].lines_--;
1193                 else if (s == "delete-hline-below")
1194                         rowinfo_[cur.row()+1].lines_--;
1195                 else if (s == "append-column") {
1196                         row_type const r = cur.row();
1197                         col_type const c = cur.col();
1198                         for (int i = 0, n = extractInt(is); i < n; ++i)
1199                                 addCol(cur.col() + 1);
1200                         cur.idx() = index(r, c);
1201                 }
1202                 else if (s == "delete-column") {
1203                         cur.clearSelection(); // bug 4323
1204                         row_type const r = cur.row();
1205                         col_type const c = cur.col();
1206                         for (int i = 0, n = extractInt(is); i < n; ++i)
1207                                 delCol(col(cur.idx()));
1208                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1209                         cur.pos() = 0; // trick, see above
1210                 }
1211                 else if (s == "copy-column") {
1212                         row_type const r = cur.row();
1213                         col_type const c = cur.col();
1214                         copyCol(cur.col());
1215                         cur.idx() = index(r, c);
1216                 }
1217                 else if (s == "swap-column") {
1218                         swapCol(cur.col());
1219                         cur.pos() = 0; // trick, see above
1220                 }
1221                 else if (s == "add-vline-left") {
1222                         colinfo_[cur.col()].lines_++;
1223                         if (!colinfo_[cur.col()].special_.empty())
1224                                 colinfo_[cur.col()].special_ += '|';
1225                 }
1226                 else if (s == "add-vline-right") {
1227                         colinfo_[cur.col()+1].lines_++;
1228                         if (!colinfo_[cur.col()+1].special_.empty())
1229                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1230                 }
1231                 else if (s == "delete-vline-left") {
1232                         colinfo_[cur.col()].lines_--;
1233                         docstring & special = colinfo_[cur.col()].special_;
1234                         if (!special.empty()) {
1235                                 docstring::size_type i = special.rfind('|');
1236                                 LASSERT(i != docstring::npos, /**/);
1237                                 special.erase(i, 1);
1238                         }
1239                 }
1240                 else if (s == "delete-vline-right") {
1241                         colinfo_[cur.col()+1].lines_--;
1242                         docstring & special = colinfo_[cur.col()+1].special_;
1243                         if (!special.empty()) {
1244                                 docstring::size_type i = special.find('|');
1245                                 LASSERT(i != docstring::npos, /**/);
1246                                 special.erase(i, 1);
1247                         }
1248                 }
1249                 else {
1250                         cur.undispatched();
1251                         break;
1252                 }
1253                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1254                 lyxerr << "returning FINISHED_LEFT" << endl;
1255                 break;
1256         }
1257
1258         case LFUN_CLIPBOARD_PASTE:
1259                 parseflg |= Parse::VERBATIM;
1260                 // fall through
1261         case LFUN_PASTE: {
1262                 if (cur.currentMode() == TEXT_MODE)
1263                         parseflg |= Parse::TEXTMODE;
1264                 cur.message(_("Paste"));
1265                 cap::replaceSelection(cur);
1266                 docstring topaste;
1267                 if (cmd.argument().empty() && !theClipboard().isInternal())
1268                         topaste = theClipboard().getAsText();
1269                 else {
1270                         idocstringstream is(cmd.argument());
1271                         int n = 0;
1272                         is >> n;
1273                         topaste = cap::selection(n);
1274                 }
1275                 InsetMathGrid grid(1, 1);
1276                 if (!topaste.empty())
1277                         if (topaste.size() == 1
1278                             || !mathed_parse_normal(grid, topaste, parseflg)) {
1279                                 resetGrid(grid);
1280                                 mathed_parse_normal(grid, topaste,
1281                                                 parseflg | Parse::VERBATIM);
1282                         }
1283
1284                 if (grid.nargs() == 1) {
1285                         // single cell/part of cell
1286                         cur.recordUndo();
1287                         cur.cell().insert(cur.pos(), grid.cell(0));
1288                         cur.pos() += grid.cell(0).size();
1289                 } else {
1290                         // multiple cells
1291                         cur.recordUndoInset();
1292                         col_type const numcols =
1293                                 min(grid.ncols(), ncols() - col(cur.idx()));
1294                         row_type const numrows =
1295                                 min(grid.nrows(), nrows() - cur.row());
1296                         for (row_type r = 0; r < numrows; ++r) {
1297                                 for (col_type c = 0; c < numcols; ++c) {
1298                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1299                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1300                                 }
1301                                 // append the left over horizontal cells to the last column
1302                                 idx_type i = index(r + cur.row(), ncols() - 1);
1303                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1304                                         cell(i).append(grid.cell(grid.index(r, c)));
1305                         }
1306                         // append the left over vertical cells to the last _cell_
1307                         idx_type i = nargs() - 1;
1308                         for (row_type r = numrows; r < grid.nrows(); ++r)
1309                                 for (col_type c = 0; c < grid.ncols(); ++c)
1310                                         cell(i).append(grid.cell(grid.index(r, c)));
1311                 }
1312                 cur.clearSelection(); // bug 393
1313                 cur.finishUndo();
1314                 break;
1315         }
1316
1317         case LFUN_LINE_BEGIN_SELECT:
1318         case LFUN_LINE_BEGIN:
1319         case LFUN_WORD_BACKWARD_SELECT:
1320         case LFUN_WORD_BACKWARD:
1321         case LFUN_WORD_LEFT_SELECT:
1322         case LFUN_WORD_LEFT:
1323                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
1324                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
1325                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
1326                 cur.macroModeClose();
1327                 if (cur.pos() != 0) {
1328                         cur.pos() = 0;
1329                 } else if (cur.idx() % cur.ncols() != 0) {
1330                         cur.idx() -= cur.idx() % cur.ncols();
1331                         cur.pos() = 0;
1332                 } else if (cur.idx() != 0) {
1333                         cur.idx() = 0;
1334                         cur.pos() = 0;
1335                 } else {
1336                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1337                         cur.undispatched();
1338                 }
1339                 break;
1340
1341         case LFUN_WORD_FORWARD_SELECT:
1342         case LFUN_WORD_FORWARD:
1343         case LFUN_WORD_RIGHT_SELECT:
1344         case LFUN_WORD_RIGHT:
1345         case LFUN_LINE_END_SELECT:
1346         case LFUN_LINE_END:
1347                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
1348                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
1349                                 cmd.action == LFUN_LINE_END_SELECT);
1350                 cur.macroModeClose();
1351                 cur.clearTargetX();
1352                 if (cur.pos() != cur.lastpos()) {
1353                         cur.pos() = cur.lastpos();
1354                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1355                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1356                         cur.pos() = cur.lastpos();
1357                 } else if (cur.idx() != cur.lastidx()) {
1358                         cur.idx() = cur.lastidx();
1359                         cur.pos() = cur.lastpos();
1360                 } else {
1361                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1362                         cur.undispatched();
1363                 }
1364                 break;
1365
1366         default:
1367                 InsetMathNest::doDispatch(cur, cmd);
1368         }
1369 }
1370
1371
1372 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1373                 FuncStatus & status) const
1374 {
1375         switch (cmd.action) {
1376         case LFUN_TABULAR_FEATURE: {
1377                 string const s = cmd.getArg(0);
1378                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1379                         status.setEnabled(false);
1380                         status.message(from_utf8(N_("Only one row")));
1381                         return true;
1382                 }
1383                 if (ncols() <= 1 &&
1384                     (s == "delete-column" || s == "swap-column")) {
1385                         status.setEnabled(false);
1386                         status.message(from_utf8(N_("Only one column")));
1387                         return true;
1388                 }
1389                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1390                      s == "delete-hline-above") ||
1391                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1392                      s == "delete-hline-below")) {
1393                         status.setEnabled(false);
1394                         status.message(from_utf8(N_("No hline to delete")));
1395                         return true;
1396                 }
1397
1398                 if ((colinfo_[cur.col()].lines_ == 0 &&
1399                      s == "delete-vline-left") ||
1400                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1401                      s == "delete-vline-right")) {
1402                         status.setEnabled(false);
1403                         status.message(from_utf8(N_("No vline to delete")));
1404                         return true;
1405                 }
1406                 if (s == "valign-top" || s == "valign-middle" ||
1407                     s == "valign-bottom" || s == "align-left" ||
1408                     s == "align-right" || s == "align-center") {
1409                         status.setEnabled(true);
1410                         char const ha = horizontalAlignment(cur.col());
1411                         char const va = verticalAlignment();
1412                         status.setOnOff((s == "align-left" && ha == 'l')
1413                                         || (s == "align-right"   && ha == 'r')
1414                                         || (s == "align-center"  && ha == 'c')
1415                                         || (s == "valign-top"    && va == 't')
1416                                         || (s == "valign-bottom" && va == 'b')
1417                                         || (s == "valign-middle" && va == 'm'));
1418                 }
1419                 if (s == "append-row" || s == "delete-row" ||
1420                     s == "copy-row" || s == "swap-row" ||
1421                     s == "add-hline-above" || s == "add-hline-below" ||
1422                     s == "delete-hline-above" || s == "delete-hline-below" ||
1423                     s == "append-column" || s == "delete-column" ||
1424                     s == "copy-column" || s == "swap-column" ||
1425                     s == "add-vline-left" || s == "add-vline-right" ||
1426                     s == "delete-vline-left" || s == "delete-vline-right")
1427                         status.setEnabled(true);
1428                 else {
1429                         status.setEnabled(false);
1430                         status.message(bformat(
1431                                 from_utf8(N_("Unknown tabular feature '%1$s'")), lyx::from_ascii(s)));
1432                 }
1433
1434 #if 0
1435                 // FIXME: What did this code do?
1436                 // Please check whether it is still needed!
1437                 // should be more precise
1438                 if (v_align_ == '\0') {
1439                         status.enable(true);
1440                         break;
1441                 }
1442                 if (cmd.argument().empty()) {
1443                         status.enable(false);
1444                         break;
1445                 }
1446                 if (!contains("tcb", cmd.argument()[0])) {
1447                         status.enable(false);
1448                         break;
1449                 }
1450                 status.setOnOff(cmd.argument()[0] == v_align_);
1451                 status.setEnabled(true);
1452 #endif
1453                 return true;
1454         }
1455
1456         case LFUN_CELL_SPLIT:
1457                 status.setEnabled(true);
1458                 return true;
1459
1460         case LFUN_CELL_BACKWARD:
1461         case LFUN_CELL_FORWARD:
1462                 status.setEnabled(true);
1463                 return true;
1464
1465         default:
1466                 return InsetMathNest::getStatus(cur, cmd, status);
1467         }
1468 }
1469
1470
1471 } // namespace lyx