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 "MathExtern.h"
  18 #include "MathParser.h"
  19 #include "MathStream.h"
  20 #include "MetricsInfo.h"
  21
  22 #include "BufferView.h"
  23 #include "CutAndPaste.h"
  24 #include "FuncStatus.h"
  25 #include "Cursor.h"
  26 #include "FuncRequest.h"
  27
  28 #include "frontends/Clipboard.h"
  29 #include "frontends/FontMetrics.h"
  30 #include "frontends/Painter.h"
  31
  32 #include "support/debug.h"
  33 #include "support/docstream.h"
  34 #include "support/gettext.h"
  35 #include "support/lstrings.h"
  36
  37 #include "support/lassert.h"
  38
  39 #include <sstream>
  40
  41 using namespace std;
  42 using namespace lyx::support;
  43
  44
  45 namespace lyx {
  46
  47 static docstring verboseHLine(int n)
  48 {
  49         docstring res;
  50         for (int i = 0; i < n; ++i)
  51                 res += "\\hline";
  52         if (n)
  53                 res += ' ';
  54         return res;
  55 }
  56
  57
  58 static int extractInt(istream & is)
  59 {
  60         int num = 1;
  61         is >> num;
  62         return (num == 0) ? 1 : num;
  63 }
  64
  65
  66 static void resetGrid(InsetMathGrid & grid)
  67 {
  68         while (grid.ncols() > 1)
  69                 grid.delCol(grid.ncols());
  70         while (grid.nrows() > 1)
  71                 grid.delRow(grid.nrows());
  72         grid.cell(0).erase(0, grid.cell(0).size());
  73         grid.setDefaults();
  74 }
  75
  76
  77
  78 //////////////////////////////////////////////////////////////
  79
  80
  81 InsetMathGrid::CellInfo::CellInfo()
  82         : dummy_(false)
  83 {}
  84
  85
  86
  87 //////////////////////////////////////////////////////////////
  88
  89
  90 InsetMathGrid::RowInfo::RowInfo()
  91         : lines_(0), skip_(0), allow_newpage_(true)
  92 {}
  93
  94
  95
  96 int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
  97 {
  98         frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
  99         return crskip_.inPixels(mi.base.textwidth,
 100                                 fm.width(char_type('M')));
 101 }
 102
 103
 104
 105 //////////////////////////////////////////////////////////////
 106
 107
 108 InsetMathGrid::ColInfo::ColInfo()
 109         : align_('c'), lines_(0)
 110 {}
 111
 112
 113 //////////////////////////////////////////////////////////////
 114
 115
 116 InsetMathGrid::InsetMathGrid(Buffer * buf)
 117         : InsetMathNest(buf, 1),
 118           rowinfo_(1 + 1),
 119                 colinfo_(1 + 1),
 120                 cellinfo_(1),
 121                 v_align_('c')
 122 {
 123         setDefaults();
 124 }
 125
 126
 127 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
 128         : InsetMathNest(buf, m * n),
 129           rowinfo_(n + 1),
 130                 colinfo_(m + 1),
 131                 cellinfo_(m * n),
 132                 v_align_('c')
 133 {
 134         setDefaults();
 135 }
 136
 137
 138 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
 139         docstring const & h)
 140         : InsetMathNest(buf, m * n),
 141           rowinfo_(n + 1),
 142           colinfo_(m + 1),
 143                 cellinfo_(m * n),
 144                 v_align_(v)
 145 {
 146         setDefaults();
 147         setVerticalAlignment(v);
 148         setHorizontalAlignments(h);
 149 }
 150
 151
 152 Inset * InsetMathGrid::clone() const
 153 {
 154         return new InsetMathGrid(*this);
 155 }
 156
 157
 158 InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
 159 {
 160         return col + ncols() * row;
 161 }
 162
 163
 164 void InsetMathGrid::setDefaults()
 165 {
 166         if (ncols() <= 0)
 167                 lyxerr << "positive number of columns expected" << endl;
 168         //if (nrows() <= 0)
 169         //      lyxerr << "positive number of rows expected" << endl;
 170         for (col_type col = 0; col < ncols(); ++col) {
 171                 colinfo_[col].align_ = defaultColAlign(col);
 172                 colinfo_[col].skip_  = defaultColSpace(col);
 173                 colinfo_[col].special_.clear();
 174         }
 175 }
 176
 177
 178 void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
 179 {
 180         col_type col = 0;
 181         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 182                 char_type c = *it;
 183                 if (c == '|') {
 184                         colinfo_[col].lines_++;
 185                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 186                             c == '!' || c == '@' || c == '>' || c == '<') &&
 187                            it + 1 != hh.end() && *(it + 1) == '{') {
 188                         // @{decl.} and p{width} are standard LaTeX, the
 189                         // others are extensions by array.sty
 190                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 191                         if (newcolumn) {
 192                                 // this declares a new column
 193                                 if (col >= ncols())
 194                                         // Only intercolumn stuff is allowed
 195                                         // in the last dummy column
 196                                         break;
 197                                 colinfo_[col].align_ = 'l';
 198                         } else {
 199                                 // this is intercolumn stuff
 200                                 if (colinfo_[col].special_.empty())
 201                                         // Overtake possible lines
 202                                         colinfo_[col].special_ = docstring(colinfo_[col].lines_, '|');
 203                         }
 204                         int brace_open = 0;
 205                         int brace_close = 0;
 206                         while (it != hh.end()) {
 207                                 c = *it;
 208                                 colinfo_[col].special_ += c;
 209                                 if (c == '{')
 210                                         ++brace_open;
 211                                 else if (c == '}')
 212                                         ++brace_close;
 213                                 ++it;
 214                                 if (brace_open > 0 && brace_open == brace_close)
 215                                         break;
 216                         }
 217                         --it;
 218                         if (newcolumn) {
 219                                 colinfo_[col].lines_ = count(
 220                                         colinfo_[col].special_.begin(),
 221                                         colinfo_[col].special_.end(), '|');
 222                                 LYXERR(Debug::MATHED, "special column separator: `"
 223                                         << to_utf8(colinfo_[col].special_) << '\'');
 224                                 ++col;
 225                                 colinfo_[col].lines_ = 0;
 226                                 colinfo_[col].special_.clear();
 227                         }
 228                 } else if (col >= ncols()) {
 229                         // Only intercolumn stuff is allowed in the last
 230                         // dummy column
 231                         break;
 232                 } else if (c == 'c' || c == 'l' || c == 'r') {
 233                         colinfo_[col].align_ = static_cast<char>(c);
 234                         if (!colinfo_[col].special_.empty()) {
 235                                 colinfo_[col].special_ += c;
 236                                 colinfo_[col].lines_ = count(
 237                                                 colinfo_[col].special_.begin(),
 238                                                 colinfo_[col].special_.end(), '|');
 239                                 LYXERR(Debug::MATHED, "special column separator: `"
 240                                         << to_utf8(colinfo_[col].special_) << '\'');
 241                         }
 242                         ++col;
 243                         colinfo_[col].lines_ = 0;
 244                         colinfo_[col].special_.clear();
 245                 } else {
 246                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 247                 }
 248         }
 249
 250 /*
 251         col_type n = hh.size();
 252         if (n > ncols())
 253                 n = ncols();
 254         for (col_type col = 0; col < n; ++col)
 255                 colinfo_[col].align_ = hh[col];
 256 */
 257 }
 258
 259
 260 InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
 261 {
 262         col_type col = 0;
 263         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
 264                 if (*it == 'c' || *it == 'l' || *it == 'r'||
 265                     *it == 'p' || *it == 'm' || *it == 'b')
 266                         ++col;
 267         // let's have at least one column, even if we did not recognize its
 268         // alignment
 269         if (col == 0)
 270                 col = 1;
 271         return col;
 272 }
 273
 274
 275 void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
 276 {
 277         colinfo_[col].align_ = h;
 278         if (!colinfo_[col].special_.empty()) {
 279                 char_type & c = colinfo_[col].special_[colinfo_[col].special_.size() - 1];
 280                 if (c == 'l' || c == 'c' || c == 'r')
 281                         c = h;
 282         }
 283         // FIXME: Change alignment of p, m and b columns, too
 284 }
 285
 286
 287 char InsetMathGrid::horizontalAlignment(col_type col) const
 288 {
 289         return colinfo_[col].align_;
 290 }
 291
 292
 293 docstring InsetMathGrid::horizontalAlignments() const
 294 {
 295         docstring res;
 296         for (col_type col = 0; col < ncols(); ++col) {
 297                 if (colinfo_[col].special_.empty()) {
 298                         res += docstring(colinfo_[col].lines_, '|');
 299                         res += colinfo_[col].align_;
 300                 } else
 301                         res += colinfo_[col].special_;
 302         }
 303         if (colinfo_[ncols()].special_.empty())
 304                 return res + docstring(colinfo_[ncols()].lines_, '|');
 305         return res + colinfo_[ncols()].special_;
 306 }
 307
 308
 309 void InsetMathGrid::setVerticalAlignment(char c)
 310 {
 311         v_align_ = c;
 312 }
 313
 314
 315 char InsetMathGrid::verticalAlignment() const
 316 {
 317         return v_align_;
 318 }
 319
 320
 321 InsetMathGrid::col_type InsetMathGrid::ncols() const
 322 {
 323         return colinfo_.size() - 1;
 324 }
 325
 326
 327 InsetMathGrid::row_type InsetMathGrid::nrows() const
 328 {
 329         return rowinfo_.size() - 1;
 330 }
 331
 332
 333 InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
 334 {
 335         return idx % ncols();
 336 }
 337
 338
 339 InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
 340 {
 341         return idx / ncols();
 342 }
 343
 344
 345 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 346 {
 347         rowinfo_[row].crskip_ = crskip;
 348 }
 349
 350
 351 Length InsetMathGrid::vcrskip(row_type row) const
 352 {
 353         return rowinfo_[row].crskip_;
 354 }
 355
 356
 357 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 358 {
 359         // let the cells adjust themselves
 360         InsetMathNest::metrics(mi);
 361
 362         BufferView & bv = *mi.base.bv;
 363
 364         // compute absolute sizes of vertical structure
 365         for (row_type row = 0; row < nrows(); ++row) {
 366                 int asc  = 0;
 367                 int desc = 0;
 368                 for (col_type col = 0; col < ncols(); ++col) {
 369                         Dimension const & dimc = cell(index(row, col)).dimension(bv);
 370                         asc  = max(asc,  dimc.asc);
 371                         desc = max(desc, dimc.des);
 372                 }
 373                 rowinfo_[row].ascent_  = asc;
 374                 rowinfo_[row].descent_ = desc;
 375         }
 376         rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 377         rowinfo_[nrows()].ascent_  = 0;
 378         rowinfo_[nrows()].descent_ = 0;
 379
 380         // compute vertical offsets
 381         rowinfo_[0].offset_ = 0;
 382         for (row_type row = 1; row <= nrows(); ++row) {
 383                 rowinfo_[row].offset_  =
 384                         rowinfo_[row - 1].offset_  +
 385                         rowinfo_[row - 1].descent_ +
 386                         rowinfo_[row - 1].skipPixels(mi) +
 387                         rowsep() +
 388                         rowinfo_[row].lines_ * hlinesep() +
 389                         rowinfo_[row].ascent_;
 390         }
 391
 392         // adjust vertical offset
 393         int h = 0;
 394         switch (v_align_) {
 395                 case 't':
 396                         h = 0;
 397                         break;
 398                 case 'b':
 399                         h = rowinfo_[nrows() - 1].offset_;
 400                         break;
 401                 default:
 402                         h = rowinfo_[nrows() - 1].offset_ / 2;
 403         }
 404         for (row_type row = 0; row <= nrows(); ++row)
 405                 rowinfo_[row].offset_ -= h;
 406
 407
 408         // compute absolute sizes of horizontal structure
 409         for (col_type col = 0; col < ncols(); ++col) {
 410                 int wid = 0;
 411                 for (row_type row = 0; row < nrows(); ++row)
 412                         wid = max(wid, cell(index(row, col)).dimension(bv).wid);
 413                 colinfo_[col].width_ = wid;
 414         }
 415         colinfo_[ncols()].width_  = 0;
 416
 417         // compute horizontal offsets
 418         colinfo_[0].offset_ = border();
 419         for (col_type col = 1; col <= ncols(); ++col) {
 420                 colinfo_[col].offset_ =
 421                         colinfo_[col - 1].offset_ +
 422                         colinfo_[col - 1].width_ +
 423                         colinfo_[col - 1].skip_ +
 424                         colsep() +
 425                         colinfo_[col].lines_ * vlinesep();
 426         }
 427
 428
 429         dim.wid   =   colinfo_[ncols() - 1].offset_
 430                        + colinfo_[ncols() - 1].width_
 431                  + vlinesep() * colinfo_[ncols()].lines_
 432                        + border();
 433
 434         dim.asc  = - rowinfo_[0].offset_
 435                        + rowinfo_[0].ascent_
 436                  + hlinesep() * rowinfo_[0].lines_
 437                        + border();
 438
 439         dim.des =   rowinfo_[nrows() - 1].offset_
 440                        + rowinfo_[nrows() - 1].descent_
 441                  + hlinesep() * rowinfo_[nrows()].lines_
 442                        + border();
 443
 444
 445 /*
 446         // Increase ws_[i] for 'R' columns (except the first one)
 447         for (int i = 1; i < nc_; ++i)
 448                 if (align_[i] == 'R')
 449                         ws_[i] += 10 * df_width;
 450         // Increase ws_[i] for 'C' column
 451         if (align_[0] == 'C')
 452                 if (ws_[0] < 7 * workwidth / 8)
 453                         ws_[0] = 7 * workwidth / 8;
 454
 455         // Adjust local tabs
 456         width = colsep();
 457         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 458                 int rg = COLSEP;
 459                 int lf = 0;
 460                 for (int i = 0; i < nc_; ++i) {
 461                         bool isvoid = false;
 462                         if (cxrow->getTab(i) <= 0) {
 463                                 cxrow->setTab(i, df_width);
 464                                 isvoid = true;
 465                         }
 466                         switch (align_[i]) {
 467                         case 'l':
 468                                 lf = 0;
 469                                 break;
 470                         case 'c':
 471                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 472                                 break;
 473                         case 'r':
 474                         case 'R':
 475                                 lf = ws_[i] - cxrow->getTab(i);
 476                                 break;
 477                         case 'C':
 478                                 if (cxrow == row_.begin())
 479                                         lf = 0;
 480                                 else if (cxrow.is_last())
 481                                         lf = ws_[i] - cxrow->getTab(i);
 482                                 else
 483                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 484                                 break;
 485                         }
 486                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 487                         cxrow->setTab(i, lf + rg);
 488                         rg = ws_[i] - ww + colsep();
 489                         if (cxrow == row_.begin())
 490                                 width += ws_[i] + colsep();
 491                 }
 492                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 493         }
 494 */
 495         metricsMarkers2(dim);
 496         // Cache the inset dimension.
 497         setDimCache(mi, dim);
 498 }
 499
 500
 501 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 502 {
 503         drawWithMargin(pi, x, y, 1, 1);
 504 }
 505
 506
 507 void InsetMathGrid::drawWithMargin(PainterInfo & pi, int x, int y,
 508         int lmargin, int rmargin) const
 509 {
 510         Dimension const dim = dimension(*pi.base.bv);
 511         BufferView const & bv = *pi.base.bv;
 512
 513         for (idx_type idx = 0; idx < nargs(); ++idx)
 514                 cell(idx).draw(pi, x + lmargin + cellXOffset(bv, idx),
 515                         y + cellYOffset(idx));
 516
 517         for (row_type row = 0; row <= nrows(); ++row)
 518                 for (unsigned int i = 0; i < rowinfo_[row].lines_; ++i) {
 519                         int yy = y + rowinfo_[row].offset_ - rowinfo_[row].ascent_
 520                                 - i * hlinesep() - hlinesep()/2 - rowsep()/2;
 521                         pi.pain.line(x + lmargin + 1, yy,
 522                                      x + dim.width() - rmargin - 1, yy,
 523                                      Color_foreground);
 524                 }
 525
 526         for (col_type col = 0; col <= ncols(); ++col)
 527                 for (unsigned int i = 0; i < colinfo_[col].lines_; ++i) {
 528                         int xx = x + lmargin + colinfo_[col].offset_
 529                                 - i * vlinesep() - vlinesep()/2 - colsep()/2;
 530                         pi.pain.line(xx, y - dim.ascent() + 1,
 531                                      xx, y + dim.descent() - 1,
 532                                      Color_foreground);
 533                 }
 534         drawMarkers2(pi, x, y);
 535 }
 536
 537
 538 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 539 {
 540         // let the cells adjust themselves
 541         //InsetMathNest::metrics(mi);
 542         for (idx_type i = 0; i < nargs(); ++i)
 543                 cell(i).metricsT(mi, dim);
 544
 545         // compute absolute sizes of vertical structure
 546         for (row_type row = 0; row < nrows(); ++row) {
 547                 int asc  = 0;
 548                 int desc = 0;
 549                 for (col_type col = 0; col < ncols(); ++col) {
 550                         //MathData const & c = cell(index(row, col));
 551                         // FIXME: BROKEN!
 552                         Dimension dimc;
 553                         asc  = max(asc,  dimc.ascent());
 554                         desc = max(desc, dimc.descent());
 555                 }
 556                 rowinfo_[row].ascent_  = asc;
 557                 rowinfo_[row].descent_ = desc;
 558         }
 559         //rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 560         rowinfo_[nrows()].ascent_  = 0;
 561         rowinfo_[nrows()].descent_ = 0;
 562
 563         // compute vertical offsets
 564         rowinfo_[0].offset_ = 0;
 565         for (row_type row = 1; row <= nrows(); ++row) {
 566                 rowinfo_[row].offset_  =
 567                         rowinfo_[row - 1].offset_  +
 568                         rowinfo_[row - 1].descent_ +
 569                         //rowinfo_[row - 1].skipPixels(mi) +
 570                         1 + //rowsep() +
 571                         //rowinfo_[row].lines_ * hlinesep() +
 572                         rowinfo_[row].ascent_;
 573         }
 574
 575         // adjust vertical offset
 576         int h = 0;
 577         switch (v_align_) {
 578                 case 't':
 579                         h = 0;
 580                         break;
 581                 case 'b':
 582                         h = rowinfo_[nrows() - 1].offset_;
 583                         break;
 584                 default:
 585                         h = rowinfo_[nrows() - 1].offset_ / 2;
 586         }
 587         for (row_type row = 0; row <= nrows(); ++row)
 588                 rowinfo_[row].offset_ -= h;
 589
 590
 591         // compute absolute sizes of horizontal structure
 592         for (col_type col = 0; col < ncols(); ++col) {
 593                 int wid = 0;
 594                 for (row_type row = 0; row < nrows(); ++row) {
 595                         // FIXME: BROKEN!
 596                         //wid = max(wid, cell(index(row, col)).width());
 597                 }
 598                 colinfo_[col].width_ = wid;
 599         }
 600         colinfo_[ncols()].width_  = 0;
 601
 602         // compute horizontal offsets
 603         colinfo_[0].offset_ = border();
 604         for (col_type col = 1; col <= ncols(); ++col) {
 605                 colinfo_[col].offset_ =
 606                         colinfo_[col - 1].offset_ +
 607                         colinfo_[col - 1].width_ +
 608                         colinfo_[col - 1].skip_ +
 609                         1 ; //colsep() +
 610                         //colinfo_[col].lines_ * vlinesep();
 611         }
 612
 613
 614         dim.wid  =  colinfo_[ncols() - 1].offset_
 615                        + colinfo_[ncols() - 1].width_
 616                  //+ vlinesep() * colinfo_[ncols()].lines_
 617                        + 2;
 618
 619         dim.asc  = -rowinfo_[0].offset_
 620                        + rowinfo_[0].ascent_
 621                  //+ hlinesep() * rowinfo_[0].lines_
 622                        + 1;
 623
 624         dim.des  =  rowinfo_[nrows() - 1].offset_
 625                        + rowinfo_[nrows() - 1].descent_
 626                  //+ hlinesep() * rowinfo_[nrows()].lines_
 627                        + 1;
 628 }
 629
 630
 631 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 632 {
 633 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 634 //              cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 635 }
 636
 637
 638 docstring InsetMathGrid::eolString(row_type row, bool fragile) const
 639 {
 640         docstring eol;
 641
 642         if (!rowinfo_[row].crskip_.zero())
 643                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 644         else if(!rowinfo_[row].allow_newpage_)
 645                 eol += '*';
 646
 647         // make sure an upcoming '[' does not break anything
 648         if (row + 1 < nrows()) {
 649                 MathData const & c = cell(index(row + 1, 0));
 650                 if (c.size() && c.front()->getChar() == '[')
 651                         //eol += "[0pt]";
 652                         eol += "{}";
 653         }
 654
 655         // only add \\ if necessary
 656         if (eol.empty() && row + 1 == nrows())
 657                 return docstring();
 658
 659         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 660 }
 661
 662
 663 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 664 {
 665         if (col + 1 == lastcol)
 666                 return docstring();
 667         return from_ascii(" & ");
 668 }
 669
 670
 671 void InsetMathGrid::addRow(row_type row)
 672 {
 673         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 674         cells_.insert
 675                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
 676         cellinfo_.insert
 677                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 678 }
 679
 680
 681 void InsetMathGrid::appendRow()
 682 {
 683         rowinfo_.push_back(RowInfo());
 684         //cells_.insert(cells_.end(), ncols(), MathData());
 685         for (col_type col = 0; col < ncols(); ++col) {
 686                 cells_.push_back(cells_type::value_type());
 687                 cellinfo_.push_back(CellInfo());
 688         }
 689 }
 690
 691
 692 void InsetMathGrid::delRow(row_type row)
 693 {
 694         if (nrows() == 1)
 695                 return;
 696
 697         cells_type::iterator it = cells_.begin() + row * ncols();
 698         cells_.erase(it, it + ncols());
 699
 700         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 701         cellinfo_.erase(jt, jt + ncols());
 702
 703         rowinfo_.erase(rowinfo_.begin() + row);
 704 }
 705
 706
 707 void InsetMathGrid::copyRow(row_type row)
 708 {
 709         addRow(row);
 710         for (col_type col = 0; col < ncols(); ++col)
 711                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 712 }
 713
 714
 715 void InsetMathGrid::swapRow(row_type row)
 716 {
 717         if (nrows() == 1)
 718                 return;
 719         if (row + 1 == nrows())
 720                 --row;
 721         for (col_type col = 0; col < ncols(); ++col)
 722                 swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + col]);
 723 }
 724
 725
 726 void InsetMathGrid::addCol(col_type newcol)
 727 {
 728         const col_type nc = ncols();
 729         const row_type nr = nrows();
 730         cells_type new_cells((nc + 1) * nr);
 731         vector<CellInfo> new_cellinfo((nc + 1) * nr);
 732
 733         for (row_type row = 0; row < nr; ++row)
 734                 for (col_type col = 0; col < nc; ++col) {
 735                         new_cells[row * (nc + 1) + col + (col >= newcol)]
 736                                 = cells_[row * nc + col];
 737                         new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
 738                                 = cellinfo_[row * nc + col];
 739                 }
 740         swap(cells_, new_cells);
 741         swap(cellinfo_, new_cellinfo);
 742
 743         ColInfo inf;
 744         inf.skip_  = defaultColSpace(newcol);
 745         inf.align_ = defaultColAlign(newcol);
 746         colinfo_.insert(colinfo_.begin() + newcol, inf);
 747 }
 748
 749
 750 void InsetMathGrid::delCol(col_type col)
 751 {
 752         if (ncols() == 1)
 753                 return;
 754
 755         cells_type tmpcells;
 756         vector<CellInfo> tmpcellinfo;
 757         for (col_type i = 0; i < nargs(); ++i)
 758                 if (i % ncols() != col) {
 759                         tmpcells.push_back(cells_[i]);
 760                         tmpcellinfo.push_back(cellinfo_[i]);
 761                 }
 762         swap(cells_, tmpcells);
 763         swap(cellinfo_, tmpcellinfo);
 764
 765         colinfo_.erase(colinfo_.begin() + col);
 766 }
 767
 768
 769 void InsetMathGrid::copyCol(col_type col)
 770 {
 771         addCol(col+1);
 772         for (row_type row = 0; row < nrows(); ++row)
 773                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 774 }
 775
 776
 777 void InsetMathGrid::swapCol(col_type col)
 778 {
 779         if (ncols() == 1)
 780                 return;
 781         if (col + 1 == ncols())
 782                 --col;
 783         for (row_type row = 0; row < nrows(); ++row)
 784                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 785 }
 786
 787
 788 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 789 {
 790         col_type c = col(idx);
 791         int x = colinfo_[c].offset_;
 792         char align = colinfo_[c].align_;
 793         Dimension const & celldim = cell(idx).dimension(bv);
 794         if (align == 'r' || align == 'R')
 795                 x += colinfo_[c].width_ - celldim.wid;
 796         if (align == 'c' || align == 'C')
 797                 x += (colinfo_[c].width_ - celldim.wid) / 2;
 798         return x;
 799 }
 800
 801
 802 int InsetMathGrid::cellYOffset(idx_type idx) const
 803 {
 804         return rowinfo_[row(idx)].offset_;
 805 }
 806
 807
 808 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 809 {
 810         if (up) {
 811                 if (cur.row() == 0)
 812                         return false;
 813                 cur.idx() -= ncols();
 814         } else {
 815                 if (cur.row() + 1 >= nrows())
 816                         return false;
 817                 cur.idx() += ncols();
 818         }
 819         cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - cur.cell().xo(cur.bv()));
 820         return true;
 821 }
 822
 823
 824 bool InsetMathGrid::idxBackward(Cursor & cur) const
 825 {
 826         // leave matrix if at the front edge
 827         if (cur.col() == 0)
 828                 return false;
 829         --cur.idx();
 830         cur.pos() = cur.lastpos();
 831         return true;
 832 }
 833
 834
 835 bool InsetMathGrid::idxForward(Cursor & cur) const
 836 {
 837         // leave matrix if at the back edge
 838         if (cur.col() + 1 == ncols())
 839                 return false;
 840         ++cur.idx();
 841         cur.pos() = 0;
 842         return true;
 843 }
 844
 845
 846 bool InsetMathGrid::idxFirst(Cursor & cur) const
 847 {
 848         switch (v_align_) {
 849                 case 't':
 850                         cur.idx() = 0;
 851                         break;
 852                 case 'b':
 853                         cur.idx() = (nrows() - 1) * ncols();
 854                         break;
 855                 default:
 856                         cur.idx() = ((nrows() - 1) / 2) * ncols();
 857         }
 858         cur.pos() = 0;
 859         return true;
 860 }
 861
 862
 863 bool InsetMathGrid::idxLast(Cursor & cur) const
 864 {
 865         switch (v_align_) {
 866                 case 't':
 867                         cur.idx() = ncols() - 1;
 868                         break;
 869                 case 'b':
 870                         cur.idx() = nargs() - 1;
 871                         break;
 872                 default:
 873                         cur.idx() = ((nrows() - 1) / 2 + 1) * ncols() - 1;
 874         }
 875         cur.pos() = cur.lastpos();
 876         return true;
 877 }
 878
 879
 880 bool InsetMathGrid::idxDelete(idx_type & idx)
 881 {
 882         // nothing to do if we have just one row
 883         if (nrows() == 1)
 884                 return false;
 885
 886         // nothing to do if we are in the middle of the last row of the inset
 887         if (idx + ncols() > nargs())
 888                 return false;
 889
 890         // try to delete entire sequence of ncols() empty cells if possible
 891         for (idx_type i = idx; i < idx + ncols(); ++i)
 892                 if (cell(i).size())
 893                         return false;
 894
 895         // move cells if necessary
 896         for (idx_type i = index(row(idx), 0); i < idx; ++i)
 897                 swap(cell(i), cell(i + ncols()));
 898
 899         delRow(row(idx));
 900
 901         if (idx >= nargs())
 902                 idx = nargs() - 1;
 903
 904         // undo effect of Ctrl-Tab (i.e. pull next cell)
 905         //if (idx + 1 != nargs())
 906         //      cell(idx).swap(cell(idx + 1));
 907
 908         // we handled the event..
 909         return true;
 910 }
 911
 912
 913 // reimplement old behaviour when pressing Delete in the last position
 914 // of a cell
 915 void InsetMathGrid::idxGlue(idx_type idx)
 916 {
 917         col_type c = col(idx);
 918         if (c + 1 == ncols()) {
 919                 if (row(idx) + 1 != nrows()) {
 920                         for (col_type cc = 0; cc < ncols(); ++cc)
 921                                 cell(idx).append(cell(idx + cc + 1));
 922                         delRow(row(idx) + 1);
 923                 }
 924         } else {
 925                 cell(idx).append(cell(idx + 1));
 926                 for (col_type cc = c + 2; cc < ncols(); ++cc)
 927                         cell(idx - c + cc - 1) = cell(idx - c + cc);
 928                 cell(idx - c + ncols() - 1).clear();
 929         }
 930 }
 931
 932
 933 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
 934 {
 935         return rowinfo_[row];
 936 }
 937
 938
 939 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
 940 {
 941         return rowinfo_[row];
 942 }
 943
 944
 945 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
 946 {
 947         row_type const ri = row(idx);
 948         row_type const r1 = min(row(from), row(to));
 949         row_type const r2 = max(row(from), row(to));
 950         col_type const ci = col(idx);
 951         col_type const c1 = min(col(from), col(to));
 952         col_type const c2 = max(col(from), col(to));
 953         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
 954 }
 955
 956
 957
 958 void InsetMathGrid::normalize(NormalStream & os) const
 959 {
 960         os << "[grid ";
 961         for (row_type row = 0; row < nrows(); ++row) {
 962                 os << "[row ";
 963                 for (col_type col = 0; col < ncols(); ++col)
 964                         os << "[cell " << cell(index(row, col)) << ']';
 965                 os << ']';
 966         }
 967         os << ']';
 968 }
 969
 970
 971 docstring InsetMathGrid::mathmlize(MathStream & os) const
 972 {
 973         bool const havetable = nrows() > 1;
 974         if (havetable)
 975                 os << MTag("mtable");
 976         docstring rv;
 977         for (row_type row = 0; row < nrows(); ++row) {
 978                 os << MTag("mrow");
 979                 for (col_type col = 0; col < ncols(); ++col)
 980                         rv += lyx::mathmlize(cell(index(row, col)), os);
 981                 os << ETag("mrow");
 982         }
 983         if (havetable)
 984                 os << ETag("mtable");
 985         return rv;
 986 }
 987
 988
 989 void InsetMathGrid::write(WriteStream & os) const
 990 {
 991         write(os, 0, 0, nrows(), ncols());
 992 }
 993
 994 void InsetMathGrid::write(WriteStream & os,
 995                           row_type beg_row, col_type beg_col,
 996                           row_type end_row, col_type end_col) const
 997 {
 998         MathEnsurer ensurer(os, false);
 999         docstring eol;
1000         for (row_type row = beg_row; row < end_row; ++row) {
1001                 os << verboseHLine(rowinfo_[row].lines_);
1002                 // don't write & and empty cells at end of line,
1003                 // unless there are vertical lines
1004                 col_type lastcol = 0;
1005                 bool emptyline = true;
1006                 for (col_type col = beg_col; col < end_col; ++col)
1007                         if (!cell(index(row, col)).empty()
1008                                   || colinfo_[col + 1].lines_) {
1009                                 lastcol = col + 1;
1010                                 emptyline = false;
1011                         }
1012                 for (col_type col = beg_col; col < lastcol; ++col) {
1013                         os << cell(index(row, col));
1014                         if (os.pendingBrace())
1015                                 ModeSpecifier specifier(os, TEXT_MODE);
1016                         os << eocString(col, lastcol);
1017                 }
1018                 eol = eolString(row, os.fragile());
1019                 os << eol;
1020                 // append newline only if line wasn't completely empty
1021                 // and the formula is not written on a single line
1022                 bool const empty = emptyline && eol.empty();
1023                 if (!empty && nrows() > 1)
1024                         os << "\n";
1025         }
1026         // @TODO use end_row instead of nrows() ?
1027         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1028         if (!s.empty()) {
1029                 if (eol.empty()) {
1030                         if (os.fragile())
1031                                 os << "\\protect";
1032                         os << "\\\\";
1033                 }
1034                 os << s;
1035         }
1036 }
1037
1038
1039 int InsetMathGrid::colsep() const
1040 {
1041         return 6;
1042 }
1043
1044
1045 int InsetMathGrid::rowsep() const
1046 {
1047         return 6;
1048 }
1049
1050
1051 int InsetMathGrid::hlinesep() const
1052 {
1053         return 3;
1054 }
1055
1056
1057 int InsetMathGrid::vlinesep() const
1058 {
1059         return 3;
1060 }
1061
1062
1063 int InsetMathGrid::border() const
1064 {
1065         return 1;
1066 }
1067
1068
1069 void InsetMathGrid::splitCell(Cursor & cur)
1070 {
1071         if (cur.idx() == cur.lastidx())
1072                 return;
1073         MathData ar = cur.cell();
1074         ar.erase(0, cur.pos());
1075         cur.cell().erase(cur.pos(), cur.lastpos());
1076         ++cur.idx();
1077         cur.pos() = 0;
1078         cur.cell().insert(0, ar);
1079 }
1080
1081
1082 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1083 {
1084         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1085
1086         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
1087
1088         switch (cmd.action) {
1089
1090         // insert file functions
1091         case LFUN_LINE_DELETE:
1092                 cur.recordUndoInset();
1093                 //autocorrect_ = false;
1094                 //macroModeClose();
1095                 //if (selection_) {
1096                 //      selDel();
1097                 //      break;
1098                 //}
1099                 if (nrows() > 1)
1100                         delRow(cur.row());
1101                 if (cur.idx() > cur.lastidx())
1102                         cur.idx() = cur.lastidx();
1103                 if (cur.pos() > cur.lastpos())
1104                         cur.pos() = cur.lastpos();
1105                 break;
1106
1107         case LFUN_CELL_SPLIT:
1108                 cur.recordUndo();
1109                 splitCell(cur);
1110                 break;
1111
1112         case LFUN_CELL_BACKWARD:
1113                 // See below.
1114                 cur.setSelection(false);
1115                 if (!idxPrev(cur)) {
1116                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1117                         cur.undispatched();
1118                 }
1119                 break;
1120
1121         case LFUN_CELL_FORWARD:
1122                 // Can't handle selection by additional 'shift' as this is
1123                 // hard bound to LFUN_CELL_BACKWARD
1124                 cur.setSelection(false);
1125                 if (!idxNext(cur)) {
1126                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1127                         cur.undispatched();
1128                 }
1129                 break;
1130
1131         case LFUN_NEWLINE_INSERT: {
1132                 cur.recordUndoInset();
1133                 row_type const r = cur.row();
1134                 addRow(r);
1135
1136                 // split line
1137                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1138                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1139
1140                 // split cell
1141                 splitCell(cur);
1142                 swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1143                 if (cur.idx() > 0)
1144                         --cur.idx();
1145                 cur.pos() = cur.lastpos();
1146
1147                 //mathcursor->normalize();
1148                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1149                 break;
1150         }
1151
1152         case LFUN_TABULAR_FEATURE: {
1153                 cur.recordUndoInset();
1154                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1155                 istringstream is(to_utf8(cmd.argument()));
1156                 string s;
1157                 is >> s;
1158                 if (s == "valign-top")
1159                         setVerticalAlignment('t');
1160                 else if (s == "valign-middle")
1161                         setVerticalAlignment('c');
1162                 else if (s == "valign-bottom")
1163                         setVerticalAlignment('b');
1164                 else if (s == "align-left")
1165                         setHorizontalAlignment('l', cur.col());
1166                 else if (s == "align-right")
1167                         setHorizontalAlignment('r', cur.col());
1168                 else if (s == "align-center")
1169                         setHorizontalAlignment('c', cur.col());
1170                 else if (s == "append-row")
1171                         for (int i = 0, n = extractInt(is); i < n; ++i)
1172                                 addRow(cur.row());
1173                 else if (s == "delete-row") {
1174                         cur.clearSelection(); // bug 4323
1175                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1176                                 delRow(cur.row());
1177                                 if (cur.idx() >= nargs())
1178                                         cur.idx() -= ncols();
1179                         }
1180                         cur.pos() = 0; // trick, see below
1181                 }
1182                 else if (s == "copy-row") {
1183                         // Here (as later) we save the cursor col/row
1184                         // in order to restore it after operation.
1185                         row_type const r = cur.row();
1186                         col_type const c = cur.col();
1187                         for (int i = 0, n = extractInt(is); i < n; ++i)
1188                                 copyRow(cur.row());
1189                         cur.idx() = index(r, c);
1190                 }
1191                 else if (s == "swap-row") {
1192                         swapRow(cur.row());
1193                         // Trick to suppress same-idx-means-different-cell
1194                         // assertion crash:
1195                         cur.pos() = 0;
1196                 }
1197                 else if (s == "add-hline-above")
1198                         rowinfo_[cur.row()].lines_++;
1199                 else if (s == "add-hline-below")
1200                         rowinfo_[cur.row()+1].lines_++;
1201                 else if (s == "delete-hline-above")
1202                         rowinfo_[cur.row()].lines_--;
1203                 else if (s == "delete-hline-below")
1204                         rowinfo_[cur.row()+1].lines_--;
1205                 else if (s == "append-column") {
1206                         row_type const r = cur.row();
1207                         col_type const c = cur.col();
1208                         for (int i = 0, n = extractInt(is); i < n; ++i)
1209                                 addCol(cur.col() + 1);
1210                         cur.idx() = index(r, c);
1211                 }
1212                 else if (s == "delete-column") {
1213                         cur.clearSelection(); // bug 4323
1214                         row_type const r = cur.row();
1215                         col_type const c = cur.col();
1216                         for (int i = 0, n = extractInt(is); i < n; ++i)
1217                                 delCol(col(cur.idx()));
1218                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1219                         cur.pos() = 0; // trick, see above
1220                 }
1221                 else if (s == "copy-column") {
1222                         row_type const r = cur.row();
1223                         col_type const c = cur.col();
1224                         copyCol(cur.col());
1225                         cur.idx() = index(r, c);
1226                 }
1227                 else if (s == "swap-column") {
1228                         swapCol(cur.col());
1229                         cur.pos() = 0; // trick, see above
1230                 }
1231                 else if (s == "add-vline-left") {
1232                         colinfo_[cur.col()].lines_++;
1233                         if (!colinfo_[cur.col()].special_.empty())
1234                                 colinfo_[cur.col()].special_ += '|';
1235                 }
1236                 else if (s == "add-vline-right") {
1237                         colinfo_[cur.col()+1].lines_++;
1238                         if (!colinfo_[cur.col()+1].special_.empty())
1239                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1240                 }
1241                 else if (s == "delete-vline-left") {
1242                         colinfo_[cur.col()].lines_--;
1243                         docstring & special = colinfo_[cur.col()].special_;
1244                         if (!special.empty()) {
1245                                 docstring::size_type i = special.rfind('|');
1246                                 LASSERT(i != docstring::npos, /**/);
1247                                 special.erase(i, 1);
1248                         }
1249                 }
1250                 else if (s == "delete-vline-right") {
1251                         colinfo_[cur.col()+1].lines_--;
1252                         docstring & special = colinfo_[cur.col()+1].special_;
1253                         if (!special.empty()) {
1254                                 docstring::size_type i = special.find('|');
1255                                 LASSERT(i != docstring::npos, /**/);
1256                                 special.erase(i, 1);
1257                         }
1258                 }
1259                 else {
1260                         cur.undispatched();
1261                         break;
1262                 }
1263                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1264                 //lyxerr << "returning FINISHED_LEFT" << endl;
1265                 break;
1266         }
1267
1268         case LFUN_CLIPBOARD_PASTE:
1269                 parseflg |= Parse::VERBATIM;
1270                 // fall through
1271         case LFUN_PASTE: {
1272                 if (cur.currentMode() <= TEXT_MODE)
1273                         parseflg |= Parse::TEXTMODE;
1274                 cur.message(_("Paste"));
1275                 cap::replaceSelection(cur);
1276                 docstring topaste;
1277                 if (cmd.argument().empty() && !theClipboard().isInternal())
1278                         topaste = theClipboard().getAsText();
1279                 else {
1280                         idocstringstream is(cmd.argument());
1281                         int n = 0;
1282                         is >> n;
1283                         topaste = cap::selection(n);
1284                 }
1285                 InsetMathGrid grid(buffer_, 1, 1);
1286                 if (!topaste.empty())
1287                         if ((topaste.size() == 1 && topaste.at(0) < 0x80)
1288                             || !mathed_parse_normal(grid, topaste, parseflg)) {
1289                                 resetGrid(grid);
1290                                 mathed_parse_normal(grid, topaste, parseflg | Parse::VERBATIM);
1291                         }
1292
1293                 if (grid.nargs() == 1) {
1294                         // single cell/part of cell
1295                         cur.recordUndo();
1296                         cur.cell().insert(cur.pos(), grid.cell(0));
1297                         cur.pos() += grid.cell(0).size();
1298                 } else {
1299                         // multiple cells
1300                         cur.recordUndoInset();
1301                         col_type const numcols =
1302                                 min(grid.ncols(), ncols() - col(cur.idx()));
1303                         row_type const numrows =
1304                                 min(grid.nrows(), nrows() - cur.row());
1305                         for (row_type r = 0; r < numrows; ++r) {
1306                                 for (col_type c = 0; c < numcols; ++c) {
1307                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1308                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1309                                 }
1310                                 // append the left over horizontal cells to the last column
1311                                 idx_type i = index(r + cur.row(), ncols() - 1);
1312                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1313                                         cell(i).append(grid.cell(grid.index(r, c)));
1314                         }
1315                         // append the left over vertical cells to the last _cell_
1316                         idx_type i = nargs() - 1;
1317                         for (row_type r = numrows; r < grid.nrows(); ++r)
1318                                 for (col_type c = 0; c < grid.ncols(); ++c)
1319                                         cell(i).append(grid.cell(grid.index(r, c)));
1320                 }
1321                 cur.clearSelection(); // bug 393
1322                 cur.finishUndo();
1323                 break;
1324         }
1325
1326         case LFUN_LINE_BEGIN_SELECT:
1327         case LFUN_LINE_BEGIN:
1328         case LFUN_WORD_BACKWARD_SELECT:
1329         case LFUN_WORD_BACKWARD:
1330         case LFUN_WORD_LEFT_SELECT:
1331         case LFUN_WORD_LEFT:
1332                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
1333                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
1334                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
1335                 cur.macroModeClose();
1336                 if (cur.pos() != 0) {
1337                         cur.pos() = 0;
1338                 } else if (cur.idx() % cur.ncols() != 0) {
1339                         cur.idx() -= cur.idx() % cur.ncols();
1340                         cur.pos() = 0;
1341                 } else if (cur.idx() != 0) {
1342                         cur.idx() = 0;
1343                         cur.pos() = 0;
1344                 } else {
1345                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1346                         cur.undispatched();
1347                 }
1348                 break;
1349
1350         case LFUN_WORD_FORWARD_SELECT:
1351         case LFUN_WORD_FORWARD:
1352         case LFUN_WORD_RIGHT_SELECT:
1353         case LFUN_WORD_RIGHT:
1354         case LFUN_LINE_END_SELECT:
1355         case LFUN_LINE_END:
1356                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
1357                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
1358                                 cmd.action == LFUN_LINE_END_SELECT);
1359                 cur.macroModeClose();
1360                 cur.clearTargetX();
1361                 if (cur.pos() != cur.lastpos()) {
1362                         cur.pos() = cur.lastpos();
1363                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1364                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1365                         cur.pos() = cur.lastpos();
1366                 } else if (cur.idx() != cur.lastidx()) {
1367                         cur.idx() = cur.lastidx();
1368                         cur.pos() = cur.lastpos();
1369                 } else {
1370                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1371                         cur.undispatched();
1372                 }
1373                 break;
1374
1375         default:
1376                 InsetMathNest::doDispatch(cur, cmd);
1377         }
1378 }
1379
1380
1381 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1382                 FuncStatus & status) const
1383 {
1384         switch (cmd.action) {
1385         case LFUN_TABULAR_FEATURE: {
1386                 string const s = cmd.getArg(0);
1387                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1388                         status.setEnabled(false);
1389                         status.message(from_utf8(N_("Only one row")));
1390                         return true;
1391                 }
1392                 if (ncols() <= 1 &&
1393                     (s == "delete-column" || s == "swap-column")) {
1394                         status.setEnabled(false);
1395                         status.message(from_utf8(N_("Only one column")));
1396                         return true;
1397                 }
1398                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1399                      s == "delete-hline-above") ||
1400                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1401                      s == "delete-hline-below")) {
1402                         status.setEnabled(false);
1403                         status.message(from_utf8(N_("No hline to delete")));
1404                         return true;
1405                 }
1406
1407                 if ((colinfo_[cur.col()].lines_ == 0 &&
1408                      s == "delete-vline-left") ||
1409                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1410                      s == "delete-vline-right")) {
1411                         status.setEnabled(false);
1412                         status.message(from_utf8(N_("No vline to delete")));
1413                         return true;
1414                 }
1415                 if (s == "valign-top" || s == "valign-middle" ||
1416                     s == "valign-bottom" || s == "align-left" ||
1417                     s == "align-right" || s == "align-center") {
1418                         status.setEnabled(true);
1419                         char const ha = horizontalAlignment(cur.col());
1420                         char const va = verticalAlignment();
1421                         status.setOnOff((s == "align-left" && ha == 'l')
1422                                         || (s == "align-right"   && ha == 'r')
1423                                         || (s == "align-center"  && ha == 'c')
1424                                         || (s == "valign-top"    && va == 't')
1425                                         || (s == "valign-bottom" && va == 'b')
1426                                         || (s == "valign-middle" && va == 'c'));
1427                         return true;
1428                 }
1429                 if (s == "append-row" || s == "delete-row" ||
1430                     s == "copy-row" || s == "swap-row" ||
1431                     s == "add-hline-above" || s == "add-hline-below" ||
1432                     s == "delete-hline-above" || s == "delete-hline-below" ||
1433                     s == "append-column" || s == "delete-column" ||
1434                     s == "copy-column" || s == "swap-column" ||
1435                     s == "add-vline-left" || s == "add-vline-right" ||
1436                     s == "delete-vline-left" || s == "delete-vline-right") {
1437                         status.setEnabled(true);
1438                 } else {
1439                         status.setEnabled(false);
1440                         status.message(bformat(
1441                                 from_utf8(N_("Unknown tabular feature '%1$s'")), lyx::from_ascii(s)));
1442                 }
1443
1444 #if 0
1445                 // FIXME: What did this code do?
1446                 // Please check whether it is still needed!
1447                 // should be more precise
1448                 if (v_align_ == '\0') {
1449                         status.enable(true);
1450                         break;
1451                 }
1452                 if (cmd.argument().empty()) {
1453                         status.enable(false);
1454                         break;
1455                 }
1456                 if (!contains("tcb", cmd.argument()[0])) {
1457                         status.enable(false);
1458                         break;
1459                 }
1460                 status.setOnOff(cmd.argument()[0] == v_align_);
1461                 status.setEnabled(true);
1462 #endif
1463                 return true;
1464         }
1465
1466         case LFUN_CELL_SPLIT:
1467                 status.setEnabled(true);
1468                 return true;
1469
1470         case LFUN_CELL_BACKWARD:
1471         case LFUN_CELL_FORWARD:
1472                 status.setEnabled(true);
1473                 return true;
1474
1475         default:
1476                 return InsetMathNest::getStatus(cur, cmd, status);
1477         }
1478 }
1479
1480
1481 } // namespace lyx