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 "Buffer.h"
  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
  46 namespace lyx {
  47
  48 static docstring verboseHLine(int n)
  49 {
  50         docstring res;
  51         for (int i = 0; i < n; ++i)
  52                 res += "\\hline";
  53         if (n)
  54                 res += ' ';
  55         return res;
  56 }
  57
  58
  59 static int extractInt(istream & is)
  60 {
  61         int num = 1;
  62         is >> num;
  63         return (num == 0) ? 1 : num;
  64 }
  65
  66
  67 static void resetGrid(InsetMathGrid & grid)
  68 {
  69         while (grid.ncols() > 1)
  70                 grid.delCol(grid.ncols() - 1);
  71         while (grid.nrows() > 1)
  72                 grid.delRow(grid.nrows() - 1);
  73         grid.cell(0).erase(0, grid.cell(0).size());
  74         grid.setDefaults();
  75 }
  76
  77
  78
  79 //////////////////////////////////////////////////////////////
  80
  81
  82 InsetMathGrid::CellInfo::CellInfo()
  83         : dummy_(false)
  84 {}
  85
  86
  87
  88 //////////////////////////////////////////////////////////////
  89
  90
  91 InsetMathGrid::RowInfo::RowInfo()
  92         : lines_(0), skip_(0), allow_newpage_(true)
  93 {}
  94
  95
  96
  97 int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
  98 {
  99         frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
 100         return crskip_.inPixels(mi.base.textwidth,
 101                                 fm.width(char_type('M')));
 102 }
 103
 104
 105
 106 //////////////////////////////////////////////////////////////
 107
 108
 109 InsetMathGrid::ColInfo::ColInfo()
 110         : align_('c'), lines_(0)
 111 {}
 112
 113
 114 //////////////////////////////////////////////////////////////
 115
 116
 117 InsetMathGrid::InsetMathGrid(Buffer * buf)
 118         : InsetMathNest(buf, 1),
 119           rowinfo_(1 + 1),
 120                 colinfo_(1 + 1),
 121                 cellinfo_(1),
 122                 v_align_('c')
 123 {
 124         setDefaults();
 125 }
 126
 127
 128 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
 129         : InsetMathNest(buf, m * n),
 130           rowinfo_(n + 1),
 131                 colinfo_(m + 1),
 132                 cellinfo_(m * n),
 133                 v_align_('c')
 134 {
 135         setDefaults();
 136 }
 137
 138
 139 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
 140         docstring const & h)
 141         : InsetMathNest(buf, m * n),
 142           rowinfo_(n + 1),
 143           colinfo_(m + 1),
 144                 cellinfo_(m * n),
 145                 v_align_(v)
 146 {
 147         setDefaults();
 148         setVerticalAlignment(v);
 149         setHorizontalAlignments(h);
 150 }
 151
 152
 153 Inset * InsetMathGrid::clone() const
 154 {
 155         return new InsetMathGrid(*this);
 156 }
 157
 158
 159 InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
 160 {
 161         return col + ncols() * row;
 162 }
 163
 164
 165 void InsetMathGrid::setDefaults()
 166 {
 167         if (ncols() <= 0)
 168                 lyxerr << "positive number of columns expected" << endl;
 169         //if (nrows() <= 0)
 170         //      lyxerr << "positive number of rows expected" << endl;
 171         for (col_type col = 0; col < ncols(); ++col) {
 172                 colinfo_[col].align_ = defaultColAlign(col);
 173                 colinfo_[col].skip_  = defaultColSpace(col);
 174                 colinfo_[col].special_.clear();
 175         }
 176 }
 177
 178
 179 void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
 180 {
 181         col_type col = 0;
 182         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 183                 char_type c = *it;
 184                 if (c == '|') {
 185                         colinfo_[col].lines_++;
 186                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 187                             c == '!' || c == '@' || c == '>' || c == '<') &&
 188                            it + 1 != hh.end() && *(it + 1) == '{') {
 189                         // @{decl.} and p{width} are standard LaTeX, the
 190                         // others are extensions by array.sty
 191                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 192                         if (newcolumn) {
 193                                 // this declares a new column
 194                                 if (col >= ncols())
 195                                         // Only intercolumn stuff is allowed
 196                                         // in the last dummy column
 197                                         break;
 198                                 colinfo_[col].align_ = 'l';
 199                         } else {
 200                                 // this is intercolumn stuff
 201                                 if (colinfo_[col].special_.empty())
 202                                         // Overtake possible lines
 203                                         colinfo_[col].special_ = docstring(colinfo_[col].lines_, '|');
 204                         }
 205                         int brace_open = 0;
 206                         int brace_close = 0;
 207                         while (it != hh.end()) {
 208                                 c = *it;
 209                                 colinfo_[col].special_ += c;
 210                                 if (c == '{')
 211                                         ++brace_open;
 212                                 else if (c == '}')
 213                                         ++brace_close;
 214                                 ++it;
 215                                 if (brace_open > 0 && brace_open == brace_close)
 216                                         break;
 217                         }
 218                         --it;
 219                         if (newcolumn) {
 220                                 colinfo_[col].lines_ = count(
 221                                         colinfo_[col].special_.begin(),
 222                                         colinfo_[col].special_.end(), '|');
 223                                 LYXERR(Debug::MATHED, "special column separator: `"
 224                                         << to_utf8(colinfo_[col].special_) << '\'');
 225                                 ++col;
 226                                 colinfo_[col].lines_ = 0;
 227                                 colinfo_[col].special_.clear();
 228                         }
 229                 } else if (col >= ncols()) {
 230                         // Only intercolumn stuff is allowed in the last
 231                         // dummy column
 232                         break;
 233                 } else if (c == 'c' || c == 'l' || c == 'r') {
 234                         colinfo_[col].align_ = static_cast<char>(c);
 235                         if (!colinfo_[col].special_.empty()) {
 236                                 colinfo_[col].special_ += c;
 237                                 colinfo_[col].lines_ = count(
 238                                                 colinfo_[col].special_.begin(),
 239                                                 colinfo_[col].special_.end(), '|');
 240                                 LYXERR(Debug::MATHED, "special column separator: `"
 241                                         << to_utf8(colinfo_[col].special_) << '\'');
 242                         }
 243                         ++col;
 244                         colinfo_[col].lines_ = 0;
 245                         colinfo_[col].special_.clear();
 246                 } else {
 247                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 248                 }
 249         }
 250
 251 /*
 252         col_type n = hh.size();
 253         if (n > ncols())
 254                 n = ncols();
 255         for (col_type col = 0; col < n; ++col)
 256                 colinfo_[col].align_ = hh[col];
 257 */
 258 }
 259
 260
 261 InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
 262 {
 263         col_type col = 0;
 264         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
 265                 if (*it == 'c' || *it == 'l' || *it == 'r'||
 266                     *it == 'p' || *it == 'm' || *it == 'b')
 267                         ++col;
 268         // let's have at least one column, even if we did not recognize its
 269         // alignment
 270         if (col == 0)
 271                 col = 1;
 272         return col;
 273 }
 274
 275
 276 void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
 277 {
 278         colinfo_[col].align_ = h;
 279         if (!colinfo_[col].special_.empty()) {
 280                 char_type & c = colinfo_[col].special_[colinfo_[col].special_.size() - 1];
 281                 if (c == 'l' || c == 'c' || c == 'r')
 282                         c = h;
 283         }
 284         // FIXME: Change alignment of p, m and b columns, too
 285 }
 286
 287
 288 char InsetMathGrid::horizontalAlignment(col_type col) const
 289 {
 290         return colinfo_[col].align_;
 291 }
 292
 293
 294 docstring InsetMathGrid::horizontalAlignments() const
 295 {
 296         docstring res;
 297         for (col_type col = 0; col < ncols(); ++col) {
 298                 if (colinfo_[col].special_.empty()) {
 299                         res += docstring(colinfo_[col].lines_, '|');
 300                         res += colinfo_[col].align_;
 301                 } else
 302                         res += colinfo_[col].special_;
 303         }
 304         if (colinfo_[ncols()].special_.empty())
 305                 return res + docstring(colinfo_[ncols()].lines_, '|');
 306         return res + colinfo_[ncols()].special_;
 307 }
 308
 309
 310 void InsetMathGrid::setVerticalAlignment(char c)
 311 {
 312         v_align_ = c;
 313 }
 314
 315
 316 char InsetMathGrid::verticalAlignment() const
 317 {
 318         return v_align_;
 319 }
 320
 321
 322 InsetMathGrid::col_type InsetMathGrid::ncols() const
 323 {
 324         return colinfo_.size() - 1;
 325 }
 326
 327
 328 InsetMathGrid::row_type InsetMathGrid::nrows() const
 329 {
 330         return rowinfo_.size() - 1;
 331 }
 332
 333
 334 InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
 335 {
 336         return idx % ncols();
 337 }
 338
 339
 340 InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
 341 {
 342         return idx / ncols();
 343 }
 344
 345
 346 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 347 {
 348         rowinfo_[row].crskip_ = crskip;
 349 }
 350
 351
 352 Length InsetMathGrid::vcrskip(row_type row) const
 353 {
 354         return rowinfo_[row].crskip_;
 355 }
 356
 357
 358 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 359 {
 360         // let the cells adjust themselves
 361         InsetMathNest::metrics(mi);
 362
 363         BufferView & bv = *mi.base.bv;
 364
 365         // compute absolute sizes of vertical structure
 366         for (row_type row = 0; row < nrows(); ++row) {
 367                 int asc  = 0;
 368                 int desc = 0;
 369                 for (col_type col = 0; col < ncols(); ++col) {
 370                         Dimension const & dimc = cell(index(row, col)).dimension(bv);
 371                         asc  = max(asc,  dimc.asc);
 372                         desc = max(desc, dimc.des);
 373                 }
 374                 rowinfo_[row].ascent_  = asc;
 375                 rowinfo_[row].descent_ = desc;
 376         }
 377         rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 378         rowinfo_[nrows()].ascent_  = 0;
 379         rowinfo_[nrows()].descent_ = 0;
 380
 381         // compute vertical offsets
 382         rowinfo_[0].offset_ = 0;
 383         for (row_type row = 1; row <= nrows(); ++row) {
 384                 rowinfo_[row].offset_ =
 385                         rowinfo_[row - 1].offset_ +
 386                         rowinfo_[row - 1].descent_ +
 387                         rowinfo_[row - 1].skipPixels(mi) +
 388                         rowsep() +
 389                         rowinfo_[row].lines_ * hlinesep() +
 390                         rowinfo_[row].ascent_;
 391         }
 392
 393         // adjust vertical offset
 394         int h = 0;
 395         switch (v_align_) {
 396                 case 't':
 397                         h = 0;
 398                         break;
 399                 case 'b':
 400                         h = rowinfo_[nrows() - 1].offset_;
 401                         break;
 402                 default:
 403                         h = rowinfo_[nrows() - 1].offset_ / 2;
 404         }
 405         for (row_type row = 0; row <= nrows(); ++row)
 406                 rowinfo_[row].offset_ -= h;
 407
 408
 409         // compute absolute sizes of horizontal structure
 410         for (col_type col = 0; col < ncols(); ++col) {
 411                 int wid = 0;
 412                 for (row_type row = 0; row < nrows(); ++row)
 413                         wid = max(wid, cell(index(row, col)).dimension(bv).wid);
 414                 colinfo_[col].width_ = wid;
 415         }
 416         colinfo_[ncols()].width_  = 0;
 417
 418         // compute horizontal offsets
 419         colinfo_[0].offset_ = border();
 420         for (col_type col = 1; col <= ncols(); ++col) {
 421                 colinfo_[col].offset_ =
 422                         colinfo_[col - 1].offset_ +
 423                         colinfo_[col - 1].width_ +
 424                         colinfo_[col - 1].skip_ +
 425                         colsep() +
 426                         colinfo_[col].lines_ * vlinesep();
 427         }
 428
 429
 430         dim.wid = colinfo_[ncols() - 1].offset_
 431                 + colinfo_[ncols() - 1].width_
 432                 + vlinesep() * colinfo_[ncols()].lines_
 433                 + border();
 434
 435         dim.asc = - rowinfo_[0].offset_
 436                 + rowinfo_[0].ascent_
 437                 + hlinesep() * rowinfo_[0].lines_
 438                 + border();
 439
 440         dim.des = rowinfo_[nrows() - 1].offset_
 441                 + rowinfo_[nrows() - 1].descent_
 442                 + hlinesep() * rowinfo_[nrows()].lines_
 443                 + border();
 444
 445
 446 /*
 447         // Increase ws_[i] for 'R' columns (except the first one)
 448         for (int i = 1; i < nc_; ++i)
 449                 if (align_[i] == 'R')
 450                         ws_[i] += 10 * df_width;
 451         // Increase ws_[i] for 'C' column
 452         if (align_[0] == 'C')
 453                 if (ws_[0] < 7 * workwidth / 8)
 454                         ws_[0] = 7 * workwidth / 8;
 455
 456         // Adjust local tabs
 457         width = colsep();
 458         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 459                 int rg = COLSEP;
 460                 int lf = 0;
 461                 for (int i = 0; i < nc_; ++i) {
 462                         bool isvoid = false;
 463                         if (cxrow->getTab(i) <= 0) {
 464                                 cxrow->setTab(i, df_width);
 465                                 isvoid = true;
 466                         }
 467                         switch (align_[i]) {
 468                         case 'l':
 469                                 lf = 0;
 470                                 break;
 471                         case 'c':
 472                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 473                                 break;
 474                         case 'r':
 475                         case 'R':
 476                                 lf = ws_[i] - cxrow->getTab(i);
 477                                 break;
 478                         case 'C':
 479                                 if (cxrow == row_.begin())
 480                                         lf = 0;
 481                                 else if (cxrow.is_last())
 482                                         lf = ws_[i] - cxrow->getTab(i);
 483                                 else
 484                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 485                                 break;
 486                         }
 487                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 488                         cxrow->setTab(i, lf + rg);
 489                         rg = ws_[i] - ww + colsep();
 490                         if (cxrow == row_.begin())
 491                                 width += ws_[i] + colsep();
 492                 }
 493                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 494         }
 495 */
 496         metricsMarkers2(dim);
 497         // Cache the inset dimension.
 498         setDimCache(mi, dim);
 499 }
 500
 501
 502 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 503 {
 504         drawWithMargin(pi, x, y, 1, 1);
 505 }
 506
 507
 508 void InsetMathGrid::drawWithMargin(PainterInfo & pi, int x, int y,
 509         int lmargin, int rmargin) const
 510 {
 511         Dimension const dim = dimension(*pi.base.bv);
 512         BufferView const & bv = *pi.base.bv;
 513
 514         for (idx_type idx = 0; idx < nargs(); ++idx)
 515                 cell(idx).draw(pi, x + lmargin + cellXOffset(bv, idx),
 516                         y + cellYOffset(idx));
 517
 518         for (row_type row = 0; row <= nrows(); ++row)
 519                 for (unsigned int i = 0; i < rowinfo_[row].lines_; ++i) {
 520                         int yy = y + rowinfo_[row].offset_ - rowinfo_[row].ascent_
 521                                 - i * hlinesep() - hlinesep()/2 - rowsep()/2;
 522                         pi.pain.line(x + lmargin + 1, yy,
 523                                      x + dim.width() - rmargin - 1, yy,
 524                                      Color_foreground);
 525                 }
 526
 527         for (col_type col = 0; col <= ncols(); ++col)
 528                 for (unsigned int i = 0; i < colinfo_[col].lines_; ++i) {
 529                         int xx = x + lmargin + colinfo_[col].offset_
 530                                 - i * vlinesep() - vlinesep()/2 - colsep()/2;
 531                         pi.pain.line(xx, y - dim.ascent() + 1,
 532                                      xx, y + dim.descent() - 1,
 533                                      Color_foreground);
 534                 }
 535         drawMarkers2(pi, x, y);
 536 }
 537
 538
 539 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 540 {
 541         // let the cells adjust themselves
 542         //InsetMathNest::metrics(mi);
 543         for (idx_type i = 0; i < nargs(); ++i)
 544                 cell(i).metricsT(mi, dim);
 545
 546         // compute absolute sizes of vertical structure
 547         for (row_type row = 0; row < nrows(); ++row) {
 548                 int asc  = 0;
 549                 int desc = 0;
 550                 for (col_type col = 0; col < ncols(); ++col) {
 551                         //MathData const & c = cell(index(row, col));
 552                         // FIXME: BROKEN!
 553                         Dimension dimc;
 554                         asc  = max(asc,  dimc.ascent());
 555                         desc = max(desc, dimc.descent());
 556                 }
 557                 rowinfo_[row].ascent_  = asc;
 558                 rowinfo_[row].descent_ = desc;
 559         }
 560         //rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 561         rowinfo_[nrows()].ascent_  = 0;
 562         rowinfo_[nrows()].descent_ = 0;
 563
 564         // compute vertical offsets
 565         rowinfo_[0].offset_ = 0;
 566         for (row_type row = 1; row <= nrows(); ++row) {
 567                 rowinfo_[row].offset_  =
 568                         rowinfo_[row - 1].offset_  +
 569                         rowinfo_[row - 1].descent_ +
 570                         //rowinfo_[row - 1].skipPixels(mi) +
 571                         1 + //rowsep() +
 572                         //rowinfo_[row].lines_ * hlinesep() +
 573                         rowinfo_[row].ascent_;
 574         }
 575
 576         // adjust vertical offset
 577         int h = 0;
 578         switch (v_align_) {
 579                 case 't':
 580                         h = 0;
 581                         break;
 582                 case 'b':
 583                         h = rowinfo_[nrows() - 1].offset_;
 584                         break;
 585                 default:
 586                         h = rowinfo_[nrows() - 1].offset_ / 2;
 587         }
 588         for (row_type row = 0; row <= nrows(); ++row)
 589                 rowinfo_[row].offset_ -= h;
 590
 591
 592         // compute absolute sizes of horizontal structure
 593         for (col_type col = 0; col < ncols(); ++col) {
 594                 int wid = 0;
 595                 for (row_type row = 0; row < nrows(); ++row) {
 596                         // FIXME: BROKEN!
 597                         //wid = max(wid, cell(index(row, col)).width());
 598                 }
 599                 colinfo_[col].width_ = wid;
 600         }
 601         colinfo_[ncols()].width_  = 0;
 602
 603         // compute horizontal offsets
 604         colinfo_[0].offset_ = border();
 605         for (col_type col = 1; col <= ncols(); ++col) {
 606                 colinfo_[col].offset_ =
 607                         colinfo_[col - 1].offset_ +
 608                         colinfo_[col - 1].width_ +
 609                         colinfo_[col - 1].skip_ +
 610                         1 ; //colsep() +
 611                         //colinfo_[col].lines_ * vlinesep();
 612         }
 613
 614
 615         dim.wid  =  colinfo_[ncols() - 1].offset_
 616                        + colinfo_[ncols() - 1].width_
 617                  //+ vlinesep() * colinfo_[ncols()].lines_
 618                        + 2;
 619
 620         dim.asc  = -rowinfo_[0].offset_
 621                        + rowinfo_[0].ascent_
 622                  //+ hlinesep() * rowinfo_[0].lines_
 623                        + 1;
 624
 625         dim.des  =  rowinfo_[nrows() - 1].offset_
 626                        + rowinfo_[nrows() - 1].descent_
 627                  //+ hlinesep() * rowinfo_[nrows()].lines_
 628                        + 1;
 629 }
 630
 631
 632 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 633 {
 634 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 635 //              cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 636 }
 637
 638
 639 void InsetMathGrid::updateBuffer(ParIterator const & it, UpdateType utype)
 640 {
 641         // pass down
 642         for (idx_type idx = 0; idx < nargs(); ++idx)
 643                 cell(idx).updateBuffer(it, utype);
 644 }
 645
 646
 647 docstring InsetMathGrid::eolString(row_type row, bool fragile,
 648                 bool /*latex*/, bool last_eoln) const
 649 {
 650         docstring eol;
 651
 652         if (!rowinfo_[row].crskip_.zero())
 653                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 654         else if(!rowinfo_[row].allow_newpage_)
 655                 eol += '*';
 656
 657         // make sure an upcoming '[' does not break anything
 658         if (row + 1 < nrows()) {
 659                 MathData const & c = cell(index(row + 1, 0));
 660                 if (c.size() && c.front()->getChar() == '[')
 661                         //eol += "[0pt]";
 662                         eol += "{}";
 663         }
 664
 665         // only add \\ if necessary
 666         if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !last_eoln))
 667                 return docstring();
 668
 669         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 670 }
 671
 672
 673 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 674 {
 675         if (col + 1 == lastcol)
 676                 return docstring();
 677         return from_ascii(" & ");
 678 }
 679
 680
 681 void InsetMathGrid::addRow(row_type row)
 682 {
 683         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 684         cells_.insert
 685                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
 686         cellinfo_.insert
 687                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 688 }
 689
 690
 691 void InsetMathGrid::delRow(row_type row)
 692 {
 693         if (nrows() == 1)
 694                 return;
 695
 696         cells_type::iterator it = cells_.begin() + row * ncols();
 697         cells_.erase(it, it + ncols());
 698
 699         vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
 700         cellinfo_.erase(jt, jt + ncols());
 701
 702         rowinfo_.erase(rowinfo_.begin() + row);
 703 }
 704
 705
 706 void InsetMathGrid::copyRow(row_type row)
 707 {
 708         addRow(row);
 709         for (col_type col = 0; col < ncols(); ++col)
 710                 cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
 711 }
 712
 713
 714 void InsetMathGrid::swapRow(row_type row)
 715 {
 716         if (nrows() == 1)
 717                 return;
 718         if (row + 1 == nrows())
 719                 --row;
 720         for (col_type col = 0; col < ncols(); ++col)
 721                 swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + col]);
 722 }
 723
 724
 725 void InsetMathGrid::addCol(col_type newcol)
 726 {
 727         const col_type nc = ncols();
 728         const row_type nr = nrows();
 729         cells_type new_cells((nc + 1) * nr);
 730         vector<CellInfo> new_cellinfo((nc + 1) * nr);
 731
 732         for (row_type row = 0; row < nr; ++row)
 733                 for (col_type col = 0; col < nc; ++col) {
 734                         new_cells[row * (nc + 1) + col + (col >= newcol)]
 735                                 = cells_[row * nc + col];
 736                         new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
 737                                 = cellinfo_[row * nc + col];
 738                 }
 739         swap(cells_, new_cells);
 740         swap(cellinfo_, new_cellinfo);
 741
 742         ColInfo inf;
 743         inf.skip_  = defaultColSpace(newcol);
 744         inf.align_ = defaultColAlign(newcol);
 745         colinfo_.insert(colinfo_.begin() + newcol, inf);
 746 }
 747
 748
 749 void InsetMathGrid::delCol(col_type col)
 750 {
 751         if (ncols() == 1)
 752                 return;
 753
 754         cells_type tmpcells;
 755         vector<CellInfo> tmpcellinfo;
 756         for (col_type i = 0; i < nargs(); ++i)
 757                 if (i % ncols() != col) {
 758                         tmpcells.push_back(cells_[i]);
 759                         tmpcellinfo.push_back(cellinfo_[i]);
 760                 }
 761         swap(cells_, tmpcells);
 762         swap(cellinfo_, tmpcellinfo);
 763
 764         colinfo_.erase(colinfo_.begin() + col);
 765 }
 766
 767
 768 void InsetMathGrid::copyCol(col_type col)
 769 {
 770         addCol(col+1);
 771         for (row_type row = 0; row < nrows(); ++row)
 772                 cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
 773 }
 774
 775
 776 void InsetMathGrid::swapCol(col_type col)
 777 {
 778         if (ncols() == 1)
 779                 return;
 780         if (col + 1 == ncols())
 781                 --col;
 782         for (row_type row = 0; row < nrows(); ++row)
 783                 swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 1]);
 784 }
 785
 786
 787 int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
 788 {
 789         col_type c = col(idx);
 790         int x = colinfo_[c].offset_;
 791         char align = displayColAlign(c, row(idx));
 792         Dimension const & celldim = cell(idx).dimension(bv);
 793         if (align == 'r' || align == 'R')
 794                 x += colinfo_[c].width_ - celldim.wid;
 795         if (align == 'c' || align == 'C')
 796                 x += (colinfo_[c].width_ - celldim.wid) / 2;
 797         return x;
 798 }
 799
 800
 801 int InsetMathGrid::cellYOffset(idx_type idx) const
 802 {
 803         return rowinfo_[row(idx)].offset_;
 804 }
 805
 806
 807 bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
 808 {
 809         if (up) {
 810                 if (cur.row() == 0)
 811                         return false;
 812                 cur.idx() -= ncols();
 813         } else {
 814                 if (cur.row() + 1 >= nrows())
 815                         return false;
 816                 cur.idx() += ncols();
 817         }
 818         cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - cur.cell().xo(cur.bv()));
 819         return true;
 820 }
 821
 822
 823 bool InsetMathGrid::idxBackward(Cursor & cur) const
 824 {
 825         // leave matrix if at the front edge
 826         if (cur.col() == 0)
 827                 return false;
 828         --cur.idx();
 829         cur.pos() = cur.lastpos();
 830         return true;
 831 }
 832
 833
 834 bool InsetMathGrid::idxForward(Cursor & cur) const
 835 {
 836         // leave matrix if at the back edge
 837         if (cur.col() + 1 == ncols())
 838                 return false;
 839         ++cur.idx();
 840         cur.pos() = 0;
 841         return true;
 842 }
 843
 844
 845 bool InsetMathGrid::idxFirst(Cursor & cur) const
 846 {
 847         switch (v_align_) {
 848                 case 't':
 849                         cur.idx() = 0;
 850                         break;
 851                 case 'b':
 852                         cur.idx() = (nrows() - 1) * ncols();
 853                         break;
 854                 default:
 855                         cur.idx() = ((nrows() - 1) / 2) * ncols();
 856         }
 857         cur.pos() = 0;
 858         return true;
 859 }
 860
 861
 862 bool InsetMathGrid::idxLast(Cursor & cur) const
 863 {
 864         switch (v_align_) {
 865                 case 't':
 866                         cur.idx() = ncols() - 1;
 867                         break;
 868                 case 'b':
 869                         cur.idx() = nargs() - 1;
 870                         break;
 871                 default:
 872                         cur.idx() = ((nrows() - 1) / 2 + 1) * ncols() - 1;
 873         }
 874         cur.pos() = cur.lastpos();
 875         return true;
 876 }
 877
 878
 879 bool InsetMathGrid::idxDelete(idx_type & idx)
 880 {
 881         // nothing to do if we have just one row
 882         if (nrows() == 1)
 883                 return false;
 884
 885         // nothing to do if we are in the middle of the last row of the inset
 886         if (idx + ncols() > nargs())
 887                 return false;
 888
 889         // try to delete entire sequence of ncols() empty cells if possible
 890         for (idx_type i = idx; i < idx + ncols(); ++i)
 891                 if (cell(i).size())
 892                         return false;
 893
 894         // move cells if necessary
 895         for (idx_type i = index(row(idx), 0); i < idx; ++i)
 896                 swap(cell(i), cell(i + ncols()));
 897
 898         delRow(row(idx));
 899
 900         if (idx >= nargs())
 901                 idx = nargs() - 1;
 902
 903         // undo effect of Ctrl-Tab (i.e. pull next cell)
 904         //if (idx + 1 != nargs())
 905         //      cell(idx).swap(cell(idx + 1));
 906
 907         // we handled the event..
 908         return true;
 909 }
 910
 911
 912 // reimplement old behaviour when pressing Delete in the last position
 913 // of a cell
 914 void InsetMathGrid::idxGlue(idx_type idx)
 915 {
 916         col_type c = col(idx);
 917         if (c + 1 == ncols()) {
 918                 if (row(idx) + 1 != nrows()) {
 919                         for (col_type cc = 0; cc < ncols(); ++cc)
 920                                 cell(idx).append(cell(idx + cc + 1));
 921                         delRow(row(idx) + 1);
 922                 }
 923         } else {
 924                 cell(idx).append(cell(idx + 1));
 925                 for (col_type cc = c + 2; cc < ncols(); ++cc)
 926                         cell(idx - c + cc - 1) = cell(idx - c + cc);
 927                 cell(idx - c + ncols() - 1).clear();
 928         }
 929 }
 930
 931
 932 InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
 933 {
 934         return rowinfo_[row];
 935 }
 936
 937
 938 InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
 939 {
 940         return rowinfo_[row];
 941 }
 942
 943
 944 bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
 945 {
 946         row_type const ri = row(idx);
 947         row_type const r1 = min(row(from), row(to));
 948         row_type const r2 = max(row(from), row(to));
 949         col_type const ci = col(idx);
 950         col_type const c1 = min(col(from), col(to));
 951         col_type const c2 = max(col(from), col(to));
 952         return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
 953 }
 954
 955
 956
 957 void InsetMathGrid::normalize(NormalStream & os) const
 958 {
 959         os << "[grid ";
 960         for (row_type row = 0; row < nrows(); ++row) {
 961                 os << "[row ";
 962                 for (col_type col = 0; col < ncols(); ++col)
 963                         os << "[cell " << cell(index(row, col)) << ']';
 964                 os << ']';
 965         }
 966         os << ']';
 967 }
 968
 969
 970 void InsetMathGrid::mathmlize(MathStream & os) const
 971 {
 972         bool const havetable = nrows() > 1 || ncols() > 1;
 973         if (havetable)
 974                 os << MTag("mtable");
 975         char const * const celltag = havetable ? "mtd" : "mrow";
 976         for (row_type row = 0; row < nrows(); ++row) {
 977                 if (havetable)
 978                         os << MTag("mtr");
 979                 for (col_type col = 0; col < ncols(); ++col) {
 980                         os << MTag(celltag);
 981                         os << cell(index(row, col));
 982                         os << ETag(celltag);
 983                 }
 984                 if (havetable)
 985                         os << ETag("mtr");
 986         }
 987         if (havetable)
 988                 os << ETag("mtable");
 989 }
 990
 991
 992 // FIXME XHTML
 993 // We need to do something about alignment here.
 994 void InsetMathGrid::htmlize(HtmlStream & os, string attrib) const
 995 {
 996         bool const havetable = nrows() > 1 || ncols() > 1;
 997         if (!havetable) {
 998                 os << cell(index(0, 0));
 999                 return;
1000         }
1001         os << MTag("table", attrib);
1002         for (row_type row = 0; row < nrows(); ++row) {
1003                 os << MTag("tr");
1004                 for (col_type col = 0; col < ncols(); ++col) {
1005                         os << MTag("td");
1006                         os << cell(index(row, col));
1007                         os << ETag("td");
1008                 }
1009                 os << ETag("tr");
1010         }
1011         os << ETag("table");
1012 }
1013
1014
1015 void InsetMathGrid::htmlize(HtmlStream & os) const
1016 {
1017         htmlize(os, "class='mathtable'");
1018 }
1019
1020
1021 void InsetMathGrid::write(WriteStream & os) const
1022 {
1023         write(os, 0, 0, nrows(), ncols());
1024 }
1025
1026 void InsetMathGrid::write(WriteStream & os,
1027                           row_type beg_row, col_type beg_col,
1028                           row_type end_row, col_type end_col) const
1029 {
1030         MathEnsurer ensurer(os, false);
1031         docstring eol;
1032         for (row_type row = beg_row; row < end_row; ++row) {
1033                 os << verboseHLine(rowinfo_[row].lines_);
1034                 // don't write & and empty cells at end of line,
1035                 // unless there are vertical lines
1036                 col_type lastcol = 0;
1037                 bool emptyline = true;
1038                 bool last_eoln = true;
1039                 for (col_type col = beg_col; col < end_col; ++col) {
1040                         bool const empty_cell = cell(index(row, col)).empty();
1041                         if (!empty_cell)
1042                                 last_eoln = false;
1043                         if (!empty_cell || colinfo_[col + 1].lines_) {
1044                                 lastcol = col + 1;
1045                                 emptyline = false;
1046                         }
1047                 }
1048                 for (col_type col = beg_col; col < lastcol; ++col) {
1049                         os << cell(index(row, col));
1050                         if (os.pendingBrace())
1051                                 ModeSpecifier specifier(os, TEXT_MODE);
1052                         os << eocString(col, lastcol);
1053                 }
1054                 eol = eolString(row, os.fragile(), os.latex(), last_eoln);
1055                 os << eol;
1056                 // append newline only if line wasn't completely empty
1057                 // and the formula is not written on a single line
1058                 bool const empty = emptyline && eol.empty();
1059                 if (!empty && nrows() > 1)
1060                         os << "\n";
1061         }
1062         // @TODO use end_row instead of nrows() ?
1063         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1064         if (!s.empty()) {
1065                 if (eol.empty()) {
1066                         if (os.fragile())
1067                                 os << "\\protect";
1068                         os << "\\\\";
1069                 }
1070                 os << s;
1071         }
1072 }
1073
1074
1075 int InsetMathGrid::colsep() const
1076 {
1077         return 6;
1078 }
1079
1080
1081 int InsetMathGrid::rowsep() const
1082 {
1083         return 6;
1084 }
1085
1086
1087 int InsetMathGrid::hlinesep() const
1088 {
1089         return 3;
1090 }
1091
1092
1093 int InsetMathGrid::vlinesep() const
1094 {
1095         return 3;
1096 }
1097
1098
1099 int InsetMathGrid::border() const
1100 {
1101         return 1;
1102 }
1103
1104
1105 void InsetMathGrid::splitCell(Cursor & cur)
1106 {
1107         if (cur.idx() == cur.lastidx())
1108                 return;
1109         MathData ar = cur.cell();
1110         ar.erase(0, cur.pos());
1111         cur.cell().erase(cur.pos(), cur.lastpos());
1112         ++cur.idx();
1113         cur.pos() = 0;
1114         cur.cell().insert(0, ar);
1115 }
1116
1117
1118 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1119 {
1120         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1121
1122         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
1123
1124         FuncCode const act = cmd.action();
1125         switch (act) {
1126
1127         // insert file functions
1128         case LFUN_LINE_DELETE:
1129                 cur.recordUndoInset();
1130                 //autocorrect_ = false;
1131                 //macroModeClose();
1132                 //if (selection_) {
1133                 //      selDel();
1134                 //      break;
1135                 //}
1136                 if (nrows() > 1)
1137                         delRow(cur.row());
1138                 if (cur.idx() > cur.lastidx())
1139                         cur.idx() = cur.lastidx();
1140                 if (cur.pos() > cur.lastpos())
1141                         cur.pos() = cur.lastpos();
1142                 break;
1143
1144         case LFUN_CELL_SPLIT:
1145                 cur.recordUndo();
1146                 splitCell(cur);
1147                 break;
1148
1149         case LFUN_CELL_BACKWARD:
1150                 // See below.
1151                 cur.setSelection(false);
1152                 if (!idxPrev(cur)) {
1153                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1154                         cur.undispatched();
1155                 }
1156                 break;
1157
1158         case LFUN_CELL_FORWARD:
1159                 // Can't handle selection by additional 'shift' as this is
1160                 // hard bound to LFUN_CELL_BACKWARD
1161                 cur.setSelection(false);
1162                 if (!idxNext(cur)) {
1163                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1164                         cur.undispatched();
1165                 }
1166                 break;
1167
1168         case LFUN_NEWLINE_INSERT: {
1169                 cur.recordUndoInset();
1170                 row_type const r = cur.row();
1171                 addRow(r);
1172
1173                 // split line
1174                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1175                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1176
1177                 // split cell
1178                 splitCell(cur);
1179                 swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1180                 if (cur.idx() > 0)
1181                         --cur.idx();
1182                 cur.pos() = cur.lastpos();
1183                 cur.forceBufferUpdate();
1184                 //mathcursor->normalize();
1185                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1186                 break;
1187         }
1188
1189         case LFUN_INSET_MODIFY: {
1190                 cur.recordUndoInset();
1191                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1192                 istringstream is(to_utf8(cmd.argument()));
1193                 string s;
1194                 is >> s;
1195                 if (s != "tabular") {
1196                         InsetMathNest::doDispatch(cur, cmd);
1197                         return;
1198                 }
1199                 is >> s;
1200                 if (s == "valign-top")
1201                         setVerticalAlignment('t');
1202                 else if (s == "valign-middle")
1203                         setVerticalAlignment('c');
1204                 else if (s == "valign-bottom")
1205                         setVerticalAlignment('b');
1206                 else if (s == "align-left")
1207                         setHorizontalAlignment('l', cur.col());
1208                 else if (s == "align-right")
1209                         setHorizontalAlignment('r', cur.col());
1210                 else if (s == "align-center")
1211                         setHorizontalAlignment('c', cur.col());
1212                 else if (s == "append-row")
1213                         for (int i = 0, n = extractInt(is); i < n; ++i)
1214                                 addRow(cur.row());
1215                 else if (s == "delete-row") {
1216                         cur.clearSelection(); // bug 4323
1217                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1218                                 delRow(cur.row());
1219                                 if (cur.idx() >= nargs())
1220                                         cur.idx() -= ncols();
1221                         }
1222                         cur.pos() = 0; // trick, see below
1223                 }
1224                 else if (s == "copy-row") {
1225                         // Here (as later) we save the cursor col/row
1226                         // in order to restore it after operation.
1227                         row_type const r = cur.row();
1228                         col_type const c = cur.col();
1229                         for (int i = 0, n = extractInt(is); i < n; ++i)
1230                                 copyRow(cur.row());
1231                         cur.idx() = index(r, c);
1232                 }
1233                 else if (s == "swap-row") {
1234                         swapRow(cur.row());
1235                         // Trick to suppress same-idx-means-different-cell
1236                         // assertion crash:
1237                         cur.pos() = 0;
1238                 }
1239                 else if (s == "add-hline-above")
1240                         rowinfo_[cur.row()].lines_++;
1241                 else if (s == "add-hline-below")
1242                         rowinfo_[cur.row()+1].lines_++;
1243                 else if (s == "delete-hline-above")
1244                         rowinfo_[cur.row()].lines_--;
1245                 else if (s == "delete-hline-below")
1246                         rowinfo_[cur.row()+1].lines_--;
1247                 else if (s == "append-column") {
1248                         row_type const r = cur.row();
1249                         col_type const c = cur.col();
1250                         for (int i = 0, n = extractInt(is); i < n; ++i)
1251                                 addCol(cur.col() + 1);
1252                         cur.idx() = index(r, c);
1253                 }
1254                 else if (s == "delete-column") {
1255                         cur.clearSelection(); // bug 4323
1256                         row_type const r = cur.row();
1257                         col_type const c = cur.col();
1258                         for (int i = 0, n = extractInt(is); i < n; ++i)
1259                                 delCol(col(cur.idx()));
1260                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1261                         cur.pos() = 0; // trick, see above
1262                 }
1263                 else if (s == "copy-column") {
1264                         row_type const r = cur.row();
1265                         col_type const c = cur.col();
1266                         copyCol(cur.col());
1267                         cur.idx() = index(r, c);
1268                 }
1269                 else if (s == "swap-column") {
1270                         swapCol(cur.col());
1271                         cur.pos() = 0; // trick, see above
1272                 }
1273                 else if (s == "add-vline-left") {
1274                         colinfo_[cur.col()].lines_++;
1275                         if (!colinfo_[cur.col()].special_.empty())
1276                                 colinfo_[cur.col()].special_ += '|';
1277                 }
1278                 else if (s == "add-vline-right") {
1279                         colinfo_[cur.col()+1].lines_++;
1280                         if (!colinfo_[cur.col()+1].special_.empty())
1281                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1282                 }
1283                 else if (s == "delete-vline-left") {
1284                         colinfo_[cur.col()].lines_--;
1285                         docstring & special = colinfo_[cur.col()].special_;
1286                         if (!special.empty()) {
1287                                 docstring::size_type i = special.rfind('|');
1288                                 LASSERT(i != docstring::npos, /**/);
1289                                 special.erase(i, 1);
1290                         }
1291                 }
1292                 else if (s == "delete-vline-right") {
1293                         colinfo_[cur.col()+1].lines_--;
1294                         docstring & special = colinfo_[cur.col()+1].special_;
1295                         if (!special.empty()) {
1296                                 docstring::size_type i = special.find('|');
1297                                 LASSERT(i != docstring::npos, /**/);
1298                                 special.erase(i, 1);
1299                         }
1300                 }
1301                 else {
1302                         cur.undispatched();
1303                         break;
1304                 }
1305                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1306                 //lyxerr << "returning FINISHED_LEFT" << endl;
1307                 break;
1308         }
1309
1310         case LFUN_CLIPBOARD_PASTE:
1311                 parseflg |= Parse::VERBATIM;
1312                 // fall through
1313         case LFUN_PASTE: {
1314                 if (cur.currentMode() <= TEXT_MODE)
1315                         parseflg |= Parse::TEXTMODE;
1316                 cur.message(_("Paste"));
1317                 cap::replaceSelection(cur);
1318                 docstring topaste;
1319                 if (cmd.argument().empty() && !theClipboard().isInternal())
1320                         topaste = theClipboard().getAsText();
1321                 else {
1322                         idocstringstream is(cmd.argument());
1323                         int n = 0;
1324                         is >> n;
1325                         topaste = cap::selection(n);
1326                 }
1327                 InsetMathGrid grid(buffer_, 1, 1);
1328                 if (!topaste.empty())
1329                         if ((topaste.size() == 1 && topaste.at(0) < 0x80)
1330                             || !mathed_parse_normal(grid, topaste, parseflg)) {
1331                                 resetGrid(grid);
1332                                 mathed_parse_normal(grid, topaste, parseflg | Parse::VERBATIM);
1333                         }
1334
1335                 if (grid.nargs() == 1) {
1336                         // single cell/part of cell
1337                         cur.recordUndo();
1338                         cur.cell().insert(cur.pos(), grid.cell(0));
1339                         cur.pos() += grid.cell(0).size();
1340                 } else {
1341                         // multiple cells
1342                         cur.recordUndoInset();
1343                         col_type const numcols =
1344                                 min(grid.ncols(), ncols() - col(cur.idx()));
1345                         row_type const numrows =
1346                                 min(grid.nrows(), nrows() - cur.row());
1347                         for (row_type r = 0; r < numrows; ++r) {
1348                                 for (col_type c = 0; c < numcols; ++c) {
1349                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1350                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1351                                 }
1352                                 // append the left over horizontal cells to the last column
1353                                 idx_type i = index(r + cur.row(), ncols() - 1);
1354                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1355                                         cell(i).append(grid.cell(grid.index(r, c)));
1356                         }
1357                         // append the left over vertical cells to the last _cell_
1358                         idx_type i = nargs() - 1;
1359                         for (row_type r = numrows; r < grid.nrows(); ++r)
1360                                 for (col_type c = 0; c < grid.ncols(); ++c)
1361                                         cell(i).append(grid.cell(grid.index(r, c)));
1362                 }
1363                 cur.clearSelection(); // bug 393
1364                 // FIXME audit setBuffer calls
1365                 cur.inset().setBuffer(*buffer_);
1366                 cur.forceBufferUpdate();
1367                 cur.finishUndo();
1368                 break;
1369         }
1370
1371         case LFUN_LINE_BEGIN_SELECT:
1372         case LFUN_LINE_BEGIN:
1373         case LFUN_WORD_BACKWARD_SELECT:
1374         case LFUN_WORD_BACKWARD:
1375         case LFUN_WORD_LEFT_SELECT:
1376         case LFUN_WORD_LEFT:
1377                 cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
1378                                 act == LFUN_WORD_LEFT_SELECT ||
1379                                 act == LFUN_LINE_BEGIN_SELECT);
1380                 cur.macroModeClose();
1381                 if (cur.pos() != 0) {
1382                         cur.pos() = 0;
1383                 } else if (cur.idx() % cur.ncols() != 0) {
1384                         cur.idx() -= cur.idx() % cur.ncols();
1385                         cur.pos() = 0;
1386                 } else if (cur.idx() != 0) {
1387                         cur.idx() = 0;
1388                         cur.pos() = 0;
1389                 } else {
1390                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1391                         cur.undispatched();
1392                 }
1393                 break;
1394
1395         case LFUN_WORD_FORWARD_SELECT:
1396         case LFUN_WORD_FORWARD:
1397         case LFUN_WORD_RIGHT_SELECT:
1398         case LFUN_WORD_RIGHT:
1399         case LFUN_LINE_END_SELECT:
1400         case LFUN_LINE_END:
1401                 cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
1402                                 act == LFUN_WORD_RIGHT_SELECT ||
1403                                 act == LFUN_LINE_END_SELECT);
1404                 cur.macroModeClose();
1405                 cur.clearTargetX();
1406                 if (cur.pos() != cur.lastpos()) {
1407                         cur.pos() = cur.lastpos();
1408                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1409                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1410                         cur.pos() = cur.lastpos();
1411                 } else if (cur.idx() != cur.lastidx()) {
1412                         cur.idx() = cur.lastidx();
1413                         cur.pos() = cur.lastpos();
1414                 } else {
1415                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1416                         cur.undispatched();
1417                 }
1418                 break;
1419
1420         default:
1421                 InsetMathNest::doDispatch(cur, cmd);
1422         }
1423 }
1424
1425
1426 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1427                 FuncStatus & status) const
1428 {
1429         switch (cmd.action()) {
1430         case LFUN_INSET_MODIFY: {
1431                 istringstream is(to_utf8(cmd.argument()));
1432                 string s;
1433                 is >> s;
1434                 if (s != "tabular") {
1435                         // We only now about table actions here.
1436                         break;
1437                 }
1438                 if (&cur.inset() != this) {
1439                         // Table actions requires that the cursor is _inside_ the
1440                         // table.
1441                         status.setEnabled(false);
1442                         status.message(from_utf8(N_("Cursor not in table")));
1443                         return true;
1444                 }
1445                 is >> s;
1446                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1447                         status.setEnabled(false);
1448                         status.message(from_utf8(N_("Only one row")));
1449                         return true;
1450                 }
1451                 if (ncols() <= 1 &&
1452                     (s == "delete-column" || s == "swap-column")) {
1453                         status.setEnabled(false);
1454                         status.message(from_utf8(N_("Only one column")));
1455                         return true;
1456                 }
1457                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1458                      s == "delete-hline-above") ||
1459                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1460                      s == "delete-hline-below")) {
1461                         status.setEnabled(false);
1462                         status.message(from_utf8(N_("No hline to delete")));
1463                         return true;
1464                 }
1465
1466                 if ((colinfo_[cur.col()].lines_ == 0 &&
1467                      s == "delete-vline-left") ||
1468                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1469                      s == "delete-vline-right")) {
1470                         status.setEnabled(false);
1471                         status.message(from_utf8(N_("No vline to delete")));
1472                         return true;
1473                 }
1474                 if (s == "valign-top" || s == "valign-middle" ||
1475                     s == "valign-bottom" || s == "align-left" ||
1476                     s == "align-right" || s == "align-center") {
1477                         status.setEnabled(true);
1478                         char const ha = horizontalAlignment(cur.col());
1479                         char const va = verticalAlignment();
1480                         status.setOnOff((s == "align-left" && ha == 'l')
1481                                         || (s == "align-right"   && ha == 'r')
1482                                         || (s == "align-center"  && ha == 'c')
1483                                         || (s == "valign-top"    && va == 't')
1484                                         || (s == "valign-bottom" && va == 'b')
1485                                         || (s == "valign-middle" && va == 'c'));
1486                         return true;
1487                 }
1488                 if (s == "append-row" || s == "delete-row" ||
1489                     s == "copy-row" || s == "swap-row" ||
1490                     s == "add-hline-above" || s == "add-hline-below" ||
1491                     s == "delete-hline-above" || s == "delete-hline-below" ||
1492                     s == "append-column" || s == "delete-column" ||
1493                     s == "copy-column" || s == "swap-column" ||
1494                     s == "add-vline-left" || s == "add-vline-right" ||
1495                     s == "delete-vline-left" || s == "delete-vline-right") {
1496                         status.setEnabled(true);
1497                 } else {
1498                         status.setEnabled(false);
1499                         status.message(bformat(
1500                                 from_utf8(N_("Unknown tabular feature '%1$s'")), lyx::from_ascii(s)));
1501                 }
1502
1503 #if 0
1504                 // FIXME: What did this code do?
1505                 // Please check whether it is still needed!
1506                 // should be more precise
1507                 if (v_align_ == '\0') {
1508                         status.enable(true);
1509                         break;
1510                 }
1511                 if (cmd.argument().empty()) {
1512                         status.enable(false);
1513                         break;
1514                 }
1515                 if (!contains("tcb", cmd.argument()[0])) {
1516                         status.enable(false);
1517                         break;
1518                 }
1519                 status.setOnOff(cmd.argument()[0] == v_align_);
1520                 status.setEnabled(true);
1521 #endif
1522                 return true;
1523         }
1524
1525         case LFUN_CELL_SPLIT:
1526                 status.setEnabled(cur.idx() != cur.lastidx());
1527                 return true;
1528
1529         case LFUN_CELL_BACKWARD:
1530         case LFUN_CELL_FORWARD:
1531                 status.setEnabled(true);
1532                 return true;
1533
1534         default:
1535                 break;
1536         }
1537         return InsetMathNest::getStatus(cur, cmd, status);
1538 }
1539
1540
1541 } // namespace lyx