src/mathed/InsetMathGrid.cpp

   1 /**
   2  * \file InsetMathGrid.cpp
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author André Pönitz
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12 #include <algorithm>
  13
  14 #include "InsetMathGrid.h"
  15
  16 #include "MathData.h"
  17 #include "MathParser.h"
  18 #include "MathStream.h"
  19 #include "MetricsInfo.h"
  20
  21 #include "BufferView.h"
  22 #include "CutAndPaste.h"
  23 #include "FuncStatus.h"
  24 #include "Cursor.h"
  25 #include "FuncRequest.h"
  26
  27 #include "frontends/Clipboard.h"
  28 #include "frontends/FontMetrics.h"
  29 #include "frontends/Painter.h"
  30
  31 #include "support/debug.h"
  32 #include "support/docstream.h"
  33 #include "support/gettext.h"
  34 #include "support/lstrings.h"
  35
  36 #include "support/lassert.h"
  37
  38 #include <sstream>
  39
  40 using namespace std;
  41 using namespace lyx::support;
  42
  43
  44 namespace lyx {
  45
  46 static docstring verboseHLine(int n)
  47 {
  48         docstring res;
  49         for (int i = 0; i < n; ++i)
  50                 res += "\\hline";
  51         if (n)
  52                 res += ' ';
  53         return res;
  54 }
  55
  56
  57 static int extractInt(istream & is)
  58 {
  59         int num = 1;
  60         is >> num;
  61         return (num == 0) ? 1 : num;
  62 }
  63
  64
  65 static void resetGrid(InsetMathGrid & grid)
  66 {
  67         while (grid.ncols() > 1)
  68                 grid.delCol(grid.ncols());
  69         while (grid.nrows() > 1)
  70                 grid.delRow(grid.nrows());
  71         grid.cell(0).erase(0, grid.cell(0).size());
  72         grid.setDefaults();
  73 }
  74
  75
  76
  77 //////////////////////////////////////////////////////////////
  78
  79
  80 InsetMathGrid::CellInfo::CellInfo()
  81         : dummy_(false)
  82 {}
  83
  84
  85
  86 //////////////////////////////////////////////////////////////
  87
  88
  89 InsetMathGrid::RowInfo::RowInfo()
  90         : lines_(0), skip_(0), allow_newpage_(true)
  91 {}
  92
  93
  94
  95 int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
  96 {
  97         frontend::FontMetrics const & fm = theFontMetrics(mi.base.font);
  98         return crskip_.inPixels(mi.base.textwidth,
  99                                 fm.width(char_type('M')));
 100 }
 101
 102
 103
 104 //////////////////////////////////////////////////////////////
 105
 106
 107 InsetMathGrid::ColInfo::ColInfo()
 108         : align_('c'), lines_(0)
 109 {}
 110
 111
 112 //////////////////////////////////////////////////////////////
 113
 114
 115 InsetMathGrid::InsetMathGrid(Buffer * buf)
 116         : InsetMathNest(buf, 1),
 117           rowinfo_(1 + 1),
 118                 colinfo_(1 + 1),
 119                 cellinfo_(1),
 120                 v_align_('c')
 121 {
 122         setDefaults();
 123 }
 124
 125
 126 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
 127         : InsetMathNest(buf, m * n),
 128           rowinfo_(n + 1),
 129                 colinfo_(m + 1),
 130                 cellinfo_(m * n),
 131                 v_align_('c')
 132 {
 133         setDefaults();
 134 }
 135
 136
 137 InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
 138         docstring const & h)
 139         : InsetMathNest(buf, m * n),
 140           rowinfo_(n + 1),
 141           colinfo_(m + 1),
 142                 cellinfo_(m * n),
 143                 v_align_(v)
 144 {
 145         setDefaults();
 146         setVerticalAlignment(v);
 147         setHorizontalAlignments(h);
 148 }
 149
 150
 151 Inset * InsetMathGrid::clone() const
 152 {
 153         return new InsetMathGrid(*this);
 154 }
 155
 156
 157 InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
 158 {
 159         return col + ncols() * row;
 160 }
 161
 162
 163 void InsetMathGrid::setDefaults()
 164 {
 165         if (ncols() <= 0)
 166                 lyxerr << "positive number of columns expected" << endl;
 167         //if (nrows() <= 0)
 168         //      lyxerr << "positive number of rows expected" << endl;
 169         for (col_type col = 0; col < ncols(); ++col) {
 170                 colinfo_[col].align_ = defaultColAlign(col);
 171                 colinfo_[col].skip_  = defaultColSpace(col);
 172                 colinfo_[col].special_.clear();
 173         }
 174 }
 175
 176
 177 void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
 178 {
 179         col_type col = 0;
 180         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
 181                 char_type c = *it;
 182                 if (c == '|') {
 183                         colinfo_[col].lines_++;
 184                 } else if ((c == 'p' || c == 'm' || c == 'b'||
 185                             c == '!' || c == '@' || c == '>' || c == '<') &&
 186                            it + 1 != hh.end() && *(it + 1) == '{') {
 187                         // @{decl.} and p{width} are standard LaTeX, the
 188                         // others are extensions by array.sty
 189                         bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
 190                         if (newcolumn) {
 191                                 // this declares a new column
 192                                 if (col >= ncols())
 193                                         // Only intercolumn stuff is allowed
 194                                         // in the last dummy column
 195                                         break;
 196                                 colinfo_[col].align_ = 'l';
 197                         } else {
 198                                 // this is intercolumn stuff
 199                                 if (colinfo_[col].special_.empty())
 200                                         // Overtake possible lines
 201                                         colinfo_[col].special_ = docstring(colinfo_[col].lines_, '|');
 202                         }
 203                         int brace_open = 0;
 204                         int brace_close = 0;
 205                         while (it != hh.end()) {
 206                                 c = *it;
 207                                 colinfo_[col].special_ += c;
 208                                 if (c == '{')
 209                                         ++brace_open;
 210                                 else if (c == '}')
 211                                         ++brace_close;
 212                                 ++it;
 213                                 if (brace_open > 0 && brace_open == brace_close)
 214                                         break;
 215                         }
 216                         --it;
 217                         if (newcolumn) {
 218                                 colinfo_[col].lines_ = count(
 219                                         colinfo_[col].special_.begin(),
 220                                         colinfo_[col].special_.end(), '|');
 221                                 LYXERR(Debug::MATHED, "special column separator: `"
 222                                         << to_utf8(colinfo_[col].special_) << '\'');
 223                                 ++col;
 224                                 colinfo_[col].lines_ = 0;
 225                                 colinfo_[col].special_.clear();
 226                         }
 227                 } else if (col >= ncols()) {
 228                         // Only intercolumn stuff is allowed in the last
 229                         // dummy column
 230                         break;
 231                 } else if (c == 'c' || c == 'l' || c == 'r') {
 232                         colinfo_[col].align_ = static_cast<char>(c);
 233                         if (!colinfo_[col].special_.empty()) {
 234                                 colinfo_[col].special_ += c;
 235                                 colinfo_[col].lines_ = count(
 236                                                 colinfo_[col].special_.begin(),
 237                                                 colinfo_[col].special_.end(), '|');
 238                                 LYXERR(Debug::MATHED, "special column separator: `"
 239                                         << to_utf8(colinfo_[col].special_) << '\'');
 240                         }
 241                         ++col;
 242                         colinfo_[col].lines_ = 0;
 243                         colinfo_[col].special_.clear();
 244                 } else {
 245                         lyxerr << "unknown column separator: '" << c << "'" << endl;
 246                 }
 247         }
 248
 249 /*
 250         col_type n = hh.size();
 251         if (n > ncols())
 252                 n = ncols();
 253         for (col_type col = 0; col < n; ++col)
 254                 colinfo_[col].align_ = hh[col];
 255 */
 256 }
 257
 258
 259 InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
 260 {
 261         col_type col = 0;
 262         for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
 263                 if (*it == 'c' || *it == 'l' || *it == 'r'||
 264                     *it == 'p' || *it == 'm' || *it == 'b')
 265                         ++col;
 266         // let's have at least one column, even if we did not recognize its
 267         // alignment
 268         if (col == 0)
 269                 col = 1;
 270         return col;
 271 }
 272
 273
 274 void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
 275 {
 276         colinfo_[col].align_ = h;
 277         if (!colinfo_[col].special_.empty()) {
 278                 char_type & c = colinfo_[col].special_[colinfo_[col].special_.size() - 1];
 279                 if (c == 'l' || c == 'c' || c == 'r')
 280                         c = h;
 281         }
 282         // FIXME: Change alignment of p, m and b columns, too
 283 }
 284
 285
 286 char InsetMathGrid::horizontalAlignment(col_type col) const
 287 {
 288         return colinfo_[col].align_;
 289 }
 290
 291
 292 docstring InsetMathGrid::horizontalAlignments() const
 293 {
 294         docstring res;
 295         for (col_type col = 0; col < ncols(); ++col) {
 296                 if (colinfo_[col].special_.empty()) {
 297                         res += docstring(colinfo_[col].lines_, '|');
 298                         res += colinfo_[col].align_;
 299                 } else
 300                         res += colinfo_[col].special_;
 301         }
 302         if (colinfo_[ncols()].special_.empty())
 303                 return res + docstring(colinfo_[ncols()].lines_, '|');
 304         return res + colinfo_[ncols()].special_;
 305 }
 306
 307
 308 void InsetMathGrid::setVerticalAlignment(char c)
 309 {
 310         v_align_ = c;
 311 }
 312
 313
 314 char InsetMathGrid::verticalAlignment() const
 315 {
 316         return v_align_;
 317 }
 318
 319
 320 InsetMathGrid::col_type InsetMathGrid::ncols() const
 321 {
 322         return colinfo_.size() - 1;
 323 }
 324
 325
 326 InsetMathGrid::row_type InsetMathGrid::nrows() const
 327 {
 328         return rowinfo_.size() - 1;
 329 }
 330
 331
 332 InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
 333 {
 334         return idx % ncols();
 335 }
 336
 337
 338 InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
 339 {
 340         return idx / ncols();
 341 }
 342
 343
 344 void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
 345 {
 346         rowinfo_[row].crskip_ = crskip;
 347 }
 348
 349
 350 Length InsetMathGrid::vcrskip(row_type row) const
 351 {
 352         return rowinfo_[row].crskip_;
 353 }
 354
 355
 356 void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
 357 {
 358         // let the cells adjust themselves
 359         InsetMathNest::metrics(mi);
 360
 361         BufferView & bv = *mi.base.bv;
 362
 363         // compute absolute sizes of vertical structure
 364         for (row_type row = 0; row < nrows(); ++row) {
 365                 int asc  = 0;
 366                 int desc = 0;
 367                 for (col_type col = 0; col < ncols(); ++col) {
 368                         Dimension const & dimc = cell(index(row, col)).dimension(bv);
 369                         asc  = max(asc,  dimc.asc);
 370                         desc = max(desc, dimc.des);
 371                 }
 372                 rowinfo_[row].ascent_  = asc;
 373                 rowinfo_[row].descent_ = desc;
 374         }
 375         rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 376         rowinfo_[nrows()].ascent_  = 0;
 377         rowinfo_[nrows()].descent_ = 0;
 378
 379         // compute vertical offsets
 380         rowinfo_[0].offset_ = 0;
 381         for (row_type row = 1; row <= nrows(); ++row) {
 382                 rowinfo_[row].offset_  =
 383                         rowinfo_[row - 1].offset_  +
 384                         rowinfo_[row - 1].descent_ +
 385                         rowinfo_[row - 1].skipPixels(mi) +
 386                         rowsep() +
 387                         rowinfo_[row].lines_ * hlinesep() +
 388                         rowinfo_[row].ascent_;
 389         }
 390
 391         // adjust vertical offset
 392         int h = 0;
 393         switch (v_align_) {
 394                 case 't':
 395                         h = 0;
 396                         break;
 397                 case 'b':
 398                         h = rowinfo_[nrows() - 1].offset_;
 399                         break;
 400                 default:
 401                         h = rowinfo_[nrows() - 1].offset_ / 2;
 402         }
 403         for (row_type row = 0; row <= nrows(); ++row)
 404                 rowinfo_[row].offset_ -= h;
 405
 406
 407         // compute absolute sizes of horizontal structure
 408         for (col_type col = 0; col < ncols(); ++col) {
 409                 int wid = 0;
 410                 for (row_type row = 0; row < nrows(); ++row)
 411                         wid = max(wid, cell(index(row, col)).dimension(bv).wid);
 412                 colinfo_[col].width_ = wid;
 413         }
 414         colinfo_[ncols()].width_  = 0;
 415
 416         // compute horizontal offsets
 417         colinfo_[0].offset_ = border();
 418         for (col_type col = 1; col <= ncols(); ++col) {
 419                 colinfo_[col].offset_ =
 420                         colinfo_[col - 1].offset_ +
 421                         colinfo_[col - 1].width_ +
 422                         colinfo_[col - 1].skip_ +
 423                         colsep() +
 424                         colinfo_[col].lines_ * vlinesep();
 425         }
 426
 427
 428         dim.wid   =   colinfo_[ncols() - 1].offset_
 429                        + colinfo_[ncols() - 1].width_
 430                  + vlinesep() * colinfo_[ncols()].lines_
 431                        + border();
 432
 433         dim.asc  = - rowinfo_[0].offset_
 434                        + rowinfo_[0].ascent_
 435                  + hlinesep() * rowinfo_[0].lines_
 436                        + border();
 437
 438         dim.des =   rowinfo_[nrows() - 1].offset_
 439                        + rowinfo_[nrows() - 1].descent_
 440                  + hlinesep() * rowinfo_[nrows()].lines_
 441                        + border();
 442
 443
 444 /*
 445         // Increase ws_[i] for 'R' columns (except the first one)
 446         for (int i = 1; i < nc_; ++i)
 447                 if (align_[i] == 'R')
 448                         ws_[i] += 10 * df_width;
 449         // Increase ws_[i] for 'C' column
 450         if (align_[0] == 'C')
 451                 if (ws_[0] < 7 * workwidth / 8)
 452                         ws_[0] = 7 * workwidth / 8;
 453
 454         // Adjust local tabs
 455         width = colsep();
 456         for (cxrow = row_.begin(); cxrow; ++cxrow) {
 457                 int rg = COLSEP;
 458                 int lf = 0;
 459                 for (int i = 0; i < nc_; ++i) {
 460                         bool isvoid = false;
 461                         if (cxrow->getTab(i) <= 0) {
 462                                 cxrow->setTab(i, df_width);
 463                                 isvoid = true;
 464                         }
 465                         switch (align_[i]) {
 466                         case 'l':
 467                                 lf = 0;
 468                                 break;
 469                         case 'c':
 470                                 lf = (ws_[i] - cxrow->getTab(i))/2;
 471                                 break;
 472                         case 'r':
 473                         case 'R':
 474                                 lf = ws_[i] - cxrow->getTab(i);
 475                                 break;
 476                         case 'C':
 477                                 if (cxrow == row_.begin())
 478                                         lf = 0;
 479                                 else if (cxrow.is_last())
 480                                         lf = ws_[i] - cxrow->getTab(i);
 481                                 else
 482                                         lf = (ws_[i] - cxrow->getTab(i))/2;
 483                                 break;
 484                         }
 485                         int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
 486                         cxrow->setTab(i, lf + rg);
 487                         rg = ws_[i] - ww + colsep();
 488                         if (cxrow == row_.begin())
 489                                 width += ws_[i] + colsep();
 490                 }
 491                 cxrow->setBaseline(cxrow->getBaseline() - ascent);
 492         }
 493 */
 494         metricsMarkers2(dim);
 495         // Cache the inset dimension.
 496         setDimCache(mi, dim);
 497 }
 498
 499
 500 void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
 501 {
 502         drawWithMargin(pi, x, y, 1, 1);
 503 }
 504
 505
 506 void InsetMathGrid::drawWithMargin(PainterInfo & pi, int x, int y,
 507         int lmargin, int rmargin) const
 508 {
 509         Dimension const dim = dimension(*pi.base.bv);
 510         BufferView const & bv = *pi.base.bv;
 511
 512         for (idx_type idx = 0; idx < nargs(); ++idx)
 513                 cell(idx).draw(pi, x + lmargin + cellXOffset(bv, idx),
 514                         y + cellYOffset(idx));
 515
 516         for (row_type row = 0; row <= nrows(); ++row)
 517                 for (unsigned int i = 0; i < rowinfo_[row].lines_; ++i) {
 518                         int yy = y + rowinfo_[row].offset_ - rowinfo_[row].ascent_
 519                                 - i * hlinesep() - hlinesep()/2 - rowsep()/2;
 520                         pi.pain.line(x + lmargin + 1, yy,
 521                                      x + dim.width() - rmargin - 1, yy,
 522                                      Color_foreground);
 523                 }
 524
 525         for (col_type col = 0; col <= ncols(); ++col)
 526                 for (unsigned int i = 0; i < colinfo_[col].lines_; ++i) {
 527                         int xx = x + lmargin + colinfo_[col].offset_
 528                                 - i * vlinesep() - vlinesep()/2 - colsep()/2;
 529                         pi.pain.line(xx, y - dim.ascent() + 1,
 530                                      xx, y + dim.descent() - 1,
 531                                      Color_foreground);
 532                 }
 533         drawMarkers2(pi, x, y);
 534 }
 535
 536
 537 void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
 538 {
 539         // let the cells adjust themselves
 540         //InsetMathNest::metrics(mi);
 541         for (idx_type i = 0; i < nargs(); ++i)
 542                 cell(i).metricsT(mi, dim);
 543
 544         // compute absolute sizes of vertical structure
 545         for (row_type row = 0; row < nrows(); ++row) {
 546                 int asc  = 0;
 547                 int desc = 0;
 548                 for (col_type col = 0; col < ncols(); ++col) {
 549                         //MathData const & c = cell(index(row, col));
 550                         // FIXME: BROKEN!
 551                         Dimension dimc;
 552                         asc  = max(asc,  dimc.ascent());
 553                         desc = max(desc, dimc.descent());
 554                 }
 555                 rowinfo_[row].ascent_  = asc;
 556                 rowinfo_[row].descent_ = desc;
 557         }
 558         //rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
 559         rowinfo_[nrows()].ascent_  = 0;
 560         rowinfo_[nrows()].descent_ = 0;
 561
 562         // compute vertical offsets
 563         rowinfo_[0].offset_ = 0;
 564         for (row_type row = 1; row <= nrows(); ++row) {
 565                 rowinfo_[row].offset_  =
 566                         rowinfo_[row - 1].offset_  +
 567                         rowinfo_[row - 1].descent_ +
 568                         //rowinfo_[row - 1].skipPixels(mi) +
 569                         1 + //rowsep() +
 570                         //rowinfo_[row].lines_ * hlinesep() +
 571                         rowinfo_[row].ascent_;
 572         }
 573
 574         // adjust vertical offset
 575         int h = 0;
 576         switch (v_align_) {
 577                 case 't':
 578                         h = 0;
 579                         break;
 580                 case 'b':
 581                         h = rowinfo_[nrows() - 1].offset_;
 582                         break;
 583                 default:
 584                         h = rowinfo_[nrows() - 1].offset_ / 2;
 585         }
 586         for (row_type row = 0; row <= nrows(); ++row)
 587                 rowinfo_[row].offset_ -= h;
 588
 589
 590         // compute absolute sizes of horizontal structure
 591         for (col_type col = 0; col < ncols(); ++col) {
 592                 int wid = 0;
 593                 for (row_type row = 0; row < nrows(); ++row) {
 594                         // FIXME: BROKEN!
 595                         //wid = max(wid, cell(index(row, col)).width());
 596                 }
 597                 colinfo_[col].width_ = wid;
 598         }
 599         colinfo_[ncols()].width_  = 0;
 600
 601         // compute horizontal offsets
 602         colinfo_[0].offset_ = border();
 603         for (col_type col = 1; col <= ncols(); ++col) {
 604                 colinfo_[col].offset_ =
 605                         colinfo_[col - 1].offset_ +
 606                         colinfo_[col - 1].width_ +
 607                         colinfo_[col - 1].skip_ +
 608                         1 ; //colsep() +
 609                         //colinfo_[col].lines_ * vlinesep();
 610         }
 611
 612
 613         dim.wid  =  colinfo_[ncols() - 1].offset_
 614                        + colinfo_[ncols() - 1].width_
 615                  //+ vlinesep() * colinfo_[ncols()].lines_
 616                        + 2;
 617
 618         dim.asc  = -rowinfo_[0].offset_
 619                        + rowinfo_[0].ascent_
 620                  //+ hlinesep() * rowinfo_[0].lines_
 621                        + 1;
 622
 623         dim.des  =  rowinfo_[nrows() - 1].offset_
 624                        + rowinfo_[nrows() - 1].descent_
 625                  //+ hlinesep() * rowinfo_[nrows()].lines_
 626                        + 1;
 627 }
 628
 629
 630 void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
 631 {
 632 //      for (idx_type idx = 0; idx < nargs(); ++idx)
 633 //              cell(idx).drawT(pain, x + cellXOffset(idx), y + cellYOffset(idx));
 634 }
 635
 636
 637 docstring InsetMathGrid::eolString(row_type row, bool fragile) const
 638 {
 639         docstring eol;
 640
 641         if (!rowinfo_[row].crskip_.zero())
 642                 eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + ']';
 643         else if(!rowinfo_[row].allow_newpage_)
 644                 eol += '*';
 645
 646         // make sure an upcoming '[' does not break anything
 647         if (row + 1 < nrows()) {
 648                 MathData const & c = cell(index(row + 1, 0));
 649                 if (c.size() && c.front()->getChar() == '[')
 650                         //eol += "[0pt]";
 651                         eol += "{}";
 652         }
 653
 654         // only add \\ if necessary
 655         if (eol.empty() && row + 1 == nrows())
 656                 return docstring();
 657
 658         return (fragile ? "\\protect\\\\" : "\\\\") + eol;
 659 }
 660
 661
 662 docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
 663 {
 664         if (col + 1 == lastcol)
 665                 return docstring();
 666         return from_ascii(" & ");
 667 }
 668
 669
 670 void InsetMathGrid::addRow(row_type row)
 671 {
 672         rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
 673         cells_.insert
 674                 (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
 675         cellinfo_.insert
 676                 (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
 677 }
 678
 679
 680 void InsetMathGrid::appendRow()
 681 {
 682         rowinfo_.push_back(RowInfo());
 683         //cells_.insert(cells_.end(), ncols(), MathData());
 684         for (col_type col = 0; col < ncols(); ++col) {
 685                 cells_.push_back(cells_type::value_type());
 686                 cellinfo_.push_back(CellInfo());
 687         }
 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 = colinfo_[c].align_;
 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;
 973         if (havetable)
 974                 os << MTag("mtable");
 975         for (row_type row = 0; row < nrows(); ++row) {
 976                 os << MTag("mrow");
 977                 for (col_type col = 0; col < ncols(); ++col)
 978                         os << cell(index(row, col));
 979                 os << ETag("mrow");
 980         }
 981         if (havetable)
 982                 os << ETag("mtable");
 983 }
 984
 985
 986 void InsetMathGrid::write(WriteStream & os) const
 987 {
 988         write(os, 0, 0, nrows(), ncols());
 989 }
 990
 991 void InsetMathGrid::write(WriteStream & os,
 992                           row_type beg_row, col_type beg_col,
 993                           row_type end_row, col_type end_col) const
 994 {
 995         MathEnsurer ensurer(os, false);
 996         docstring eol;
 997         for (row_type row = beg_row; row < end_row; ++row) {
 998                 os << verboseHLine(rowinfo_[row].lines_);
 999                 // don't write & and empty cells at end of line,
1000                 // unless there are vertical lines
1001                 col_type lastcol = 0;
1002                 bool emptyline = true;
1003                 for (col_type col = beg_col; col < end_col; ++col)
1004                         if (!cell(index(row, col)).empty()
1005                                   || colinfo_[col + 1].lines_) {
1006                                 lastcol = col + 1;
1007                                 emptyline = false;
1008                         }
1009                 for (col_type col = beg_col; col < lastcol; ++col) {
1010                         os << cell(index(row, col));
1011                         if (os.pendingBrace())
1012                                 ModeSpecifier specifier(os, TEXT_MODE);
1013                         os << eocString(col, lastcol);
1014                 }
1015                 eol = eolString(row, os.fragile());
1016                 os << eol;
1017                 // append newline only if line wasn't completely empty
1018                 // and the formula is not written on a single line
1019                 bool const empty = emptyline && eol.empty();
1020                 if (!empty && nrows() > 1)
1021                         os << "\n";
1022         }
1023         // @TODO use end_row instead of nrows() ?
1024         docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
1025         if (!s.empty()) {
1026                 if (eol.empty()) {
1027                         if (os.fragile())
1028                                 os << "\\protect";
1029                         os << "\\\\";
1030                 }
1031                 os << s;
1032         }
1033 }
1034
1035
1036 int InsetMathGrid::colsep() const
1037 {
1038         return 6;
1039 }
1040
1041
1042 int InsetMathGrid::rowsep() const
1043 {
1044         return 6;
1045 }
1046
1047
1048 int InsetMathGrid::hlinesep() const
1049 {
1050         return 3;
1051 }
1052
1053
1054 int InsetMathGrid::vlinesep() const
1055 {
1056         return 3;
1057 }
1058
1059
1060 int InsetMathGrid::border() const
1061 {
1062         return 1;
1063 }
1064
1065
1066 void InsetMathGrid::splitCell(Cursor & cur)
1067 {
1068         if (cur.idx() == cur.lastidx())
1069                 return;
1070         MathData ar = cur.cell();
1071         ar.erase(0, cur.pos());
1072         cur.cell().erase(cur.pos(), cur.lastpos());
1073         ++cur.idx();
1074         cur.pos() = 0;
1075         cur.cell().insert(0, ar);
1076 }
1077
1078
1079 void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
1080 {
1081         //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
1082
1083         Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
1084
1085         switch (cmd.action) {
1086
1087         // insert file functions
1088         case LFUN_LINE_DELETE:
1089                 cur.recordUndoInset();
1090                 //autocorrect_ = false;
1091                 //macroModeClose();
1092                 //if (selection_) {
1093                 //      selDel();
1094                 //      break;
1095                 //}
1096                 if (nrows() > 1)
1097                         delRow(cur.row());
1098                 if (cur.idx() > cur.lastidx())
1099                         cur.idx() = cur.lastidx();
1100                 if (cur.pos() > cur.lastpos())
1101                         cur.pos() = cur.lastpos();
1102                 break;
1103
1104         case LFUN_CELL_SPLIT:
1105                 cur.recordUndo();
1106                 splitCell(cur);
1107                 break;
1108
1109         case LFUN_CELL_BACKWARD:
1110                 // See below.
1111                 cur.setSelection(false);
1112                 if (!idxPrev(cur)) {
1113                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1114                         cur.undispatched();
1115                 }
1116                 break;
1117
1118         case LFUN_CELL_FORWARD:
1119                 // Can't handle selection by additional 'shift' as this is
1120                 // hard bound to LFUN_CELL_BACKWARD
1121                 cur.setSelection(false);
1122                 if (!idxNext(cur)) {
1123                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1124                         cur.undispatched();
1125                 }
1126                 break;
1127
1128         case LFUN_NEWLINE_INSERT: {
1129                 cur.recordUndoInset();
1130                 row_type const r = cur.row();
1131                 addRow(r);
1132
1133                 // split line
1134                 for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
1135                         swap(cell(index(r, c)), cell(index(r + 1, c)));
1136
1137                 // split cell
1138                 splitCell(cur);
1139                 swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
1140                 if (cur.idx() > 0)
1141                         --cur.idx();
1142                 cur.pos() = cur.lastpos();
1143
1144                 //mathcursor->normalize();
1145                 //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1146                 break;
1147         }
1148
1149         case LFUN_TABULAR_FEATURE: {
1150                 cur.recordUndoInset();
1151                 //lyxerr << "handling tabular-feature " << to_utf8(cmd.argument()) << endl;
1152                 istringstream is(to_utf8(cmd.argument()));
1153                 string s;
1154                 is >> s;
1155                 if (s == "valign-top")
1156                         setVerticalAlignment('t');
1157                 else if (s == "valign-middle")
1158                         setVerticalAlignment('c');
1159                 else if (s == "valign-bottom")
1160                         setVerticalAlignment('b');
1161                 else if (s == "align-left")
1162                         setHorizontalAlignment('l', cur.col());
1163                 else if (s == "align-right")
1164                         setHorizontalAlignment('r', cur.col());
1165                 else if (s == "align-center")
1166                         setHorizontalAlignment('c', cur.col());
1167                 else if (s == "append-row")
1168                         for (int i = 0, n = extractInt(is); i < n; ++i)
1169                                 addRow(cur.row());
1170                 else if (s == "delete-row") {
1171                         cur.clearSelection(); // bug 4323
1172                         for (int i = 0, n = extractInt(is); i < n; ++i) {
1173                                 delRow(cur.row());
1174                                 if (cur.idx() >= nargs())
1175                                         cur.idx() -= ncols();
1176                         }
1177                         cur.pos() = 0; // trick, see below
1178                 }
1179                 else if (s == "copy-row") {
1180                         // Here (as later) we save the cursor col/row
1181                         // in order to restore it after operation.
1182                         row_type const r = cur.row();
1183                         col_type const c = cur.col();
1184                         for (int i = 0, n = extractInt(is); i < n; ++i)
1185                                 copyRow(cur.row());
1186                         cur.idx() = index(r, c);
1187                 }
1188                 else if (s == "swap-row") {
1189                         swapRow(cur.row());
1190                         // Trick to suppress same-idx-means-different-cell
1191                         // assertion crash:
1192                         cur.pos() = 0;
1193                 }
1194                 else if (s == "add-hline-above")
1195                         rowinfo_[cur.row()].lines_++;
1196                 else if (s == "add-hline-below")
1197                         rowinfo_[cur.row()+1].lines_++;
1198                 else if (s == "delete-hline-above")
1199                         rowinfo_[cur.row()].lines_--;
1200                 else if (s == "delete-hline-below")
1201                         rowinfo_[cur.row()+1].lines_--;
1202                 else if (s == "append-column") {
1203                         row_type const r = cur.row();
1204                         col_type const c = cur.col();
1205                         for (int i = 0, n = extractInt(is); i < n; ++i)
1206                                 addCol(cur.col() + 1);
1207                         cur.idx() = index(r, c);
1208                 }
1209                 else if (s == "delete-column") {
1210                         cur.clearSelection(); // bug 4323
1211                         row_type const r = cur.row();
1212                         col_type const c = cur.col();
1213                         for (int i = 0, n = extractInt(is); i < n; ++i)
1214                                 delCol(col(cur.idx()));
1215                         cur.idx() = index(r, min(c, cur.ncols() - 1));
1216                         cur.pos() = 0; // trick, see above
1217                 }
1218                 else if (s == "copy-column") {
1219                         row_type const r = cur.row();
1220                         col_type const c = cur.col();
1221                         copyCol(cur.col());
1222                         cur.idx() = index(r, c);
1223                 }
1224                 else if (s == "swap-column") {
1225                         swapCol(cur.col());
1226                         cur.pos() = 0; // trick, see above
1227                 }
1228                 else if (s == "add-vline-left") {
1229                         colinfo_[cur.col()].lines_++;
1230                         if (!colinfo_[cur.col()].special_.empty())
1231                                 colinfo_[cur.col()].special_ += '|';
1232                 }
1233                 else if (s == "add-vline-right") {
1234                         colinfo_[cur.col()+1].lines_++;
1235                         if (!colinfo_[cur.col()+1].special_.empty())
1236                                 colinfo_[cur.col()+1].special_.insert(0, 1, '|');
1237                 }
1238                 else if (s == "delete-vline-left") {
1239                         colinfo_[cur.col()].lines_--;
1240                         docstring & special = colinfo_[cur.col()].special_;
1241                         if (!special.empty()) {
1242                                 docstring::size_type i = special.rfind('|');
1243                                 LASSERT(i != docstring::npos, /**/);
1244                                 special.erase(i, 1);
1245                         }
1246                 }
1247                 else if (s == "delete-vline-right") {
1248                         colinfo_[cur.col()+1].lines_--;
1249                         docstring & special = colinfo_[cur.col()+1].special_;
1250                         if (!special.empty()) {
1251                                 docstring::size_type i = special.find('|');
1252                                 LASSERT(i != docstring::npos, /**/);
1253                                 special.erase(i, 1);
1254                         }
1255                 }
1256                 else {
1257                         cur.undispatched();
1258                         break;
1259                 }
1260                 // perhaps this should be FINISHED_BACKWARD -- just for clarity?
1261                 //lyxerr << "returning FINISHED_LEFT" << endl;
1262                 break;
1263         }
1264
1265         case LFUN_CLIPBOARD_PASTE:
1266                 parseflg |= Parse::VERBATIM;
1267                 // fall through
1268         case LFUN_PASTE: {
1269                 if (cur.currentMode() <= TEXT_MODE)
1270                         parseflg |= Parse::TEXTMODE;
1271                 cur.message(_("Paste"));
1272                 cap::replaceSelection(cur);
1273                 docstring topaste;
1274                 if (cmd.argument().empty() && !theClipboard().isInternal())
1275                         topaste = theClipboard().getAsText();
1276                 else {
1277                         idocstringstream is(cmd.argument());
1278                         int n = 0;
1279                         is >> n;
1280                         topaste = cap::selection(n);
1281                 }
1282                 InsetMathGrid grid(buffer_, 1, 1);
1283                 if (!topaste.empty())
1284                         if ((topaste.size() == 1 && topaste.at(0) < 0x80)
1285                             || !mathed_parse_normal(grid, topaste, parseflg)) {
1286                                 resetGrid(grid);
1287                                 mathed_parse_normal(grid, topaste, parseflg | Parse::VERBATIM);
1288                         }
1289
1290                 if (grid.nargs() == 1) {
1291                         // single cell/part of cell
1292                         cur.recordUndo();
1293                         cur.cell().insert(cur.pos(), grid.cell(0));
1294                         cur.pos() += grid.cell(0).size();
1295                 } else {
1296                         // multiple cells
1297                         cur.recordUndoInset();
1298                         col_type const numcols =
1299                                 min(grid.ncols(), ncols() - col(cur.idx()));
1300                         row_type const numrows =
1301                                 min(grid.nrows(), nrows() - cur.row());
1302                         for (row_type r = 0; r < numrows; ++r) {
1303                                 for (col_type c = 0; c < numcols; ++c) {
1304                                         idx_type i = index(r + cur.row(), c + col(cur.idx()));
1305                                         cell(i).insert(0, grid.cell(grid.index(r, c)));
1306                                 }
1307                                 // append the left over horizontal cells to the last column
1308                                 idx_type i = index(r + cur.row(), ncols() - 1);
1309                                 for (InsetMath::col_type c = numcols; c < grid.ncols(); ++c)
1310                                         cell(i).append(grid.cell(grid.index(r, c)));
1311                         }
1312                         // append the left over vertical cells to the last _cell_
1313                         idx_type i = nargs() - 1;
1314                         for (row_type r = numrows; r < grid.nrows(); ++r)
1315                                 for (col_type c = 0; c < grid.ncols(); ++c)
1316                                         cell(i).append(grid.cell(grid.index(r, c)));
1317                 }
1318                 cur.clearSelection(); // bug 393
1319                 cur.finishUndo();
1320                 break;
1321         }
1322
1323         case LFUN_LINE_BEGIN_SELECT:
1324         case LFUN_LINE_BEGIN:
1325         case LFUN_WORD_BACKWARD_SELECT:
1326         case LFUN_WORD_BACKWARD:
1327         case LFUN_WORD_LEFT_SELECT:
1328         case LFUN_WORD_LEFT:
1329                 cur.selHandle(cmd.action == LFUN_WORD_BACKWARD_SELECT ||
1330                                 cmd.action == LFUN_WORD_LEFT_SELECT ||
1331                                 cmd.action == LFUN_LINE_BEGIN_SELECT);
1332                 cur.macroModeClose();
1333                 if (cur.pos() != 0) {
1334                         cur.pos() = 0;
1335                 } else if (cur.idx() % cur.ncols() != 0) {
1336                         cur.idx() -= cur.idx() % cur.ncols();
1337                         cur.pos() = 0;
1338                 } else if (cur.idx() != 0) {
1339                         cur.idx() = 0;
1340                         cur.pos() = 0;
1341                 } else {
1342                         cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
1343                         cur.undispatched();
1344                 }
1345                 break;
1346
1347         case LFUN_WORD_FORWARD_SELECT:
1348         case LFUN_WORD_FORWARD:
1349         case LFUN_WORD_RIGHT_SELECT:
1350         case LFUN_WORD_RIGHT:
1351         case LFUN_LINE_END_SELECT:
1352         case LFUN_LINE_END:
1353                 cur.selHandle(cmd.action == LFUN_WORD_FORWARD_SELECT ||
1354                                 cmd.action == LFUN_WORD_RIGHT_SELECT ||
1355                                 cmd.action == LFUN_LINE_END_SELECT);
1356                 cur.macroModeClose();
1357                 cur.clearTargetX();
1358                 if (cur.pos() != cur.lastpos()) {
1359                         cur.pos() = cur.lastpos();
1360                 } else if ((cur.idx() + 1) % cur.ncols() != 0) {
1361                         cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
1362                         cur.pos() = cur.lastpos();
1363                 } else if (cur.idx() != cur.lastidx()) {
1364                         cur.idx() = cur.lastidx();
1365                         cur.pos() = cur.lastpos();
1366                 } else {
1367                         cmd = FuncRequest(LFUN_FINISHED_FORWARD);
1368                         cur.undispatched();
1369                 }
1370                 break;
1371
1372         default:
1373                 InsetMathNest::doDispatch(cur, cmd);
1374         }
1375 }
1376
1377
1378 bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
1379                 FuncStatus & status) const
1380 {
1381         switch (cmd.action) {
1382         case LFUN_TABULAR_FEATURE: {
1383                 string const s = cmd.getArg(0);
1384                 if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
1385                         status.setEnabled(false);
1386                         status.message(from_utf8(N_("Only one row")));
1387                         return true;
1388                 }
1389                 if (ncols() <= 1 &&
1390                     (s == "delete-column" || s == "swap-column")) {
1391                         status.setEnabled(false);
1392                         status.message(from_utf8(N_("Only one column")));
1393                         return true;
1394                 }
1395                 if ((rowinfo_[cur.row()].lines_ == 0 &&
1396                      s == "delete-hline-above") ||
1397                     (rowinfo_[cur.row() + 1].lines_ == 0 &&
1398                      s == "delete-hline-below")) {
1399                         status.setEnabled(false);
1400                         status.message(from_utf8(N_("No hline to delete")));
1401                         return true;
1402                 }
1403
1404                 if ((colinfo_[cur.col()].lines_ == 0 &&
1405                      s == "delete-vline-left") ||
1406                     (colinfo_[cur.col() + 1].lines_ == 0 &&
1407                      s == "delete-vline-right")) {
1408                         status.setEnabled(false);
1409                         status.message(from_utf8(N_("No vline to delete")));
1410                         return true;
1411                 }
1412                 if (s == "valign-top" || s == "valign-middle" ||
1413                     s == "valign-bottom" || s == "align-left" ||
1414                     s == "align-right" || s == "align-center") {
1415                         status.setEnabled(true);
1416                         char const ha = horizontalAlignment(cur.col());
1417                         char const va = verticalAlignment();
1418                         status.setOnOff((s == "align-left" && ha == 'l')
1419                                         || (s == "align-right"   && ha == 'r')
1420                                         || (s == "align-center"  && ha == 'c')
1421                                         || (s == "valign-top"    && va == 't')
1422                                         || (s == "valign-bottom" && va == 'b')
1423                                         || (s == "valign-middle" && va == 'c'));
1424                         return true;
1425                 }
1426                 if (s == "append-row" || s == "delete-row" ||
1427                     s == "copy-row" || s == "swap-row" ||
1428                     s == "add-hline-above" || s == "add-hline-below" ||
1429                     s == "delete-hline-above" || s == "delete-hline-below" ||
1430                     s == "append-column" || s == "delete-column" ||
1431                     s == "copy-column" || s == "swap-column" ||
1432                     s == "add-vline-left" || s == "add-vline-right" ||
1433                     s == "delete-vline-left" || s == "delete-vline-right") {
1434                         status.setEnabled(true);
1435                 } else {
1436                         status.setEnabled(false);
1437                         status.message(bformat(
1438                                 from_utf8(N_("Unknown tabular feature '%1$s'")), lyx::from_ascii(s)));
1439                 }
1440
1441 #if 0
1442                 // FIXME: What did this code do?
1443                 // Please check whether it is still needed!
1444                 // should be more precise
1445                 if (v_align_ == '\0') {
1446                         status.enable(true);
1447                         break;
1448                 }
1449                 if (cmd.argument().empty()) {
1450                         status.enable(false);
1451                         break;
1452                 }
1453                 if (!contains("tcb", cmd.argument()[0])) {
1454                         status.enable(false);
1455                         break;
1456                 }
1457                 status.setOnOff(cmd.argument()[0] == v_align_);
1458                 status.setEnabled(true);
1459 #endif
1460                 return true;
1461         }
1462
1463         case LFUN_CELL_SPLIT:
1464                 status.setEnabled(true);
1465                 return true;
1466
1467         case LFUN_CELL_BACKWARD:
1468         case LFUN_CELL_FORWARD:
1469                 status.setEnabled(true);
1470                 return true;
1471
1472         default:
1473                 return InsetMathNest::getStatus(cur, cmd, status);
1474         }
1475 }
1476
1477
1478 } // namespace lyx