src/CutAndPaste.C

   1 /*
   2  * \file CutAndPaste.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Jürgen Vigna
   7  * \author Lars Gullik Bjønnes
   8  * \author Alfredo Braunstein
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #include <config.h>
  14
  15 #include "CutAndPaste.h"
  16
  17 #include "buffer.h"
  18 #include "buffer_funcs.h"
  19 #include "bufferparams.h"
  20 #include "BufferView.h"
  21 #include "cursor.h"
  22 #include "debug.h"
  23 #include "errorlist.h"
  24 #include "funcrequest.h"
  25 #include "gettext.h"
  26 #include "insetiterator.h"
  27 #include "language.h"
  28 #include "lfuns.h"
  29 #include "lyxrc.h"
  30 #include "lyxtext.h"
  31 #include "lyxtextclasslist.h"
  32 #include "paragraph.h"
  33 #include "paragraph_funcs.h"
  34 #include "ParagraphParameters.h"
  35 #include "ParagraphList_fwd.h"
  36 #include "pariterator.h"
  37 #include "undo.h"
  38
  39 #include "insets/insetcharstyle.h"
  40 #include "insets/insettabular.h"
  41
  42 #include "mathed/MathData.h"
  43 #include "mathed/InsetMath.h"
  44 #include "mathed/MathSupport.h"
  45
  46 #include "support/lstrings.h"
  47
  48 #include "frontends/Gui.h"
  49 #include "frontends/LyXView.h"
  50 #include "frontends/Clipboard.h"
  51
  52 #include <boost/tuple/tuple.hpp>
  53
  54 using lyx::pos_type;
  55 using lyx::pit_type;
  56 using lyx::textclass_type;
  57
  58 using lyx::support::bformat;
  59
  60 using lyx::frontend::Gui;
  61 using lyx::frontend::Clipboard;
  62
  63 using std::endl;
  64 using std::for_each;
  65 using std::make_pair;
  66 using std::pair;
  67 using std::vector;
  68 using std::string;
  69
  70
  71 namespace {
  72
  73 typedef std::pair<lyx::pit_type, int> PitPosPair;
  74
  75 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  76
  77 CutStack theCuts(10);
  78
  79 // store whether the tabular stack is newer than the normal copy stack
  80 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  81 // when we (hopefully) have a one-for-all paste mechanism.
  82 bool dirty_tabular_stack_;
  83
  84 class resetParagraph : public std::unary_function<Paragraph, Buffer const &> {
  85 public:
  86         resetParagraph(Buffer const & b) : buffer_(b) {}
  87         void operator()(Paragraph & p) const {
  88                 p.cleanChanges();
  89                 // ERT paragraphs have the Language latex_language.
  90                 // This is invalid outside of ERT, so we need to change it
  91                 // to the buffer language.
  92                 if (p.ownerCode() == InsetBase::ERT_CODE) {
  93                         p.changeLanguage(buffer_.params(), latex_language,
  94                                          buffer_.getLanguage());
  95                 }
  96                 p.setInsetOwner(0);
  97         }
  98 private:
  99         Buffer const & buffer_;
 100 };
 101
 102
 103 void region(CursorSlice const & i1, CursorSlice const & i2,
 104         InsetBase::row_type & r1, InsetBase::row_type & r2,
 105         InsetBase::col_type & c1, InsetBase::col_type & c2)
 106 {
 107         InsetBase & p = i1.inset();
 108         c1 = p.col(i1.idx());
 109         c2 = p.col(i2.idx());
 110         if (c1 > c2)
 111                 std::swap(c1, c2);
 112         r1 = p.row(i1.idx());
 113         r2 = p.row(i2.idx());
 114         if (r1 > r2)
 115                 std::swap(r1, r2);
 116 }
 117
 118
 119 bool checkPastePossible(int index)
 120 {
 121         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 122 }
 123
 124
 125 pair<PitPosPair, pit_type>
 126 pasteSelectionHelper(Buffer const & buffer,
 127                      ParagraphList & pars, pit_type pit, int pos,
 128                      ParagraphList const & parlist, textclass_type textclass,
 129                      ErrorList & errorlist)
 130 {
 131         if (parlist.empty())
 132                 return make_pair(PitPosPair(pit, pos), pit);
 133
 134         BOOST_ASSERT (pos <= pars[pit].size());
 135
 136         // Make a copy of the CaP paragraphs.
 137         ParagraphList insertion = parlist;
 138         textclass_type const tc = buffer.params().textclass;
 139
 140         // Now remove all out of the pars which is NOT allowed in the
 141         // new environment and set also another font if that is required.
 142
 143         // Convert newline to paragraph break in ERT inset.
 144         // This should not be here!
 145         if (pars[pit].inInset() &&
 146             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 147                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 148                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 149                                 if (insertion[i].isNewline(j)) {
 150                                         insertion[i].erase(j);
 151                                         breakParagraphConservative(
 152                                                         buffer.params(),
 153                                                         insertion, i, j);
 154                                 }
 155                         }
 156                 }
 157         }
 158
 159         // Make sure there is no class difference.
 160         InsetText in;
 161         // This works without copying any paragraph data because we have
 162         // a specialized swap method for ParagraphList. This is important
 163         // since we store pointers to insets at some places and we don't
 164         // want to invalidate them.
 165         insertion.swap(in.paragraphs());
 166         lyx::cap::switchBetweenClasses(textclass, tc, in, errorlist);
 167         insertion.swap(in.paragraphs());
 168
 169         ParagraphList::iterator tmpbuf = insertion.begin();
 170         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 171
 172         Paragraph::depth_type max_depth = pars[pit].getMaxDepthAfter();
 173
 174         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 175                 // If we have a negative jump so that the depth would
 176                 // go below 0 depth then we have to redo the delta to
 177                 // this new max depth level so that subsequent
 178                 // paragraphs are aligned correctly to this paragraph
 179                 // at level 0.
 180                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 181                         depth_delta = 0;
 182
 183                 // Set the right depth so that we are not too deep or shallow.
 184                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 185                 if (tmpbuf->params().depth() > max_depth)
 186                         tmpbuf->params().depth(max_depth);
 187
 188                 // Only set this from the 2nd on as the 2nd depends
 189                 // for maxDepth still on pit.
 190                 if (tmpbuf != insertion.begin())
 191                         max_depth = tmpbuf->getMaxDepthAfter();
 192
 193                 // Set the inset owner of this paragraph.
 194                 tmpbuf->setInsetOwner(pars[pit].inInset());
 195                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 196                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 197                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 198                                 tmpbuf->erase(i--);
 199                 }
 200
 201                 // reset change tracking status
 202                 if (buffer.params().tracking_changes)
 203                         tmpbuf->cleanChanges(Paragraph::trackingOn);
 204                 else
 205                         tmpbuf->cleanChanges(Paragraph::trackingOff);
 206         }
 207
 208         bool const empty = pars[pit].empty();
 209         if (!empty) {
 210                 // Make the buf exactly the same layout as the cursor
 211                 // paragraph.
 212                 insertion.begin()->makeSameLayout(pars[pit]);
 213         }
 214
 215         // Prepare the paragraphs and insets for insertion.
 216         // A couple of insets store buffer references so need updating.
 217         insertion.swap(in.paragraphs());
 218
 219         ParIterator fpit = par_iterator_begin(in);
 220         ParIterator fend = par_iterator_end(in);
 221
 222         for (; fpit != fend; ++fpit) {
 223                 InsetList::iterator lit = fpit->insetlist.begin();
 224                 InsetList::iterator eit = fpit->insetlist.end();
 225
 226                 for (; lit != eit; ++lit) {
 227                         switch (lit->inset->lyxCode()) {
 228                         case InsetBase::TABULAR_CODE: {
 229                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 230                                 it->buffer(&buffer);
 231                                 break;
 232                         }
 233
 234                         default:
 235                                 break; // nothing
 236                         }
 237                 }
 238         }
 239         insertion.swap(in.paragraphs());
 240
 241         // Split the paragraph for inserting the buf if necessary.
 242         if (!empty)
 243                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 244
 245         // Paste it!
 246         if (empty) {
 247                 pars.insert(boost::next(pars.begin(), pit),
 248                             insertion.begin(),
 249                             insertion.end());
 250
 251                 // merge the empty par with the last par of the insertion
 252                 mergeParagraph(buffer.params(), pars,
 253                                pit + insertion.size() - 1);
 254         } else {
 255                 pars.insert(boost::next(pars.begin(), pit + 1),
 256                             insertion.begin(),
 257                             insertion.end());
 258
 259                 // merge the first par of the insertion with the current par
 260                 mergeParagraph(buffer.params(), pars, pit);
 261         }
 262
 263         pit_type last_paste = pit + insertion.size() - 1;
 264
 265         // Store the new cursor position.
 266         pit = last_paste;
 267         pos = pars[last_paste].size();
 268
 269         // Join (conditionally) last pasted paragraph with next one, i.e.,
 270         // the tail of the spliced document paragraph
 271         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 272                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 273                         mergeParagraph(buffer.params(), pars, last_paste);
 274                 } else if (pars[last_paste + 1].empty()) {
 275                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 276                         mergeParagraph(buffer.params(), pars, last_paste);
 277                 } else if (pars[last_paste].empty()) {
 278                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 279                         mergeParagraph(buffer.params(), pars, last_paste);
 280                 } else {
 281                         pars[last_paste + 1].stripLeadingSpaces();
 282                         ++last_paste;
 283                 }
 284         }
 285
 286         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 287 }
 288
 289
 290 PitPosPair eraseSelectionHelper(BufferParams const & params,
 291         ParagraphList & pars,
 292         pit_type startpit, pit_type endpit,
 293         int startpos, int endpos, bool doclear)
 294 {
 295         // Start of selection is really invalid.
 296         if (startpit == pit_type(pars.size()) ||
 297             (startpos > pars[startpit].size()))
 298                 return PitPosPair(endpit, endpos);
 299
 300         // Start and end is inside same paragraph
 301         if (endpit == pit_type(pars.size()) ||
 302             startpit == endpit) {
 303                 endpos -= pars[startpit].erase(startpos, endpos);
 304                 return PitPosPair(endpit, endpos);
 305         }
 306
 307         // A paragraph break has to be physically removed by merging, but
 308         // only if either (1) change tracking is off, or (2) the para break
 309         // is "blue"
 310         for (pit_type pit = startpit; pit != endpit + 1;) {
 311                 bool const merge = !params.tracking_changes ||
 312                         pars[pit].lookupChange(pars[pit].size()) ==
 313                         Change::INSERTED;
 314                 pos_type const left  = ( pit == startpit ? startpos : 0 );
 315                 pos_type const right = ( pit == endpit ? endpos :
 316                                 pars[pit].size() + 1 );
 317                 // Logical erase only:
 318                 pars[pit].erase(left, right);
 319                 // Separate handling of para break:
 320                 if (merge && pit != endpit &&
 321                    (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 322                         pos_type const thissize = pars[pit].size();
 323                         if (doclear)
 324                                 pars[pit + 1].stripLeadingSpaces();
 325                         mergeParagraph(params, pars, pit);
 326                         --endpit;
 327                         if (pit == endpit)
 328                                 endpos += thissize;
 329                 } else
 330                         ++pit;
 331         }
 332
 333         // Ensure legal cursor pos:
 334         endpit = startpit;
 335         endpos = startpos;
 336         return PitPosPair(endpit, endpos);
 337 }
 338
 339
 340 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 341         pit_type startpit, pit_type endpit,
 342         int start, int end, textclass_type tc)
 343 {
 344         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 345         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 346         BOOST_ASSERT(startpit != endpit || start <= end);
 347
 348         // Clone the paragraphs within the selection.
 349         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 350                                  boost::next(pars.begin(), endpit + 1));
 351
 352         for_each(paragraphs.begin(), paragraphs.end(), resetParagraph(buf));
 353
 354         // Cut out the end of the last paragraph.
 355         Paragraph & back = paragraphs.back();
 356         back.erase(end, back.size());
 357
 358         // Cut out the begin of the first paragraph
 359         Paragraph & front = paragraphs.front();
 360         front.erase(0, start);
 361
 362         theCuts.push(make_pair(paragraphs, tc));
 363 }
 364
 365 } // namespace anon
 366
 367
 368
 369
 370 namespace lyx {
 371 namespace cap {
 372
 373 string grabAndEraseSelection(LCursor & cur)
 374 {
 375         if (!cur.selection())
 376                 return string();
 377         string res = grabSelection(cur);
 378         eraseSelection(cur);
 379         return res;
 380 }
 381
 382
 383 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 384         InsetText & in, ErrorList & errorlist)
 385 {
 386         BOOST_ASSERT(!in.paragraphs().empty());
 387         if (c1 == c2)
 388                 return;
 389
 390         LyXTextClass const & tclass1 = textclasslist[c1];
 391         LyXTextClass const & tclass2 = textclasslist[c2];
 392
 393         // layouts
 394         ParIterator end = par_iterator_end(in);
 395         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 396                 string const name = it->layout()->name();
 397                 bool hasLayout = tclass2.hasLayout(name);
 398
 399                 if (hasLayout)
 400                         it->layout(tclass2[name]);
 401                 else
 402                         it->layout(tclass2.defaultLayout());
 403
 404                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 405                         docstring const s = bformat(
 406                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 407                                                 "because of class conversion from\n%3$s to %4$s"),
 408                          lyx::from_utf8(name), lyx::from_utf8(it->layout()->name()),
 409                          lyx::from_utf8(tclass1.name()), lyx::from_utf8(tclass2.name()));
 410                         // To warn the user that something had to be done.
 411                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 412                                                       it->id(), 0,
 413                                                       it->size()));
 414                 }
 415         }
 416
 417         // character styles
 418         InsetIterator const i_end = inset_iterator_end(in);
 419         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 420                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 421                         InsetCharStyle & inset =
 422                                 static_cast<InsetCharStyle &>(*it);
 423                         string const name = inset.params().type;
 424                         CharStyles::iterator const found_cs =
 425                                 tclass2.charstyle(name);
 426                         if (found_cs == tclass2.charstyles().end()) {
 427                                 // The character style is undefined in tclass2
 428                                 inset.setUndefined();
 429                                 docstring const s = bformat(_(
 430                                         "Character style %1$s is "
 431                                         "undefined because of class "
 432                                         "conversion from\n%2$s to %3$s"),
 433                                          lyx::from_utf8(name), lyx::from_utf8(tclass1.name()),
 434                                          lyx::from_utf8(tclass2.name()));
 435                                 // To warn the user that something had to be done.
 436                                 errorlist.push_back(ErrorItem(
 437                                         _("Undefined character style"),
 438                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 439                         } else if (inset.undefined()) {
 440                                 // The character style is undefined in
 441                                 // tclass1 and is defined in tclass2
 442                                 inset.setDefined(found_cs);
 443                         }
 444                 }
 445         }
 446 }
 447
 448
 449 std::vector<string> const availableSelections(Buffer const & buffer)
 450 {
 451         vector<string> selList;
 452
 453         CutStack::const_iterator cit = theCuts.begin();
 454         CutStack::const_iterator end = theCuts.end();
 455         for (; cit != end; ++cit) {
 456                 // we do not use cit-> here because gcc 2.9x does not
 457                 // like it (JMarc)
 458                 ParagraphList const & pars = (*cit).first;
 459                 string asciiSel;
 460                 ParagraphList::const_iterator pit = pars.begin();
 461                 ParagraphList::const_iterator pend = pars.end();
 462                 for (; pit != pend; ++pit) {
 463                         asciiSel += pit->asString(buffer, false);
 464                         if (asciiSel.size() > 25) {
 465                                 asciiSel.replace(22, string::npos, "...");
 466                                 break;
 467                         }
 468                 }
 469
 470                 selList.push_back(asciiSel);
 471         }
 472
 473         return selList;
 474 }
 475
 476
 477 lyx::size_type numberOfSelections()
 478 {
 479         return theCuts.size();
 480 }
 481
 482
 483 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 484 {
 485         // This doesn't make sense, if there is no selection
 486         if (!cur.selection())
 487                 return;
 488
 489         // OK, we have a selection. This is always between cur.selBegin()
 490         // and cur.selEnd()
 491
 492         if (cur.inTexted()) {
 493                 LyXText * text = cur.text();
 494                 BOOST_ASSERT(text);
 495                 // Stuff what we got on the clipboard. Even if there is no selection.
 496
 497                 // There is a problem with having the stuffing here in that the
 498                 // larger the selection the slower LyX will get. This can be
 499                 // solved by running the line below only when the selection has
 500                 // finished. The solution used currently just works, to make it
 501                 // faster we need to be more clever and probably also have more
 502                 // calls to cur.bv().owner()->gui().selection().put. (Lgb)
 503 //              cur.bv().owner()->gui().selection().put(cur.selectionAsString(true));
 504
 505
 506                 // make sure that the depth behind the selection are restored, too
 507                 recordUndoSelection(cur);
 508                 pit_type begpit = cur.selBegin().pit();
 509                 pit_type endpit = cur.selEnd().pit();
 510
 511                 int endpos = cur.selEnd().pos();
 512
 513                 BufferParams const & bp = cur.buffer().params();
 514                 if (realcut) {
 515                         copySelectionHelper(cur.buffer(),
 516                                 text->paragraphs(),
 517                                 begpit, endpit,
 518                                 cur.selBegin().pos(), endpos,
 519                                 bp.textclass);
 520                 }
 521
 522                 boost::tie(endpit, endpos) =
 523                         eraseSelectionHelper(bp,
 524                                 text->paragraphs(),
 525                                 begpit, endpit,
 526                                 cur.selBegin().pos(), endpos,
 527                                 doclear);
 528
 529                 // sometimes necessary
 530                 if (doclear)
 531                         text->paragraphs()[begpit].stripLeadingSpaces();
 532
 533                 // cutSelection can invalidate the cursor so we need to set
 534                 // it anew. (Lgb)
 535                 // we prefer the end for when tracking changes
 536                 cur.pos() = endpos;
 537                 cur.pit() = endpit;
 538
 539                 // need a valid cursor. (Lgb)
 540                 cur.clearSelection();
 541                 updateLabels(cur.buffer());
 542
 543                 // tell tabular that a recent copy happened
 544                 dirtyTabularStack(false);
 545         }
 546
 547         if (cur.inMathed()) {
 548                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 549                         // The current selection spans more than one cell.
 550                         // Record all cells
 551                         recordUndoInset(cur);
 552                 } else {
 553                         // Record only the current cell to avoid a jumping
 554                         // cursor after undo
 555                         recordUndo(cur);
 556                 }
 557                 if (realcut)
 558                         copySelection(cur);
 559                 eraseSelection(cur);
 560         }
 561 }
 562
 563
 564 void copySelection(LCursor & cur)
 565 {
 566         // stuff the selection onto the X clipboard, from an explicit copy request
 567         cur.bv().owner()->gui().clipboard().put(cur.selectionAsString(true));
 568
 569         // this doesn't make sense, if there is no selection
 570         if (!cur.selection())
 571                 return;
 572
 573         if (cur.inTexted()) {
 574                 LyXText * text = cur.text();
 575                 BOOST_ASSERT(text);
 576                 // ok we have a selection. This is always between cur.selBegin()
 577                 // and sel_end cursor
 578
 579                 // copy behind a space if there is one
 580                 ParagraphList & pars = text->paragraphs();
 581                 pos_type pos = cur.selBegin().pos();
 582                 pit_type par = cur.selBegin().pit();
 583                 while (pos < pars[par].size()
 584                                          && pars[par].isLineSeparator(pos)
 585                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 586                         ++pos;
 587
 588                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 589                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 590         }
 591
 592         if (cur.inMathed()) {
 593                 //lyxerr << "copySelection in mathed" << endl;
 594                 ParagraphList pars;
 595                 pars.push_back(Paragraph());
 596                 BufferParams const & bp = cur.buffer().params();
 597                 pars.back().layout(bp.getLyXTextClass().defaultLayout());
 598                 for_each(pars.begin(), pars.end(), resetParagraph(cur.buffer()));
 599                 pars.back().insert(0, grabSelection(cur), LyXFont());
 600                 theCuts.push(make_pair(pars, bp.textclass));
 601         }
 602         // tell tabular that a recent copy happened
 603         dirtyTabularStack(false);
 604 }
 605
 606
 607 std::string getSelection(Buffer const & buf, size_t sel_index)
 608 {
 609         return sel_index < theCuts.size()
 610                 ? theCuts[sel_index].first.back().asString(buf, false)
 611                 : string();
 612 }
 613
 614
 615 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 616                         textclass_type textclass, ErrorList & errorList)
 617 {
 618         if (cur.inTexted()) {
 619                 LyXText * text = cur.text();
 620                 BOOST_ASSERT(text);
 621
 622                 recordUndo(cur);
 623
 624                 pit_type endpit;
 625                 PitPosPair ppp;
 626
 627                 boost::tie(ppp, endpit) =
 628                         pasteSelectionHelper(cur.buffer(),
 629                                              text->paragraphs(),
 630                                              cur.pit(), cur.pos(),
 631                                              parlist, textclass,
 632                                              errorList);
 633                 updateLabels(cur.buffer());
 634                 cur.clearSelection();
 635                 text->setCursor(cur, ppp.first, ppp.second);
 636         }
 637
 638         // mathed is handled in InsetMathNest/InsetMathGrid
 639         BOOST_ASSERT(!cur.inMathed());
 640 }
 641
 642
 643 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 644 {
 645         // this does not make sense, if there is nothing to paste
 646         if (!checkPastePossible(sel_index))
 647                 return;
 648
 649         pasteParagraphList(cur, theCuts[sel_index].first,
 650                            theCuts[sel_index].second, errorList);
 651         cur.setSelection();
 652 }
 653
 654
 655 // simple replacing. The font of the first selected character is used
 656 void replaceSelectionWithString(LCursor & cur, string const & str, bool backwards)
 657 {
 658         recordUndo(cur);
 659         DocIterator selbeg = cur.selectionBegin();
 660
 661         // Get font setting before we cut
 662         LyXFont const font =
 663                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 664
 665         // Insert the new string
 666         pos_type pos = cur.selEnd().pos();
 667         Paragraph & par = cur.selEnd().paragraph();
 668         string::const_iterator cit = str.begin();
 669         string::const_iterator end = str.end();
 670         for (; cit != end; ++cit, ++pos)
 671                 par.insertChar(pos, (*cit), font);
 672
 673         // Cut the selection
 674         cutSelection(cur, true, false);
 675
 676         // select the replacement
 677         if (backwards) {
 678                 selbeg.pos() += str.length();
 679                 cur.setSelection(selbeg, -str.length());
 680         } else
 681                 cur.setSelection(selbeg, str.length());
 682 }
 683
 684
 685 void replaceSelection(LCursor & cur)
 686 {
 687         if (cur.selection())
 688                 cutSelection(cur, true, false);
 689 }
 690
 691
 692 void eraseSelection(LCursor & cur)
 693 {
 694         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 695         CursorSlice const & i1 = cur.selBegin();
 696         CursorSlice const & i2 = cur.selEnd();
 697         if (i1.inset().asInsetMath()) {
 698                 cur.top() = i1;
 699                 if (i1.idx() == i2.idx()) {
 700                         i1.cell().erase(i1.pos(), i2.pos());
 701                         // We may have deleted i1.cell(cur.pos()).
 702                         // Make sure that pos is valid.
 703                         if (cur.pos() > cur.lastpos())
 704                                 cur.pos() = cur.lastpos();
 705                 } else {
 706                         InsetMath * p = i1.asInsetMath();
 707                         InsetBase::row_type r1, r2;
 708                         InsetBase::col_type c1, c2;
 709                         region(i1, i2, r1, r2, c1, c2);
 710                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 711                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 712                                         p->cell(p->index(row, col)).clear();
 713                         // We've deleted the whole cell. Only pos 0 is valid.
 714                         cur.pos() = 0;
 715                 }
 716                 // need a valid cursor. (Lgb)
 717                 cur.clearSelection();
 718         } else {
 719                 lyxerr << "can't erase this selection 1" << endl;
 720         }
 721         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 722 }
 723
 724
 725 void selDel(LCursor & cur)
 726 {
 727         //lyxerr << "LCursor::selDel" << endl;
 728         if (cur.selection())
 729                 eraseSelection(cur);
 730 }
 731
 732
 733 void selClearOrDel(LCursor & cur)
 734 {
 735         //lyxerr << "LCursor::selClearOrDel" << endl;
 736         if (lyxrc.auto_region_delete)
 737                 selDel(cur);
 738         else
 739                 cur.selection() = false;
 740 }
 741
 742
 743 string grabSelection(LCursor const & cur)
 744 {
 745         if (!cur.selection())
 746                 return string();
 747
 748         // FIXME: What is wrong with the following?
 749 #if 0
 750         std::ostringstream os;
 751         for (DocIterator dit = cur.selectionBegin();
 752              dit != cur.selectionEnd(); dit.forwardPos())
 753                 os << asString(dit.cell());
 754         return os.str();
 755 #endif
 756
 757         CursorSlice i1 = cur.selBegin();
 758         CursorSlice i2 = cur.selEnd();
 759
 760         if (i1.idx() == i2.idx()) {
 761                 if (i1.inset().asInsetMath()) {
 762                         MathArray::const_iterator it = i1.cell().begin();
 763                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 764                 } else {
 765                         return "unknown selection 1";
 766                 }
 767         }
 768
 769         InsetBase::row_type r1, r2;
 770         InsetBase::col_type c1, c2;
 771         region(i1, i2, r1, r2, c1, c2);
 772
 773         string data;
 774         if (i1.inset().asInsetMath()) {
 775                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 776                         if (row > r1)
 777                                 data += "\\\\";
 778                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 779                                 if (col > c1)
 780                                         data += '&';
 781                                 data += asString(i1.asInsetMath()->
 782                                         cell(i1.asInsetMath()->index(row, col)));
 783                         }
 784                 }
 785         } else {
 786                 data = "unknown selection 2";
 787         }
 788         return data;
 789 }
 790
 791
 792 void dirtyTabularStack(bool b)
 793 {
 794         dirty_tabular_stack_ = b;
 795 }
 796
 797
 798 bool tabularStackDirty()
 799 {
 800         return dirty_tabular_stack_;
 801 }
 802
 803
 804 } // namespace cap
 805 } // namespace lyx