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  * \author Michael Gerz
  10  *
  11  * Full author contact details are available in file CREDITS.
  12  */
  13
  14 #include <config.h>
  15
  16 #include "CutAndPaste.h"
  17
  18 #include "buffer.h"
  19 #include "buffer_funcs.h"
  20 #include "bufferparams.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/Clipboard.h"
  49
  50 #include <boost/tuple/tuple.hpp>
  51
  52
  53 namespace lyx {
  54
  55 using support::bformat;
  56 using frontend::Clipboard;
  57
  58 using std::endl;
  59 using std::for_each;
  60 using std::make_pair;
  61 using std::pair;
  62 using std::vector;
  63 using std::string;
  64
  65
  66 namespace {
  67
  68 typedef std::pair<pit_type, int> PitPosPair;
  69
  70 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  71
  72 CutStack theCuts(10);
  73
  74 // store whether the tabular stack is newer than the normal copy stack
  75 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  76 // when we (hopefully) have a one-for-all paste mechanism.
  77 bool dirty_tabular_stack_;
  78
  79
  80 void region(CursorSlice const & i1, CursorSlice const & i2,
  81         InsetBase::row_type & r1, InsetBase::row_type & r2,
  82         InsetBase::col_type & c1, InsetBase::col_type & c2)
  83 {
  84         InsetBase & p = i1.inset();
  85         c1 = p.col(i1.idx());
  86         c2 = p.col(i2.idx());
  87         if (c1 > c2)
  88                 std::swap(c1, c2);
  89         r1 = p.row(i1.idx());
  90         r2 = p.row(i2.idx());
  91         if (r1 > r2)
  92                 std::swap(r1, r2);
  93 }
  94
  95
  96 bool checkPastePossible(int index)
  97 {
  98         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
  99 }
 100
 101
 102 pair<PitPosPair, pit_type>
 103 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 104                      textclass_type textclass, ErrorList & errorlist)
 105 {
 106         Buffer const & buffer = cur.buffer();
 107         pit_type pit = cur.pit();
 108         pos_type pos = cur.pos();
 109         ParagraphList & pars = cur.text()->paragraphs();
 110
 111         if (parlist.empty())
 112                 return make_pair(PitPosPair(pit, pos), pit);
 113
 114         BOOST_ASSERT (pos <= pars[pit].size());
 115
 116         // Make a copy of the CaP paragraphs.
 117         ParagraphList insertion = parlist;
 118         textclass_type const tc = buffer.params().textclass;
 119
 120         // Now remove all out of the pars which is NOT allowed in the
 121         // new environment and set also another font if that is required.
 122
 123         // Convert newline to paragraph break in ERT inset.
 124         // This should not be here!
 125         if (pars[pit].inInset() &&
 126             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 127                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 128                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 129                                 if (insertion[i].isNewline(j)) {
 130                                         // do not track deletion of newline
 131                                         insertion[i].eraseChar(j, false);
 132                                         breakParagraphConservative(
 133                                                         buffer.params(),
 134                                                         insertion, i, j);
 135                                 }
 136                         }
 137                 }
 138         }
 139
 140         // If we are in an inset which returns forceDefaultParagraphs,
 141         // set the paragraphs to default
 142         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 143                 LyXLayout_ptr const layout =
 144                         buffer.params().getLyXTextClass().defaultLayout();
 145                 ParagraphList::iterator const end = insertion.end();
 146                 for (ParagraphList::iterator par = insertion.begin();
 147                                 par != end; ++par)
 148                         par->layout(layout);
 149         }
 150
 151         // Make sure there is no class difference.
 152         InsetText in;
 153         // This works without copying any paragraph data because we have
 154         // a specialized swap method for ParagraphList. This is important
 155         // since we store pointers to insets at some places and we don't
 156         // want to invalidate them.
 157         insertion.swap(in.paragraphs());
 158         cap::switchBetweenClasses(textclass, tc, in, errorlist);
 159         insertion.swap(in.paragraphs());
 160
 161         ParagraphList::iterator tmpbuf = insertion.begin();
 162         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 163
 164         depth_type max_depth = pars[pit].getMaxDepthAfter();
 165
 166         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 167                 // If we have a negative jump so that the depth would
 168                 // go below 0 depth then we have to redo the delta to
 169                 // this new max depth level so that subsequent
 170                 // paragraphs are aligned correctly to this paragraph
 171                 // at level 0.
 172                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 173                         depth_delta = 0;
 174
 175                 // Set the right depth so that we are not too deep or shallow.
 176                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 177                 if (tmpbuf->params().depth() > max_depth)
 178                         tmpbuf->params().depth(max_depth);
 179
 180                 // Only set this from the 2nd on as the 2nd depends
 181                 // for maxDepth still on pit.
 182                 if (tmpbuf != insertion.begin())
 183                         max_depth = tmpbuf->getMaxDepthAfter();
 184
 185                 // Set the inset owner of this paragraph.
 186                 tmpbuf->setInsetOwner(pars[pit].inInset());
 187                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 188                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 189                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 190                                 // do not track deletion of invalid insets
 191                                 tmpbuf->eraseChar(i--, false);
 192                 }
 193
 194                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 195                                          Change::INSERTED : Change::UNCHANGED));
 196         }
 197
 198         bool const empty = pars[pit].empty();
 199         if (!empty) {
 200                 // Make the buf exactly the same layout as the cursor
 201                 // paragraph.
 202                 insertion.begin()->makeSameLayout(pars[pit]);
 203         }
 204
 205         // Prepare the paragraphs and insets for insertion.
 206         // A couple of insets store buffer references so need updating.
 207         insertion.swap(in.paragraphs());
 208
 209         ParIterator fpit = par_iterator_begin(in);
 210         ParIterator fend = par_iterator_end(in);
 211
 212         for (; fpit != fend; ++fpit) {
 213                 InsetList::iterator lit = fpit->insetlist.begin();
 214                 InsetList::iterator eit = fpit->insetlist.end();
 215
 216                 for (; lit != eit; ++lit) {
 217                         switch (lit->inset->lyxCode()) {
 218                         case InsetBase::TABULAR_CODE: {
 219                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 220                                 it->buffer(&buffer);
 221                                 break;
 222                         }
 223
 224                         default:
 225                                 break; // nothing
 226                         }
 227                 }
 228         }
 229         insertion.swap(in.paragraphs());
 230
 231         // Split the paragraph for inserting the buf if necessary.
 232         if (!empty)
 233                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 234
 235         // Paste it!
 236         if (empty) {
 237                 pars.insert(boost::next(pars.begin(), pit),
 238                             insertion.begin(),
 239                             insertion.end());
 240
 241                 // merge the empty par with the last par of the insertion
 242                 mergeParagraph(buffer.params(), pars,
 243                                pit + insertion.size() - 1);
 244         } else {
 245                 pars.insert(boost::next(pars.begin(), pit + 1),
 246                             insertion.begin(),
 247                             insertion.end());
 248
 249                 // merge the first par of the insertion with the current par
 250                 mergeParagraph(buffer.params(), pars, pit);
 251         }
 252
 253         pit_type last_paste = pit + insertion.size() - 1;
 254
 255         // Store the new cursor position.
 256         pit = last_paste;
 257         pos = pars[last_paste].size();
 258
 259         // Join (conditionally) last pasted paragraph with next one, i.e.,
 260         // the tail of the spliced document paragraph
 261         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 262                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 263                         mergeParagraph(buffer.params(), pars, last_paste);
 264                 } else if (pars[last_paste + 1].empty()) {
 265                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 266                         mergeParagraph(buffer.params(), pars, last_paste);
 267                 } else if (pars[last_paste].empty()) {
 268                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 269                         mergeParagraph(buffer.params(), pars, last_paste);
 270                 } else {
 271                         pars[last_paste + 1].stripLeadingSpaces();
 272                         ++last_paste;
 273                 }
 274         }
 275
 276         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 277 }
 278
 279
 280 PitPosPair eraseSelectionHelper(BufferParams const & params,
 281         ParagraphList & pars,
 282         pit_type startpit, pit_type endpit,
 283         int startpos, int endpos, bool doclear)
 284 {
 285         // Start of selection is really invalid.
 286         if (startpit == pit_type(pars.size()) ||
 287             (startpos > pars[startpit].size()))
 288                 return PitPosPair(endpit, endpos);
 289
 290         // Start and end is inside same paragraph
 291         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 292                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 293                 return PitPosPair(endpit, endpos);
 294         }
 295
 296         for (pit_type pit = startpit; pit != endpit + 1;) {
 297                 pos_type const left  = (pit == startpit ? startpos : 0);
 298                 pos_type const right = (pit == endpit ? endpos : pars[pit].size() + 1);
 299
 300                 // Logically erase only, including the end-of-paragraph character
 301                 pars[pit].eraseChars(left, right, params.trackChanges);
 302
 303                 // A paragraph break has to be physically removed by merging only
 304                 // if either (1) change tracking is off, or (2) the imaginary
 305                 // end-of-paragraph character is marked as inserted even after
 306                 // the erase operation (please see Paragraph::Pimpl::eraseChar(...)
 307                 // for details on end-of-par handling)
 308
 309                 bool const merge = !params.trackChanges ||
 310                                    pars[pit].isInserted(pars[pit].size());
 311
 312                 // Separate handling of paragraph break:
 313                 if (merge && pit != endpit &&
 314                     (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 315                         pos_type const thissize = pars[pit].size();
 316                         if (doclear)
 317                                 pars[pit + 1].stripLeadingSpaces();
 318                         mergeParagraph(params, pars, pit);
 319                         --endpit;
 320                         if (pit == endpit)
 321                                 endpos += thissize;
 322                 } else
 323                         ++pit;
 324         }
 325
 326         // Ensure legal cursor pos:
 327         endpit = startpit;
 328         endpos = startpos;
 329         return PitPosPair(endpit, endpos);
 330 }
 331
 332
 333 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 334         pit_type startpit, pit_type endpit,
 335         int start, int end, textclass_type tc)
 336 {
 337         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 338         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 339         BOOST_ASSERT(startpit != endpit || start <= end);
 340
 341         // Clone the paragraphs within the selection.
 342         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 343                                  boost::next(pars.begin(), endpit + 1));
 344
 345         ParagraphList::iterator it = paragraphs.begin();
 346         ParagraphList::iterator it_end = paragraphs.end();
 347
 348         for (; it != it_end; it++) {
 349                 // ERT paragraphs have the Language latex_language.
 350                 // This is invalid outside of ERT, so we need to change it
 351                 // to the buffer language.
 352                 if (it->ownerCode() == InsetBase::ERT_CODE) {
 353                         it->changeLanguage(buf.params(), latex_language,
 354                                            buf.getLanguage());
 355                 }
 356                 it->setInsetOwner(0);
 357         }
 358
 359         // Cut out the end of the last paragraph.
 360         Paragraph & back = paragraphs.back();
 361         // do not track deletion here; it is an internal action not visible to the user
 362         back.eraseChars(end, back.size(), false);
 363
 364         // Cut out the begin of the first paragraph
 365         Paragraph & front = paragraphs.front();
 366         // again, do not track deletion
 367         front.eraseChars(0, start, false);
 368
 369         theCuts.push(make_pair(paragraphs, tc));
 370 }
 371
 372 } // namespace anon
 373
 374
 375
 376
 377 namespace cap {
 378
 379 docstring grabAndEraseSelection(LCursor & cur)
 380 {
 381         if (!cur.selection())
 382                 return docstring();
 383         docstring res = grabSelection(cur);
 384         eraseSelection(cur);
 385         return res;
 386 }
 387
 388
 389 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 390         InsetText & in, ErrorList & errorlist)
 391 {
 392         BOOST_ASSERT(!in.paragraphs().empty());
 393         if (c1 == c2)
 394                 return;
 395
 396         LyXTextClass const & tclass1 = textclasslist[c1];
 397         LyXTextClass const & tclass2 = textclasslist[c2];
 398
 399         // layouts
 400         ParIterator end = par_iterator_end(in);
 401         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 402                 string const name = it->layout()->name();
 403                 bool hasLayout = tclass2.hasLayout(name);
 404
 405                 if (hasLayout)
 406                         it->layout(tclass2[name]);
 407                 else
 408                         it->layout(tclass2.defaultLayout());
 409
 410                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 411                         docstring const s = bformat(
 412                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 413                                                 "because of class conversion from\n%3$s to %4$s"),
 414                          from_utf8(name), from_utf8(it->layout()->name()),
 415                          from_utf8(tclass1.name()), from_utf8(tclass2.name()));
 416                         // To warn the user that something had to be done.
 417                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 418                                                       it->id(), 0,
 419                                                       it->size()));
 420                 }
 421         }
 422
 423         // character styles
 424         InsetIterator const i_end = inset_iterator_end(in);
 425         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 426                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 427                         InsetCharStyle & inset =
 428                                 static_cast<InsetCharStyle &>(*it);
 429                         string const name = inset.params().type;
 430                         CharStyles::iterator const found_cs =
 431                                 tclass2.charstyle(name);
 432                         if (found_cs == tclass2.charstyles().end()) {
 433                                 // The character style is undefined in tclass2
 434                                 inset.setUndefined();
 435                                 docstring const s = bformat(_(
 436                                         "Character style %1$s is "
 437                                         "undefined because of class "
 438                                         "conversion from\n%2$s to %3$s"),
 439                                          from_utf8(name), from_utf8(tclass1.name()),
 440                                          from_utf8(tclass2.name()));
 441                                 // To warn the user that something had to be done.
 442                                 errorlist.push_back(ErrorItem(
 443                                         _("Undefined character style"),
 444                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 445                         } else if (inset.undefined()) {
 446                                 // The character style is undefined in
 447                                 // tclass1 and is defined in tclass2
 448                                 inset.setDefined(found_cs);
 449                         }
 450                 }
 451         }
 452 }
 453
 454
 455 std::vector<docstring> const availableSelections(Buffer const & buffer)
 456 {
 457         vector<docstring> selList;
 458
 459         CutStack::const_iterator cit = theCuts.begin();
 460         CutStack::const_iterator end = theCuts.end();
 461         for (; cit != end; ++cit) {
 462                 // we do not use cit-> here because gcc 2.9x does not
 463                 // like it (JMarc)
 464                 ParagraphList const & pars = (*cit).first;
 465                 docstring asciiSel;
 466                 ParagraphList::const_iterator pit = pars.begin();
 467                 ParagraphList::const_iterator pend = pars.end();
 468                 for (; pit != pend; ++pit) {
 469                         asciiSel += pit->asString(buffer, false);
 470                         if (asciiSel.size() > 25) {
 471                                 asciiSel.replace(22, docstring::npos,
 472                                                  from_ascii("..."));
 473                                 break;
 474                         }
 475                 }
 476
 477                 selList.push_back(asciiSel);
 478         }
 479
 480         return selList;
 481 }
 482
 483
 484 size_type numberOfSelections()
 485 {
 486         return theCuts.size();
 487 }
 488
 489
 490 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 491 {
 492         // This doesn't make sense, if there is no selection
 493         if (!cur.selection())
 494                 return;
 495
 496         // OK, we have a selection. This is always between cur.selBegin()
 497         // and cur.selEnd()
 498
 499         if (cur.inTexted()) {
 500                 LyXText * text = cur.text();
 501                 BOOST_ASSERT(text);
 502                 // Stuff what we got on the clipboard. Even if there is no selection.
 503
 504                 // There is a problem with having the stuffing here in that the
 505                 // larger the selection the slower LyX will get. This can be
 506                 // solved by running the line below only when the selection has
 507                 // finished. The solution used currently just works, to make it
 508                 // faster we need to be more clever and probably also have more
 509                 // calls to theSelection().put. (Lgb)
 510 //              theSelection().put(cur.selectionAsString(true));
 511
 512
 513                 // make sure that the depth behind the selection are restored, too
 514                 recordUndoSelection(cur);
 515                 pit_type begpit = cur.selBegin().pit();
 516                 pit_type endpit = cur.selEnd().pit();
 517
 518                 int endpos = cur.selEnd().pos();
 519
 520                 BufferParams const & bp = cur.buffer().params();
 521                 if (realcut) {
 522                         copySelectionHelper(cur.buffer(),
 523                                 text->paragraphs(),
 524                                 begpit, endpit,
 525                                 cur.selBegin().pos(), endpos,
 526                                 bp.textclass);
 527                 }
 528
 529                 boost::tie(endpit, endpos) =
 530                         eraseSelectionHelper(bp,
 531                                 text->paragraphs(),
 532                                 begpit, endpit,
 533                                 cur.selBegin().pos(), endpos,
 534                                 doclear);
 535
 536                 // sometimes necessary
 537                 if (doclear)
 538                         text->paragraphs()[begpit].stripLeadingSpaces();
 539
 540                 // cutSelection can invalidate the cursor so we need to set
 541                 // it anew. (Lgb)
 542                 // we prefer the end for when tracking changes
 543                 cur.pos() = endpos;
 544                 cur.pit() = endpit;
 545
 546                 // need a valid cursor. (Lgb)
 547                 cur.clearSelection();
 548                 updateLabels(cur.buffer());
 549
 550                 // tell tabular that a recent copy happened
 551                 dirtyTabularStack(false);
 552         }
 553
 554         if (cur.inMathed()) {
 555                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 556                         // The current selection spans more than one cell.
 557                         // Record all cells
 558                         recordUndoInset(cur);
 559                 } else {
 560                         // Record only the current cell to avoid a jumping
 561                         // cursor after undo
 562                         recordUndo(cur);
 563                 }
 564                 if (realcut)
 565                         copySelection(cur);
 566                 eraseSelection(cur);
 567         }
 568 }
 569
 570
 571 void copySelection(LCursor & cur)
 572 {
 573         // stuff the selection onto the X clipboard, from an explicit copy request
 574         theClipboard().put(cur.selectionAsString(true));
 575
 576         // this doesn't make sense, if there is no selection
 577         if (!cur.selection())
 578                 return;
 579
 580         if (cur.inTexted()) {
 581                 LyXText * text = cur.text();
 582                 BOOST_ASSERT(text);
 583                 // ok we have a selection. This is always between cur.selBegin()
 584                 // and sel_end cursor
 585
 586                 // copy behind a space if there is one
 587                 ParagraphList & pars = text->paragraphs();
 588                 pos_type pos = cur.selBegin().pos();
 589                 pit_type par = cur.selBegin().pit();
 590                 while (pos < pars[par].size()
 591                                          && pars[par].isLineSeparator(pos)
 592                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 593                         ++pos;
 594
 595                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 596                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 597         }
 598
 599         if (cur.inMathed()) {
 600                 //lyxerr << "copySelection in mathed" << endl;
 601                 ParagraphList pars;
 602                 Paragraph par;
 603                 BufferParams const & bp = cur.buffer().params();
 604                 par.layout(bp.getLyXTextClass().defaultLayout());
 605                 par.insert(0, grabSelection(cur), LyXFont(), Change(Change::UNCHANGED));
 606                 pars.push_back(par);
 607                 theCuts.push(make_pair(pars, bp.textclass));
 608         }
 609         // tell tabular that a recent copy happened
 610         dirtyTabularStack(false);
 611 }
 612
 613
 614 docstring getSelection(Buffer const & buf, size_t sel_index)
 615 {
 616         return sel_index < theCuts.size()
 617                 ? theCuts[sel_index].first.back().asString(buf, false)
 618                 : docstring();
 619 }
 620
 621
 622 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 623                         textclass_type textclass, ErrorList & errorList)
 624 {
 625         if (cur.inTexted()) {
 626                 LyXText * text = cur.text();
 627                 BOOST_ASSERT(text);
 628
 629                 pit_type endpit;
 630                 PitPosPair ppp;
 631
 632                 boost::tie(ppp, endpit) =
 633                         pasteSelectionHelper(cur, parlist,
 634                                              textclass, errorList);
 635                 updateLabels(cur.buffer());
 636                 cur.clearSelection();
 637                 text->setCursor(cur, ppp.first, ppp.second);
 638         }
 639
 640         // mathed is handled in InsetMathNest/InsetMathGrid
 641         BOOST_ASSERT(!cur.inMathed());
 642 }
 643
 644
 645 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 646 {
 647         // this does not make sense, if there is nothing to paste
 648         if (!checkPastePossible(sel_index))
 649                 return;
 650
 651         recordUndo(cur);
 652         pasteParagraphList(cur, theCuts[sel_index].first,
 653                            theCuts[sel_index].second, errorList);
 654         cur.setSelection();
 655 }
 656
 657
 658 // simple replacing. The font of the first selected character is used
 659 void replaceSelectionWithString(LCursor & cur, string const & str, bool backwards)
 660 {
 661         recordUndo(cur);
 662         DocIterator selbeg = cur.selectionBegin();
 663
 664         // Get font setting before we cut
 665         LyXFont const font =
 666                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 667
 668         // Insert the new string
 669         pos_type pos = cur.selEnd().pos();
 670         Paragraph & par = cur.selEnd().paragraph();
 671         string::const_iterator cit = str.begin();
 672         string::const_iterator end = str.end();
 673         for (; cit != end; ++cit, ++pos)
 674                 par.insertChar(pos, (*cit), font, cur.buffer().params().trackChanges);
 675
 676         // Cut the selection
 677         cutSelection(cur, true, false);
 678
 679         // select the replacement
 680         if (backwards) {
 681                 selbeg.pos() += str.length();
 682                 cur.setSelection(selbeg, -int(str.length()));
 683         } else
 684                 cur.setSelection(selbeg, str.length());
 685 }
 686
 687
 688 void replaceSelection(LCursor & cur)
 689 {
 690         if (cur.selection())
 691                 cutSelection(cur, true, false);
 692 }
 693
 694
 695 void eraseSelection(LCursor & cur)
 696 {
 697         //lyxerr << "LCursor::eraseSelection begin: " << cur << endl;
 698         CursorSlice const & i1 = cur.selBegin();
 699         CursorSlice const & i2 = cur.selEnd();
 700         if (i1.inset().asInsetMath()) {
 701                 cur.top() = i1;
 702                 if (i1.idx() == i2.idx()) {
 703                         i1.cell().erase(i1.pos(), i2.pos());
 704                         // We may have deleted i1.cell(cur.pos()).
 705                         // Make sure that pos is valid.
 706                         if (cur.pos() > cur.lastpos())
 707                                 cur.pos() = cur.lastpos();
 708                 } else {
 709                         InsetMath * p = i1.asInsetMath();
 710                         InsetBase::row_type r1, r2;
 711                         InsetBase::col_type c1, c2;
 712                         region(i1, i2, r1, r2, c1, c2);
 713                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 714                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 715                                         p->cell(p->index(row, col)).clear();
 716                         // We've deleted the whole cell. Only pos 0 is valid.
 717                         cur.pos() = 0;
 718                 }
 719                 // need a valid cursor. (Lgb)
 720                 cur.clearSelection();
 721         } else {
 722                 lyxerr << "can't erase this selection 1" << endl;
 723         }
 724         //lyxerr << "LCursor::eraseSelection end: " << cur << endl;
 725 }
 726
 727
 728 void selDel(LCursor & cur)
 729 {
 730         //lyxerr << "LCursor::selDel" << endl;
 731         if (cur.selection())
 732                 eraseSelection(cur);
 733 }
 734
 735
 736 void selClearOrDel(LCursor & cur)
 737 {
 738         //lyxerr << "LCursor::selClearOrDel" << endl;
 739         if (lyxrc.auto_region_delete)
 740                 selDel(cur);
 741         else
 742                 cur.selection() = false;
 743 }
 744
 745
 746 docstring grabSelection(LCursor const & cur)
 747 {
 748         if (!cur.selection())
 749                 return docstring();
 750
 751         // FIXME: What is wrong with the following?
 752 #if 0
 753         std::ostringstream os;
 754         for (DocIterator dit = cur.selectionBegin();
 755              dit != cur.selectionEnd(); dit.forwardPos())
 756                 os << asString(dit.cell());
 757         return os.str();
 758 #endif
 759
 760         CursorSlice i1 = cur.selBegin();
 761         CursorSlice i2 = cur.selEnd();
 762
 763         if (i1.idx() == i2.idx()) {
 764                 if (i1.inset().asInsetMath()) {
 765                         MathArray::const_iterator it = i1.cell().begin();
 766                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 767                 } else {
 768                         return from_ascii("unknown selection 1");
 769                 }
 770         }
 771
 772         InsetBase::row_type r1, r2;
 773         InsetBase::col_type c1, c2;
 774         region(i1, i2, r1, r2, c1, c2);
 775
 776         docstring data;
 777         if (i1.inset().asInsetMath()) {
 778                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 779                         if (row > r1)
 780                                 data += "\\\\";
 781                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 782                                 if (col > c1)
 783                                         data += '&';
 784                                 data += asString(i1.asInsetMath()->
 785                                         cell(i1.asInsetMath()->index(row, col)));
 786                         }
 787                 }
 788         } else {
 789                 data = from_ascii("unknown selection 2");
 790         }
 791         return data;
 792 }
 793
 794
 795 void dirtyTabularStack(bool b)
 796 {
 797         dirty_tabular_stack_ = b;
 798 }
 799
 800
 801 bool tabularStackDirty()
 802 {
 803         return dirty_tabular_stack_;
 804 }
 805
 806
 807 } // namespace cap
 808
 809 } // namespace lyx