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 "lyxfunc.h"
  30 #include "lyxrc.h"
  31 #include "lyxtext.h"
  32 #include "lyxtextclasslist.h"
  33 #include "paragraph.h"
  34 #include "paragraph_funcs.h"
  35 #include "ParagraphParameters.h"
  36 #include "ParagraphList_fwd.h"
  37 #include "pariterator.h"
  38 #include "undo.h"
  39
  40 #include "insets/insetcharstyle.h"
  41 #include "insets/insettabular.h"
  42
  43 #include "mathed/MathData.h"
  44 #include "mathed/InsetMath.h"
  45 #include "mathed/MathSupport.h"
  46
  47 #include "support/lstrings.h"
  48
  49 #include "frontends/Clipboard.h"
  50 #include "frontends/Selection.h"
  51
  52 #include <boost/tuple/tuple.hpp>
  53
  54 #include <string>
  55
  56 using std::endl;
  57 using std::for_each;
  58 using std::make_pair;
  59 using std::pair;
  60 using std::vector;
  61 using std::string;
  62
  63
  64 namespace lyx {
  65
  66 using support::bformat;
  67 using frontend::Clipboard;
  68
  69 namespace {
  70
  71 typedef std::pair<pit_type, int> PitPosPair;
  72
  73 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  74
  75 CutStack theCuts(10);
  76
  77 // store whether the tabular stack is newer than the normal copy stack
  78 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  79 // when we (hopefully) have a one-for-all paste mechanism.
  80 bool dirty_tabular_stack_ = false;
  81
  82
  83 void region(CursorSlice const & i1, CursorSlice const & i2,
  84         InsetBase::row_type & r1, InsetBase::row_type & r2,
  85         InsetBase::col_type & c1, InsetBase::col_type & c2)
  86 {
  87         InsetBase & p = i1.inset();
  88         c1 = p.col(i1.idx());
  89         c2 = p.col(i2.idx());
  90         if (c1 > c2)
  91                 std::swap(c1, c2);
  92         r1 = p.row(i1.idx());
  93         r2 = p.row(i2.idx());
  94         if (r1 > r2)
  95                 std::swap(r1, r2);
  96 }
  97
  98
  99 bool checkPastePossible(int index)
 100 {
 101         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 102 }
 103
 104
 105 pair<PitPosPair, pit_type>
 106 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 107                      textclass_type textclass, ErrorList & errorlist)
 108 {
 109         Buffer const & buffer = cur.buffer();
 110         pit_type pit = cur.pit();
 111         pos_type pos = cur.pos();
 112         ParagraphList & pars = cur.text()->paragraphs();
 113
 114         if (parlist.empty())
 115                 return make_pair(PitPosPair(pit, pos), pit);
 116
 117         BOOST_ASSERT (pos <= pars[pit].size());
 118
 119         // Make a copy of the CaP paragraphs.
 120         ParagraphList insertion = parlist;
 121         textclass_type const tc = buffer.params().textclass;
 122
 123         // Now remove all out of the pars which is NOT allowed in the
 124         // new environment and set also another font if that is required.
 125
 126         // Convert newline to paragraph break in ERT inset.
 127         // This should not be here!
 128         if (pars[pit].inInset() &&
 129             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 130                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 131                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 132                                 if (insertion[i].isNewline(j)) {
 133                                         // do not track deletion of newline
 134                                         insertion[i].eraseChar(j, false);
 135                                         breakParagraphConservative(
 136                                                         buffer.params(),
 137                                                         insertion, i, j);
 138                                 }
 139                         }
 140                 }
 141         }
 142
 143         // If we are in an inset which returns forceDefaultParagraphs,
 144         // set the paragraphs to default
 145         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 146                 LyXLayout_ptr const layout =
 147                         buffer.params().getLyXTextClass().defaultLayout();
 148                 ParagraphList::iterator const end = insertion.end();
 149                 for (ParagraphList::iterator par = insertion.begin();
 150                                 par != end; ++par)
 151                         par->layout(layout);
 152         }
 153
 154         // Make sure there is no class difference.
 155         InsetText in;
 156         // This works without copying any paragraph data because we have
 157         // a specialized swap method for ParagraphList. This is important
 158         // since we store pointers to insets at some places and we don't
 159         // want to invalidate them.
 160         insertion.swap(in.paragraphs());
 161         cap::switchBetweenClasses(textclass, tc, in, errorlist);
 162         insertion.swap(in.paragraphs());
 163
 164         ParagraphList::iterator tmpbuf = insertion.begin();
 165         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 166
 167         depth_type max_depth = pars[pit].getMaxDepthAfter();
 168
 169         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 170                 // If we have a negative jump so that the depth would
 171                 // go below 0 depth then we have to redo the delta to
 172                 // this new max depth level so that subsequent
 173                 // paragraphs are aligned correctly to this paragraph
 174                 // at level 0.
 175                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 176                         depth_delta = 0;
 177
 178                 // Set the right depth so that we are not too deep or shallow.
 179                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 180                 if (tmpbuf->params().depth() > max_depth)
 181                         tmpbuf->params().depth(max_depth);
 182
 183                 // Only set this from the 2nd on as the 2nd depends
 184                 // for maxDepth still on pit.
 185                 if (tmpbuf != insertion.begin())
 186                         max_depth = tmpbuf->getMaxDepthAfter();
 187
 188                 // Set the inset owner of this paragraph.
 189                 tmpbuf->setInsetOwner(pars[pit].inInset());
 190                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 191                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 192                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 193                                 // do not track deletion of invalid insets
 194                                 tmpbuf->eraseChar(i--, false);
 195                 }
 196
 197                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 198                                          Change::INSERTED : Change::UNCHANGED));
 199         }
 200
 201         bool const empty = pars[pit].empty();
 202         if (!empty) {
 203                 // Make the buf exactly the same layout as the cursor
 204                 // paragraph.
 205                 insertion.begin()->makeSameLayout(pars[pit]);
 206         }
 207
 208         // Prepare the paragraphs and insets for insertion.
 209         // A couple of insets store buffer references so need updating.
 210         insertion.swap(in.paragraphs());
 211
 212         ParIterator fpit = par_iterator_begin(in);
 213         ParIterator fend = par_iterator_end(in);
 214
 215         for (; fpit != fend; ++fpit) {
 216                 InsetList::const_iterator lit = fpit->insetlist.begin();
 217                 InsetList::const_iterator eit = fpit->insetlist.end();
 218
 219                 for (; lit != eit; ++lit) {
 220                         switch (lit->inset->lyxCode()) {
 221                         case InsetBase::TABULAR_CODE: {
 222                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 223                                 it->buffer(&buffer);
 224                                 break;
 225                         }
 226
 227                         default:
 228                                 break; // nothing
 229                         }
 230                 }
 231         }
 232         insertion.swap(in.paragraphs());
 233
 234         // Split the paragraph for inserting the buf if necessary.
 235         if (!empty)
 236                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 237
 238         // Paste it!
 239         if (empty) {
 240                 pars.insert(boost::next(pars.begin(), pit),
 241                             insertion.begin(),
 242                             insertion.end());
 243
 244                 // merge the empty par with the last par of the insertion
 245                 mergeParagraph(buffer.params(), pars,
 246                                pit + insertion.size() - 1);
 247         } else {
 248                 pars.insert(boost::next(pars.begin(), pit + 1),
 249                             insertion.begin(),
 250                             insertion.end());
 251
 252                 // merge the first par of the insertion with the current par
 253                 mergeParagraph(buffer.params(), pars, pit);
 254         }
 255
 256         pit_type last_paste = pit + insertion.size() - 1;
 257
 258         // Store the new cursor position.
 259         pit = last_paste;
 260         pos = pars[last_paste].size();
 261
 262         // Join (conditionally) last pasted paragraph with next one, i.e.,
 263         // the tail of the spliced document paragraph
 264         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 265                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 266                         mergeParagraph(buffer.params(), pars, last_paste);
 267                 } else if (pars[last_paste + 1].empty()) {
 268                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 269                         mergeParagraph(buffer.params(), pars, last_paste);
 270                 } else if (pars[last_paste].empty()) {
 271                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 272                         mergeParagraph(buffer.params(), pars, last_paste);
 273                 } else {
 274                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 275                         ++last_paste;
 276                 }
 277         }
 278
 279         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 280 }
 281
 282
 283 PitPosPair eraseSelectionHelper(BufferParams const & params,
 284         ParagraphList & pars,
 285         pit_type startpit, pit_type endpit,
 286         int startpos, int endpos, bool doclear)
 287 {
 288         // Start of selection is really invalid.
 289         if (startpit == pit_type(pars.size()) ||
 290             (startpos > pars[startpit].size()))
 291                 return PitPosPair(endpit, endpos);
 292
 293         // Start and end is inside same paragraph
 294         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 295                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 296                 return PitPosPair(endpit, endpos);
 297         }
 298
 299         for (pit_type pit = startpit; pit != endpit + 1;) {
 300                 pos_type const left  = (pit == startpit ? startpos : 0);
 301                 pos_type const right = (pit == endpit ? endpos : pars[pit].size() + 1);
 302
 303                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 304
 305                 // Logically erase only, including the end-of-paragraph character
 306                 pars[pit].eraseChars(left, right, params.trackChanges);
 307
 308                 // Separate handling of paragraph break:
 309                 if (merge && pit != endpit &&
 310                     (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 311                         pos_type const thissize = pars[pit].size();
 312                         if (doclear)
 313                                 pars[pit + 1].stripLeadingSpaces(params.trackChanges);
 314                         mergeParagraph(params, pars, pit);
 315                         --endpit;
 316                         if (pit == endpit)
 317                                 endpos += thissize;
 318                 } else
 319                         ++pit;
 320         }
 321
 322         // Ensure legal cursor pos:
 323         endpit = startpit;
 324         endpos = startpos;
 325         return PitPosPair(endpit, endpos);
 326 }
 327
 328
 329 void putClipboard(ParagraphList const & paragraphs, textclass_type textclass,
 330                   docstring const & plaintext)
 331 {
 332         Buffer buffer(string(), false);
 333         buffer.setUnnamed(true);
 334         buffer.paragraphs() = paragraphs;
 335         buffer.params().textclass = textclass;
 336         std::ostringstream lyx;
 337         if (buffer.write(lyx))
 338                 theClipboard().put(lyx.str(), plaintext);
 339         else
 340                 theClipboard().put(string(), plaintext);
 341 }
 342
 343
 344 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 345         pit_type startpit, pit_type endpit,
 346         int start, int end, textclass_type tc)
 347 {
 348         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 349         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 350         BOOST_ASSERT(startpit != endpit || start <= end);
 351
 352         // Clone the paragraphs within the selection.
 353         ParagraphList paragraphs(boost::next(pars.begin(), startpit),
 354                                  boost::next(pars.begin(), endpit + 1));
 355
 356         ParagraphList::iterator it = paragraphs.begin();
 357         ParagraphList::iterator it_end = paragraphs.end();
 358
 359         for (; it != it_end; it++) {
 360                 // ERT paragraphs have the Language latex_language.
 361                 // This is invalid outside of ERT, so we need to change it
 362                 // to the buffer language.
 363                 if (it->ownerCode() == InsetBase::ERT_CODE) {
 364                         it->changeLanguage(buf.params(), latex_language,
 365                                            buf.getLanguage());
 366                 }
 367                 it->setInsetOwner(0);
 368         }
 369
 370         // Cut out the end of the last paragraph.
 371         Paragraph & back = paragraphs.back();
 372         // do not track deletion here; it is an internal action not visible to the user
 373         back.eraseChars(end, back.size(), false);
 374
 375         // Cut out the begin of the first paragraph
 376         Paragraph & front = paragraphs.front();
 377         // again, do not track deletion
 378         front.eraseChars(0, start, false);
 379
 380         theCuts.push(make_pair(paragraphs, tc));
 381 }
 382
 383 } // namespace anon
 384
 385
 386
 387
 388 namespace cap {
 389
 390 docstring grabAndEraseSelection(LCursor & cur)
 391 {
 392         if (!cur.selection())
 393                 return docstring();
 394         docstring res = grabSelection(cur);
 395         eraseSelection(cur);
 396         return res;
 397 }
 398
 399
 400 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 401         InsetText & in, ErrorList & errorlist)
 402 {
 403         BOOST_ASSERT(!in.paragraphs().empty());
 404         if (c1 == c2)
 405                 return;
 406
 407         LyXTextClass const & tclass1 = textclasslist[c1];
 408         LyXTextClass const & tclass2 = textclasslist[c2];
 409
 410         // layouts
 411         ParIterator end = par_iterator_end(in);
 412         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 413                 string const name = it->layout()->name();
 414                 bool hasLayout = tclass2.hasLayout(name);
 415
 416                 if (hasLayout)
 417                         it->layout(tclass2[name]);
 418                 else
 419                         it->layout(tclass2.defaultLayout());
 420
 421                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 422                         docstring const s = bformat(
 423                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 424                                                 "because of class conversion from\n%3$s to %4$s"),
 425                          from_utf8(name), from_utf8(it->layout()->name()),
 426                          from_utf8(tclass1.name()), from_utf8(tclass2.name()));
 427                         // To warn the user that something had to be done.
 428                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 429                                                       it->id(), 0,
 430                                                       it->size()));
 431                 }
 432         }
 433
 434         // character styles
 435         InsetIterator const i_end = inset_iterator_end(in);
 436         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 437                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 438                         InsetCharStyle & inset =
 439                                 static_cast<InsetCharStyle &>(*it);
 440                         string const name = inset.params().type;
 441                         CharStyles::iterator const found_cs =
 442                                 tclass2.charstyle(name);
 443                         if (found_cs == tclass2.charstyles().end()) {
 444                                 // The character style is undefined in tclass2
 445                                 inset.setUndefined();
 446                                 docstring const s = bformat(_(
 447                                         "Character style %1$s is "
 448                                         "undefined because of class "
 449                                         "conversion from\n%2$s to %3$s"),
 450                                          from_utf8(name), from_utf8(tclass1.name()),
 451                                          from_utf8(tclass2.name()));
 452                                 // To warn the user that something had to be done.
 453                                 errorlist.push_back(ErrorItem(
 454                                         _("Undefined character style"),
 455                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 456                         } else if (inset.undefined()) {
 457                                 // The character style is undefined in
 458                                 // tclass1 and is defined in tclass2
 459                                 inset.setDefined(found_cs);
 460                         }
 461                 }
 462         }
 463 }
 464
 465
 466 std::vector<docstring> const availableSelections(Buffer const & buffer)
 467 {
 468         vector<docstring> selList;
 469
 470         CutStack::const_iterator cit = theCuts.begin();
 471         CutStack::const_iterator end = theCuts.end();
 472         for (; cit != end; ++cit) {
 473                 // we do not use cit-> here because gcc 2.9x does not
 474                 // like it (JMarc)
 475                 ParagraphList const & pars = (*cit).first;
 476                 docstring asciiSel;
 477                 ParagraphList::const_iterator pit = pars.begin();
 478                 ParagraphList::const_iterator pend = pars.end();
 479                 for (; pit != pend; ++pit) {
 480                         asciiSel += pit->asString(buffer, false);
 481                         if (asciiSel.size() > 25) {
 482                                 asciiSel.replace(22, docstring::npos,
 483                                                  from_ascii("..."));
 484                                 break;
 485                         }
 486                 }
 487
 488                 selList.push_back(asciiSel);
 489         }
 490
 491         return selList;
 492 }
 493
 494
 495 size_type numberOfSelections()
 496 {
 497         return theCuts.size();
 498 }
 499
 500
 501 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 502 {
 503         // This doesn't make sense, if there is no selection
 504         if (!cur.selection())
 505                 return;
 506
 507         // OK, we have a selection. This is always between cur.selBegin()
 508         // and cur.selEnd()
 509
 510         if (cur.inTexted()) {
 511                 LyXText * text = cur.text();
 512                 BOOST_ASSERT(text);
 513
 514                 // make sure that the depth behind the selection are restored, too
 515                 recordUndoSelection(cur);
 516                 pit_type begpit = cur.selBegin().pit();
 517                 pit_type endpit = cur.selEnd().pit();
 518
 519                 int endpos = cur.selEnd().pos();
 520
 521                 BufferParams const & bp = cur.buffer().params();
 522                 if (realcut) {
 523                         copySelectionHelper(cur.buffer(),
 524                                 text->paragraphs(),
 525                                 begpit, endpit,
 526                                 cur.selBegin().pos(), endpos,
 527                                 bp.textclass);
 528                         // Stuff what we got on the clipboard.
 529                         // Even if there is no selection.
 530                         putClipboard(theCuts[0].first, theCuts[0].second,
 531                                 cur.selectionAsString(true));
 532                 }
 533
 534                 boost::tie(endpit, endpos) =
 535                         eraseSelectionHelper(bp,
 536                                 text->paragraphs(),
 537                                 begpit, endpit,
 538                                 cur.selBegin().pos(), endpos,
 539                                 doclear);
 540
 541                 // sometimes necessary
 542                 if (doclear)
 543                         text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges);
 544
 545                 // cutSelection can invalidate the cursor so we need to set
 546                 // it anew. (Lgb)
 547                 // we prefer the end for when tracking changes
 548                 cur.pos() = endpos;
 549                 cur.pit() = endpit;
 550
 551                 // need a valid cursor. (Lgb)
 552                 cur.clearSelection();
 553                 updateLabels(cur.buffer());
 554                 theSelection().haveSelection(false);
 555
 556                 // tell tabular that a recent copy happened
 557                 dirtyTabularStack(false);
 558         }
 559
 560         if (cur.inMathed()) {
 561                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 562                         // The current selection spans more than one cell.
 563                         // Record all cells
 564                         recordUndoInset(cur);
 565                 } else {
 566                         // Record only the current cell to avoid a jumping
 567                         // cursor after undo
 568                         recordUndo(cur);
 569                 }
 570                 if (realcut)
 571                         copySelection(cur);
 572                 eraseSelection(cur);
 573         }
 574 }
 575
 576
 577 void copySelection(LCursor & cur)
 578 {
 579         copySelection(cur, cur.selectionAsString(true));
 580 }
 581
 582
 583 void copySelection(LCursor & cur, docstring const & plaintext)
 584 {
 585         copySelectionToStack(cur);
 586
 587         // stuff the selection onto the X clipboard, from an explicit copy request
 588         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 589 }
 590
 591
 592 void copySelectionToStack(LCursor & cur)
 593 {
 594         // this doesn't make sense, if there is no selection
 595         if (!cur.selection())
 596                 return;
 597
 598         if (cur.inTexted()) {
 599                 LyXText * text = cur.text();
 600                 BOOST_ASSERT(text);
 601                 // ok we have a selection. This is always between cur.selBegin()
 602                 // and sel_end cursor
 603
 604                 // copy behind a space if there is one
 605                 ParagraphList & pars = text->paragraphs();
 606                 pos_type pos = cur.selBegin().pos();
 607                 pit_type par = cur.selBegin().pit();
 608                 while (pos < pars[par].size()
 609                                          && pars[par].isLineSeparator(pos)
 610                                          && (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 611                         ++pos;
 612
 613                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 614                         pos, cur.selEnd().pos(), cur.buffer().params().textclass);
 615         }
 616
 617         if (cur.inMathed()) {
 618                 //lyxerr << "copySelection in mathed" << endl;
 619                 ParagraphList pars;
 620                 Paragraph par;
 621                 BufferParams const & bp = cur.buffer().params();
 622                 par.layout(bp.getLyXTextClass().defaultLayout());
 623                 par.insert(0, grabSelection(cur), LyXFont(), Change(Change::UNCHANGED));
 624                 pars.push_back(par);
 625                 theCuts.push(make_pair(pars, bp.textclass));
 626         }
 627         // tell tabular that a recent copy happened
 628         dirtyTabularStack(false);
 629 }
 630
 631
 632 docstring getSelection(Buffer const & buf, size_t sel_index)
 633 {
 634         return sel_index < theCuts.size()
 635                 ? theCuts[sel_index].first.back().asString(buf, false)
 636                 : docstring();
 637 }
 638
 639
 640 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 641                         textclass_type textclass, ErrorList & errorList)
 642 {
 643         if (cur.inTexted()) {
 644                 LyXText * text = cur.text();
 645                 BOOST_ASSERT(text);
 646
 647                 pit_type endpit;
 648                 PitPosPair ppp;
 649
 650                 boost::tie(ppp, endpit) =
 651                         pasteSelectionHelper(cur, parlist,
 652                                              textclass, errorList);
 653                 updateLabels(cur.buffer());
 654                 cur.clearSelection();
 655                 text->setCursor(cur.top(), ppp.first, ppp.second);
 656         }
 657
 658         // mathed is handled in InsetMathNest/InsetMathGrid
 659         BOOST_ASSERT(!cur.inMathed());
 660 }
 661
 662
 663 void pasteClipboard(LCursor & cur, ErrorList & errorList, bool asParagraphs)
 664 {
 665         // Use internal clipboard if it is the most recent one
 666         if (theClipboard().isInternal()) {
 667                 pasteSelection(cur, errorList, 0);
 668                 return;
 669         }
 670
 671         // First try LyX format
 672         if (theClipboard().hasLyXContents()) {
 673                 string lyx = theClipboard().getAsLyX();
 674                 if (!lyx.empty()) {
 675                         Buffer buffer(string(), false);
 676                         buffer.setUnnamed(true);
 677                         if (buffer.readString(lyx)) {
 678                                 recordUndo(cur);
 679                                 pasteParagraphList(cur, buffer.paragraphs(),
 680                                         buffer.params().textclass, errorList);
 681                                 cur.setSelection();
 682                                 return;
 683                         }
 684                 }
 685         }
 686
 687         // Then try plain text
 688         docstring const text = theClipboard().getAsText();
 689         if (text.empty())
 690                 return;
 691         recordUndo(cur);
 692         if (asParagraphs)
 693                 cur.text()->insertStringAsParagraphs(cur, text);
 694         else
 695                 cur.text()->insertStringAsLines(cur, text);
 696 }
 697
 698
 699 void pasteSelection(LCursor & cur, ErrorList & errorList, size_t sel_index)
 700 {
 701         // this does not make sense, if there is nothing to paste
 702         if (!checkPastePossible(sel_index))
 703                 return;
 704
 705         recordUndo(cur);
 706         pasteParagraphList(cur, theCuts[sel_index].first,
 707                            theCuts[sel_index].second, errorList);
 708         cur.setSelection();
 709 }
 710
 711
 712 void replaceSelectionWithString(LCursor & cur, docstring const & str, bool backwards)
 713 {
 714         recordUndo(cur);
 715         DocIterator selbeg = cur.selectionBegin();
 716
 717         // Get font setting before we cut
 718         LyXFont const font =
 719                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 720
 721         // Insert the new string
 722         pos_type pos = cur.selEnd().pos();
 723         Paragraph & par = cur.selEnd().paragraph();
 724         docstring::const_iterator cit = str.begin();
 725         docstring::const_iterator end = str.end();
 726         for (; cit != end; ++cit, ++pos)
 727                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 728
 729         // Cut the selection
 730         cutSelection(cur, true, false);
 731
 732         // select the replacement
 733         if (backwards) {
 734                 selbeg.pos() += str.length();
 735                 cur.setSelection(selbeg, -int(str.length()));
 736         } else
 737                 cur.setSelection(selbeg, str.length());
 738 }
 739
 740
 741 void replaceSelection(LCursor & cur)
 742 {
 743         if (cur.selection())
 744                 cutSelection(cur, true, false);
 745 }
 746
 747
 748 void eraseSelection(LCursor & cur)
 749 {
 750         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 751         CursorSlice const & i1 = cur.selBegin();
 752         CursorSlice const & i2 = cur.selEnd();
 753         if (i1.inset().asInsetMath()) {
 754                 cur.top() = i1;
 755                 if (i1.idx() == i2.idx()) {
 756                         i1.cell().erase(i1.pos(), i2.pos());
 757                         // We may have deleted i1.cell(cur.pos()).
 758                         // Make sure that pos is valid.
 759                         if (cur.pos() > cur.lastpos())
 760                                 cur.pos() = cur.lastpos();
 761                 } else {
 762                         InsetMath * p = i1.asInsetMath();
 763                         InsetBase::row_type r1, r2;
 764                         InsetBase::col_type c1, c2;
 765                         region(i1, i2, r1, r2, c1, c2);
 766                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 767                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 768                                         p->cell(p->index(row, col)).clear();
 769                         // We've deleted the whole cell. Only pos 0 is valid.
 770                         cur.pos() = 0;
 771                 }
 772                 // need a valid cursor. (Lgb)
 773                 cur.clearSelection();
 774                 theSelection().haveSelection(false);
 775         } else {
 776                 lyxerr << "can't erase this selection 1" << endl;
 777         }
 778         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 779 }
 780
 781
 782 void selDel(LCursor & cur)
 783 {
 784         //lyxerr << "cap::selDel" << endl;
 785         if (cur.selection())
 786                 eraseSelection(cur);
 787 }
 788
 789
 790 void selClearOrDel(LCursor & cur)
 791 {
 792         //lyxerr << "cap::selClearOrDel" << endl;
 793         if (lyxrc.auto_region_delete)
 794                 selDel(cur);
 795         else
 796                 cur.selection() = false;
 797 }
 798
 799
 800 docstring grabSelection(LCursor const & cur)
 801 {
 802         if (!cur.selection())
 803                 return docstring();
 804
 805         // FIXME: What is wrong with the following?
 806 #if 0
 807         std::ostringstream os;
 808         for (DocIterator dit = cur.selectionBegin();
 809              dit != cur.selectionEnd(); dit.forwardPos())
 810                 os << asString(dit.cell());
 811         return os.str();
 812 #endif
 813
 814         CursorSlice i1 = cur.selBegin();
 815         CursorSlice i2 = cur.selEnd();
 816
 817         if (i1.idx() == i2.idx()) {
 818                 if (i1.inset().asInsetMath()) {
 819                         MathArray::const_iterator it = i1.cell().begin();
 820                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 821                 } else {
 822                         return from_ascii("unknown selection 1");
 823                 }
 824         }
 825
 826         InsetBase::row_type r1, r2;
 827         InsetBase::col_type c1, c2;
 828         region(i1, i2, r1, r2, c1, c2);
 829
 830         docstring data;
 831         if (i1.inset().asInsetMath()) {
 832                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 833                         if (row > r1)
 834                                 data += "\\\\";
 835                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 836                                 if (col > c1)
 837                                         data += '&';
 838                                 data += asString(i1.asInsetMath()->
 839                                         cell(i1.asInsetMath()->index(row, col)));
 840                         }
 841                 }
 842         } else {
 843                 data = from_ascii("unknown selection 2");
 844         }
 845         return data;
 846 }
 847
 848
 849 void dirtyTabularStack(bool b)
 850 {
 851         dirty_tabular_stack_ = b;
 852 }
 853
 854
 855 bool tabularStackDirty()
 856 {
 857         return dirty_tabular_stack_;
 858 }
 859
 860
 861 } // namespace cap
 862
 863 } // namespace lyx