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/current_function.hpp>
  53 #include <boost/tuple/tuple.hpp>
  54
  55 #include <string>
  56
  57 using std::endl;
  58 using std::for_each;
  59 using std::make_pair;
  60 using std::pair;
  61 using std::vector;
  62 using std::string;
  63
  64
  65 namespace lyx {
  66
  67 using support::bformat;
  68 using frontend::Clipboard;
  69
  70 namespace {
  71
  72 typedef std::pair<pit_type, int> PitPosPair;
  73
  74 typedef limited_stack<pair<ParagraphList, textclass_type> > CutStack;
  75
  76 CutStack theCuts(10);
  77 // persistent selection, cleared until the next selection
  78 CutStack selectionBuffer(1);
  79
  80 // store whether the tabular stack is newer than the normal copy stack
  81 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  82 // when we (hopefully) have a one-for-all paste mechanism.
  83 bool dirty_tabular_stack_ = false;
  84
  85
  86 void region(CursorSlice const & i1, CursorSlice const & i2,
  87         InsetBase::row_type & r1, InsetBase::row_type & r2,
  88         InsetBase::col_type & c1, InsetBase::col_type & c2)
  89 {
  90         InsetBase & p = i1.inset();
  91         c1 = p.col(i1.idx());
  92         c2 = p.col(i2.idx());
  93         if (c1 > c2)
  94                 std::swap(c1, c2);
  95         r1 = p.row(i1.idx());
  96         r2 = p.row(i2.idx());
  97         if (r1 > r2)
  98                 std::swap(r1, r2);
  99 }
 100
 101
 102 bool checkPastePossible(int index)
 103 {
 104         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 105 }
 106
 107
 108 pair<PitPosPair, pit_type>
 109 pasteSelectionHelper(LCursor & cur, ParagraphList const & parlist,
 110                      textclass_type textclass, ErrorList & errorlist)
 111 {
 112         Buffer const & buffer = cur.buffer();
 113         pit_type pit = cur.pit();
 114         pos_type pos = cur.pos();
 115         ParagraphList & pars = cur.text()->paragraphs();
 116
 117         if (parlist.empty())
 118                 return make_pair(PitPosPair(pit, pos), pit);
 119
 120         BOOST_ASSERT (pos <= pars[pit].size());
 121
 122         // Make a copy of the CaP paragraphs.
 123         ParagraphList insertion = parlist;
 124         textclass_type const tc = buffer.params().textclass;
 125
 126         // Now remove all out of the pars which is NOT allowed in the
 127         // new environment and set also another font if that is required.
 128
 129         // Convert newline to paragraph break in ERT inset.
 130         // This should not be here!
 131         if (pars[pit].inInset() &&
 132             pars[pit].inInset()->lyxCode() == InsetBase::ERT_CODE) {
 133                 for (ParagraphList::size_type i = 0; i < insertion.size(); ++i) {
 134                         for (pos_type j = 0; j < insertion[i].size(); ++j) {
 135                                 if (insertion[i].isNewline(j)) {
 136                                         // do not track deletion of newline
 137                                         insertion[i].eraseChar(j, false);
 138                                         breakParagraphConservative(
 139                                                         buffer.params(),
 140                                                         insertion, i, j);
 141                                 }
 142                         }
 143                 }
 144         }
 145
 146         // If we are in an inset which returns forceDefaultParagraphs,
 147         // set the paragraphs to default
 148         if (cur.inset().forceDefaultParagraphs(cur.idx())) {
 149                 LyXLayout_ptr const layout =
 150                         buffer.params().getLyXTextClass().defaultLayout();
 151                 ParagraphList::iterator const end = insertion.end();
 152                 for (ParagraphList::iterator par = insertion.begin();
 153                                 par != end; ++par)
 154                         par->layout(layout);
 155         }
 156
 157         // Make sure there is no class difference.
 158         InsetText in;
 159         // This works without copying any paragraph data because we have
 160         // a specialized swap method for ParagraphList. This is important
 161         // since we store pointers to insets at some places and we don't
 162         // want to invalidate them.
 163         insertion.swap(in.paragraphs());
 164         cap::switchBetweenClasses(textclass, tc, in, errorlist);
 165         insertion.swap(in.paragraphs());
 166
 167         ParagraphList::iterator tmpbuf = insertion.begin();
 168         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 169
 170         depth_type max_depth = pars[pit].getMaxDepthAfter();
 171
 172         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 173                 // If we have a negative jump so that the depth would
 174                 // go below 0 depth then we have to redo the delta to
 175                 // this new max depth level so that subsequent
 176                 // paragraphs are aligned correctly to this paragraph
 177                 // at level 0.
 178                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 179                         depth_delta = 0;
 180
 181                 // Set the right depth so that we are not too deep or shallow.
 182                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 183                 if (tmpbuf->params().depth() > max_depth)
 184                         tmpbuf->params().depth(max_depth);
 185
 186                 // Only set this from the 2nd on as the 2nd depends
 187                 // for maxDepth still on pit.
 188                 if (tmpbuf != insertion.begin())
 189                         max_depth = tmpbuf->getMaxDepthAfter();
 190
 191                 // Set the inset owner of this paragraph.
 192                 tmpbuf->setInsetOwner(pars[pit].inInset());
 193                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 194                         if (tmpbuf->getChar(i) == Paragraph::META_INSET &&
 195                             !pars[pit].insetAllowed(tmpbuf->getInset(i)->lyxCode()))
 196                                 // do not track deletion of invalid insets
 197                                 tmpbuf->eraseChar(i--, false);
 198                 }
 199
 200                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 201                                          Change::INSERTED : Change::UNCHANGED));
 202         }
 203
 204         bool const empty = pars[pit].empty();
 205         if (!empty) {
 206                 // Make the buf exactly the same layout as the cursor
 207                 // paragraph.
 208                 insertion.begin()->makeSameLayout(pars[pit]);
 209         }
 210
 211         // Prepare the paragraphs and insets for insertion.
 212         // A couple of insets store buffer references so need updating.
 213         insertion.swap(in.paragraphs());
 214
 215         ParIterator fpit = par_iterator_begin(in);
 216         ParIterator fend = par_iterator_end(in);
 217
 218         for (; fpit != fend; ++fpit) {
 219                 InsetList::const_iterator lit = fpit->insetlist.begin();
 220                 InsetList::const_iterator eit = fpit->insetlist.end();
 221
 222                 for (; lit != eit; ++lit) {
 223                         switch (lit->inset->lyxCode()) {
 224                         case InsetBase::TABULAR_CODE: {
 225                                 InsetTabular * it = static_cast<InsetTabular*>(lit->inset);
 226                                 it->buffer(&buffer);
 227                                 break;
 228                         }
 229
 230                         default:
 231                                 break; // nothing
 232                         }
 233                 }
 234         }
 235         insertion.swap(in.paragraphs());
 236
 237         // Split the paragraph for inserting the buf if necessary.
 238         if (!empty)
 239                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 240
 241         // Paste it!
 242         if (empty) {
 243                 pars.insert(boost::next(pars.begin(), pit),
 244                             insertion.begin(),
 245                             insertion.end());
 246
 247                 // merge the empty par with the last par of the insertion
 248                 mergeParagraph(buffer.params(), pars,
 249                                pit + insertion.size() - 1);
 250         } else {
 251                 pars.insert(boost::next(pars.begin(), pit + 1),
 252                             insertion.begin(),
 253                             insertion.end());
 254
 255                 // merge the first par of the insertion with the current par
 256                 mergeParagraph(buffer.params(), pars, pit);
 257         }
 258
 259         pit_type last_paste = pit + insertion.size() - 1;
 260
 261         // Store the new cursor position.
 262         pit = last_paste;
 263         pos = pars[last_paste].size();
 264
 265         // Join (conditionally) last pasted paragraph with next one, i.e.,
 266         // the tail of the spliced document paragraph
 267         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 268                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 269                         mergeParagraph(buffer.params(), pars, last_paste);
 270                 } else if (pars[last_paste + 1].empty()) {
 271                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 272                         mergeParagraph(buffer.params(), pars, last_paste);
 273                 } else if (pars[last_paste].empty()) {
 274                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 275                         mergeParagraph(buffer.params(), pars, last_paste);
 276                 } else {
 277                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 278                         ++last_paste;
 279                 }
 280         }
 281
 282         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 283 }
 284
 285
 286 PitPosPair eraseSelectionHelper(BufferParams const & params,
 287         ParagraphList & pars,
 288         pit_type startpit, pit_type endpit,
 289         int startpos, int endpos, bool doclear)
 290 {
 291         // Start of selection is really invalid.
 292         if (startpit == pit_type(pars.size()) ||
 293             (startpos > pars[startpit].size()))
 294                 return PitPosPair(endpit, endpos);
 295
 296         // Start and end is inside same paragraph
 297         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 298                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 299                 return PitPosPair(endpit, endpos);
 300         }
 301
 302         for (pit_type pit = startpit; pit != endpit + 1;) {
 303                 pos_type const left  = (pit == startpit ? startpos : 0);
 304                 pos_type const right = (pit == endpit ? endpos : pars[pit].size() + 1);
 305
 306                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 307
 308                 // Logically erase only, including the end-of-paragraph character
 309                 pars[pit].eraseChars(left, right, params.trackChanges);
 310
 311                 // Separate handling of paragraph break:
 312                 if (merge && pit != endpit &&
 313                     (pit + 1 != endpit || pars[pit].hasSameLayout(pars[pit + 1]))) {
 314                         pos_type const thissize = pars[pit].size();
 315                         if (doclear)
 316                                 pars[pit + 1].stripLeadingSpaces(params.trackChanges);
 317                         mergeParagraph(params, pars, pit);
 318                         --endpit;
 319                         if (pit == endpit)
 320                                 endpos += thissize;
 321                 } else
 322                         ++pit;
 323         }
 324
 325         // Ensure legal cursor pos:
 326         endpit = startpit;
 327         endpos = startpos;
 328         return PitPosPair(endpit, endpos);
 329 }
 330
 331
 332 void putClipboard(ParagraphList const & paragraphs, textclass_type textclass,
 333                   docstring const & plaintext)
 334 {
 335         // For some strange reason gcc 3.2 and 3.3 do not accept
 336         // Buffer buffer(string(), false);
 337         Buffer buffer("", false);
 338         buffer.setUnnamed(true);
 339         buffer.paragraphs() = paragraphs;
 340         buffer.params().textclass = textclass;
 341         std::ostringstream lyx;
 342         if (buffer.write(lyx))
 343                 theClipboard().put(lyx.str(), plaintext);
 344         else
 345                 theClipboard().put(string(), plaintext);
 346 }
 347
 348
 349 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 350         pit_type startpit, pit_type endpit,
 351         int start, int end, textclass_type tc, CutStack & cutstack)
 352 {
 353         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 354         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 355         BOOST_ASSERT(startpit != endpit || start <= end);
 356
 357         // Clone the paragraphs within the selection.
 358         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 359                                 boost::next(pars.begin(), endpit + 1));
 360
 361         // Remove the end of the last paragraph; afterwards, remove the beginning
 362         // of the first paragraph. Keep this order - there may only be one paragraph!
 363         // Do not track deletions here; this is an internal action not visible to the user
 364         Paragraph & back = copy_pars.back();
 365         back.eraseChars(end, back.size(), false);
 366         Paragraph & front = copy_pars.front();
 367         front.eraseChars(0, start, false);
 368
 369         ParagraphList::iterator it = copy_pars.begin();
 370         ParagraphList::iterator it_end = copy_pars.end();
 371
 372         for (; it != it_end; it++) {
 373                 // ERT paragraphs have the Language latex_language.
 374                 // This is invalid outside of ERT, so we need to change it
 375                 // to the buffer language.
 376                 if (it->ownerCode() == InsetBase::ERT_CODE) {
 377                         it->changeLanguage(buf.params(), latex_language,
 378                                            buf.getLanguage());
 379                 }
 380                 it->setInsetOwner(0);
 381         }
 382
 383         // do not copy text (also nested in insets) which is marked as deleted
 384         // acceptChanges() is defined for LyXText rather than ParagraphList
 385         // Thus we must wrap copy_pars into a LyXText object and cross our fingers
 386         LyXText lt;
 387         copy_pars.swap(lt.paragraphs());
 388         lt.acceptChanges(buf.params());
 389         copy_pars.swap(lt.paragraphs());
 390
 391         cutstack.push(make_pair(copy_pars, tc));
 392 }
 393
 394 } // namespace anon
 395
 396
 397
 398
 399 namespace cap {
 400
 401 docstring grabAndEraseSelection(LCursor & cur)
 402 {
 403         if (!cur.selection())
 404                 return docstring();
 405         docstring res = grabSelection(cur);
 406         eraseSelection(cur);
 407         return res;
 408 }
 409
 410
 411 void switchBetweenClasses(textclass_type c1, textclass_type c2,
 412         InsetText & in, ErrorList & errorlist)
 413 {
 414         BOOST_ASSERT(!in.paragraphs().empty());
 415         if (c1 == c2)
 416                 return;
 417
 418         LyXTextClass const & tclass1 = textclasslist[c1];
 419         LyXTextClass const & tclass2 = textclasslist[c2];
 420
 421         // layouts
 422         ParIterator end = par_iterator_end(in);
 423         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 424                 string const name = it->layout()->name();
 425                 bool hasLayout = tclass2.hasLayout(name);
 426
 427                 if (hasLayout)
 428                         it->layout(tclass2[name]);
 429                 else
 430                         it->layout(tclass2.defaultLayout());
 431
 432                 if (!hasLayout && name != tclass1.defaultLayoutName()) {
 433                         docstring const s = bformat(
 434                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 435                                                 "because of class conversion from\n%3$s to %4$s"),
 436                          from_utf8(name), from_utf8(it->layout()->name()),
 437                          from_utf8(tclass1.name()), from_utf8(tclass2.name()));
 438                         // To warn the user that something had to be done.
 439                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 440                                                       it->id(), 0,
 441                                                       it->size()));
 442                 }
 443         }
 444
 445         // character styles
 446         InsetIterator const i_end = inset_iterator_end(in);
 447         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 448                 if (it->lyxCode() == InsetBase::CHARSTYLE_CODE) {
 449                         InsetCharStyle & inset =
 450                                 static_cast<InsetCharStyle &>(*it);
 451                         string const name = inset.params().type;
 452                         CharStyles::iterator const found_cs =
 453                                 tclass2.charstyle(name);
 454                         if (found_cs == tclass2.charstyles().end()) {
 455                                 // The character style is undefined in tclass2
 456                                 inset.setUndefined();
 457                                 docstring const s = bformat(_(
 458                                         "Character style %1$s is "
 459                                         "undefined because of class "
 460                                         "conversion from\n%2$s to %3$s"),
 461                                          from_utf8(name), from_utf8(tclass1.name()),
 462                                          from_utf8(tclass2.name()));
 463                                 // To warn the user that something had to be done.
 464                                 errorlist.push_back(ErrorItem(
 465                                         _("Undefined character style"),
 466                                         s, it.paragraph().id(), it.pos(), it.pos() + 1));
 467                         } else if (inset.undefined()) {
 468                                 // The character style is undefined in
 469                                 // tclass1 and is defined in tclass2
 470                                 inset.setDefined(found_cs);
 471                         }
 472                 }
 473         }
 474 }
 475
 476
 477 std::vector<docstring> const availableSelections(Buffer const & buffer)
 478 {
 479         vector<docstring> selList;
 480
 481         CutStack::const_iterator cit = theCuts.begin();
 482         CutStack::const_iterator end = theCuts.end();
 483         for (; cit != end; ++cit) {
 484                 // we do not use cit-> here because gcc 2.9x does not
 485                 // like it (JMarc)
 486                 ParagraphList const & pars = (*cit).first;
 487                 docstring asciiSel;
 488                 ParagraphList::const_iterator pit = pars.begin();
 489                 ParagraphList::const_iterator pend = pars.end();
 490                 for (; pit != pend; ++pit) {
 491                         asciiSel += pit->asString(buffer, false);
 492                         if (asciiSel.size() > 25) {
 493                                 asciiSel.replace(22, docstring::npos,
 494                                                  from_ascii("..."));
 495                                 break;
 496                         }
 497                 }
 498
 499                 selList.push_back(asciiSel);
 500         }
 501
 502         return selList;
 503 }
 504
 505
 506 size_type numberOfSelections()
 507 {
 508         return theCuts.size();
 509 }
 510
 511
 512 void cutSelection(LCursor & cur, bool doclear, bool realcut)
 513 {
 514         // This doesn't make sense, if there is no selection
 515         if (!cur.selection())
 516                 return;
 517
 518         // OK, we have a selection. This is always between cur.selBegin()
 519         // and cur.selEnd()
 520
 521         if (cur.inTexted()) {
 522                 LyXText * text = cur.text();
 523                 BOOST_ASSERT(text);
 524
 525                 // make sure that the depth behind the selection are restored, too
 526                 recordUndoSelection(cur);
 527                 pit_type begpit = cur.selBegin().pit();
 528                 pit_type endpit = cur.selEnd().pit();
 529
 530                 int endpos = cur.selEnd().pos();
 531
 532                 BufferParams const & bp = cur.buffer().params();
 533                 if (realcut) {
 534                         copySelectionHelper(cur.buffer(),
 535                                 text->paragraphs(),
 536                                 begpit, endpit,
 537                                 cur.selBegin().pos(), endpos,
 538                                 bp.textclass, theCuts);
 539                         // Stuff what we got on the clipboard.
 540                         // Even if there is no selection.
 541                         putClipboard(theCuts[0].first, theCuts[0].second,
 542                                 cur.selectionAsString(true));
 543                 }
 544
 545                 boost::tie(endpit, endpos) =
 546                         eraseSelectionHelper(bp,
 547                                 text->paragraphs(),
 548                                 begpit, endpit,
 549                                 cur.selBegin().pos(), endpos,
 550                                 doclear);
 551
 552                 // cutSelection can invalidate the cursor so we need to set
 553                 // it anew. (Lgb)
 554                 // we prefer the end for when tracking changes
 555                 cur.pos() = endpos;
 556                 cur.pit() = endpit;
 557
 558                 // sometimes necessary
 559                 if (doclear
 560                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 561                         cur.fixIfBroken();
 562
 563                 // need a valid cursor. (Lgb)
 564                 cur.clearSelection();
 565                 updateLabels(cur.buffer());
 566                 theSelection().haveSelection(false);
 567
 568                 // tell tabular that a recent copy happened
 569                 dirtyTabularStack(false);
 570         }
 571
 572         if (cur.inMathed()) {
 573                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 574                         // The current selection spans more than one cell.
 575                         // Record all cells
 576                         recordUndoInset(cur);
 577                 } else {
 578                         // Record only the current cell to avoid a jumping
 579                         // cursor after undo
 580                         recordUndo(cur);
 581                 }
 582                 if (realcut)
 583                         copySelection(cur);
 584                 eraseSelection(cur);
 585         }
 586 }
 587
 588
 589 void copySelection(LCursor & cur)
 590 {
 591         copySelection(cur, cur.selectionAsString(true));
 592 }
 593
 594
 595 namespace {
 596
 597 void copySelectionToStack(LCursor & cur, CutStack & cutstack)
 598 {
 599         // this doesn't make sense, if there is no selection
 600         if (!cur.selection())
 601                 return;
 602
 603         if (cur.inTexted()) {
 604                 LyXText * text = cur.text();
 605                 BOOST_ASSERT(text);
 606                 // ok we have a selection. This is always between cur.selBegin()
 607                 // and sel_end cursor
 608
 609                 // copy behind a space if there is one
 610                 ParagraphList & pars = text->paragraphs();
 611                 pos_type pos = cur.selBegin().pos();
 612                 pit_type par = cur.selBegin().pit();
 613                 while (pos < pars[par].size() &&
 614                        pars[par].isLineSeparator(pos) &&
 615                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 616                         ++pos;
 617
 618                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 619                         pos, cur.selEnd().pos(), cur.buffer().params().textclass, cutstack);
 620         }
 621
 622         if (cur.inMathed()) {
 623                 //lyxerr << "copySelection in mathed" << endl;
 624                 ParagraphList pars;
 625                 Paragraph par;
 626                 BufferParams const & bp = cur.buffer().params();
 627                 par.layout(bp.getLyXTextClass().defaultLayout());
 628                 par.insert(0, grabSelection(cur), LyXFont(), Change(Change::UNCHANGED));
 629                 pars.push_back(par);
 630                 cutstack.push(make_pair(pars, bp.textclass));
 631         }
 632 }
 633
 634 }
 635
 636
 637 void copySelectionToStack()
 638 {
 639         if (!selectionBuffer.empty())
 640                 theCuts.push(selectionBuffer[0]);
 641 }
 642
 643
 644 void copySelection(LCursor & cur, docstring const & plaintext)
 645 {
 646         copySelectionToStack(cur, theCuts);
 647
 648         // stuff the selection onto the X clipboard, from an explicit copy request
 649         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 650 }
 651
 652
 653 void saveSelection(LCursor & cur)
 654 {
 655         if (lyxerr.debugging(Debug::ACTION))
 656                 lyxerr << BOOST_CURRENT_FUNCTION << ": `"
 657                        << to_utf8(cur.selectionAsString(true)) << "'."
 658                        << endl;
 659
 660         if (cur.selection())
 661                 copySelectionToStack(cur, selectionBuffer);
 662         // tell X whether we now have a valid selection
 663         theSelection().haveSelection(cur.selection());
 664 }
 665
 666
 667 bool selection()
 668 {
 669         return !selectionBuffer.empty();
 670 }
 671
 672
 673 void clearSelection()
 674 {
 675         selectionBuffer.clear();
 676 }
 677
 678
 679 docstring getSelection(Buffer const & buf, size_t sel_index)
 680 {
 681         return sel_index < theCuts.size()
 682                 ? theCuts[sel_index].first.back().asString(buf, false)
 683                 : docstring();
 684 }
 685
 686
 687 void pasteParagraphList(LCursor & cur, ParagraphList const & parlist,
 688                         textclass_type textclass, ErrorList & errorList)
 689 {
 690         if (cur.inTexted()) {
 691                 LyXText * text = cur.text();
 692                 BOOST_ASSERT(text);
 693
 694                 pit_type endpit;
 695                 PitPosPair ppp;
 696
 697                 boost::tie(ppp, endpit) =
 698                         pasteSelectionHelper(cur, parlist,
 699                                              textclass, errorList);
 700                 updateLabels(cur.buffer());
 701                 cur.clearSelection();
 702                 text->setCursor(cur.top(), ppp.first, ppp.second);
 703         }
 704
 705         // mathed is handled in InsetMathNest/InsetMathGrid
 706         BOOST_ASSERT(!cur.inMathed());
 707 }
 708
 709
 710 void pasteFromStack(LCursor & cur, ErrorList & errorList, size_t sel_index)
 711 {
 712         // this does not make sense, if there is nothing to paste
 713         if (!checkPastePossible(sel_index))
 714                 return;
 715
 716         recordUndo(cur);
 717         pasteParagraphList(cur, theCuts[sel_index].first,
 718                            theCuts[sel_index].second, errorList);
 719         cur.setSelection();
 720         saveSelection(cur);
 721 }
 722
 723
 724 void pasteClipboard(LCursor & cur, ErrorList & errorList, bool asParagraphs)
 725 {
 726         // Use internal clipboard if it is the most recent one
 727         if (theClipboard().isInternal()) {
 728                 pasteFromStack(cur, errorList, 0);
 729                 return;
 730         }
 731
 732         // First try LyX format
 733         if (theClipboard().hasLyXContents()) {
 734                 string lyx = theClipboard().getAsLyX();
 735                 if (!lyx.empty()) {
 736                         // For some strange reason gcc 3.2 and 3.3 do not accept
 737                         // Buffer buffer(string(), false);
 738                         Buffer buffer("", false);
 739                         buffer.setUnnamed(true);
 740                         if (buffer.readString(lyx)) {
 741                                 recordUndo(cur);
 742                                 pasteParagraphList(cur, buffer.paragraphs(),
 743                                         buffer.params().textclass, errorList);
 744                                 cur.setSelection();
 745                                 return;
 746                         }
 747                 }
 748         }
 749
 750         // Then try plain text
 751         docstring const text = theClipboard().getAsText();
 752         if (text.empty())
 753                 return;
 754         recordUndo(cur);
 755         if (asParagraphs)
 756                 cur.text()->insertStringAsParagraphs(cur, text);
 757         else
 758                 cur.text()->insertStringAsLines(cur, text);
 759 }
 760
 761
 762 void pasteSelection(LCursor & cur, ErrorList & errorList)
 763 {
 764         if (selectionBuffer.empty())
 765                 return;
 766         recordUndo(cur);
 767         pasteParagraphList(cur, selectionBuffer[0].first,
 768                            selectionBuffer[0].second, errorList);
 769         cur.setSelection();
 770 }
 771
 772
 773 void replaceSelectionWithString(LCursor & cur, docstring const & str, bool backwards)
 774 {
 775         recordUndo(cur);
 776         DocIterator selbeg = cur.selectionBegin();
 777
 778         // Get font setting before we cut
 779         LyXFont const font =
 780                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 781
 782         // Insert the new string
 783         pos_type pos = cur.selEnd().pos();
 784         Paragraph & par = cur.selEnd().paragraph();
 785         docstring::const_iterator cit = str.begin();
 786         docstring::const_iterator end = str.end();
 787         for (; cit != end; ++cit, ++pos)
 788                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 789
 790         // Cut the selection
 791         cutSelection(cur, true, false);
 792
 793         // select the replacement
 794         if (backwards) {
 795                 selbeg.pos() += str.length();
 796                 cur.setSelection(selbeg, -int(str.length()));
 797         } else
 798                 cur.setSelection(selbeg, str.length());
 799         saveSelection(cur);
 800 }
 801
 802
 803 void replaceSelection(LCursor & cur)
 804 {
 805         if (cur.selection())
 806                 cutSelection(cur, true, false);
 807 }
 808
 809
 810 void eraseSelection(LCursor & cur)
 811 {
 812         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 813         CursorSlice const & i1 = cur.selBegin();
 814         CursorSlice const & i2 = cur.selEnd();
 815         if (i1.inset().asInsetMath()) {
 816                 cur.top() = i1;
 817                 if (i1.idx() == i2.idx()) {
 818                         i1.cell().erase(i1.pos(), i2.pos());
 819                         // We may have deleted i1.cell(cur.pos()).
 820                         // Make sure that pos is valid.
 821                         if (cur.pos() > cur.lastpos())
 822                                 cur.pos() = cur.lastpos();
 823                 } else {
 824                         InsetMath * p = i1.asInsetMath();
 825                         InsetBase::row_type r1, r2;
 826                         InsetBase::col_type c1, c2;
 827                         region(i1, i2, r1, r2, c1, c2);
 828                         for (InsetBase::row_type row = r1; row <= r2; ++row)
 829                                 for (InsetBase::col_type col = c1; col <= c2; ++col)
 830                                         p->cell(p->index(row, col)).clear();
 831                         // We've deleted the whole cell. Only pos 0 is valid.
 832                         cur.pos() = 0;
 833                 }
 834                 // need a valid cursor. (Lgb)
 835                 cur.clearSelection();
 836                 theSelection().haveSelection(false);
 837         } else {
 838                 lyxerr << "can't erase this selection 1" << endl;
 839         }
 840         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 841 }
 842
 843
 844 void selDel(LCursor & cur)
 845 {
 846         //lyxerr << "cap::selDel" << endl;
 847         if (cur.selection())
 848                 eraseSelection(cur);
 849 }
 850
 851
 852 void selClearOrDel(LCursor & cur)
 853 {
 854         //lyxerr << "cap::selClearOrDel" << endl;
 855         if (lyxrc.auto_region_delete)
 856                 selDel(cur);
 857         else
 858                 cur.selection() = false;
 859 }
 860
 861
 862 docstring grabSelection(LCursor const & cur)
 863 {
 864         if (!cur.selection())
 865                 return docstring();
 866
 867         // FIXME: What is wrong with the following?
 868 #if 0
 869         std::ostringstream os;
 870         for (DocIterator dit = cur.selectionBegin();
 871              dit != cur.selectionEnd(); dit.forwardPos())
 872                 os << asString(dit.cell());
 873         return os.str();
 874 #endif
 875
 876         CursorSlice i1 = cur.selBegin();
 877         CursorSlice i2 = cur.selEnd();
 878
 879         if (i1.idx() == i2.idx()) {
 880                 if (i1.inset().asInsetMath()) {
 881                         MathArray::const_iterator it = i1.cell().begin();
 882                         return asString(MathArray(it + i1.pos(), it + i2.pos()));
 883                 } else {
 884                         return from_ascii("unknown selection 1");
 885                 }
 886         }
 887
 888         InsetBase::row_type r1, r2;
 889         InsetBase::col_type c1, c2;
 890         region(i1, i2, r1, r2, c1, c2);
 891
 892         docstring data;
 893         if (i1.inset().asInsetMath()) {
 894                 for (InsetBase::row_type row = r1; row <= r2; ++row) {
 895                         if (row > r1)
 896                                 data += "\\\\";
 897                         for (InsetBase::col_type col = c1; col <= c2; ++col) {
 898                                 if (col > c1)
 899                                         data += '&';
 900                                 data += asString(i1.asInsetMath()->
 901                                         cell(i1.asInsetMath()->index(row, col)));
 902                         }
 903                 }
 904         } else {
 905                 data = from_ascii("unknown selection 2");
 906         }
 907         return data;
 908 }
 909
 910
 911 void dirtyTabularStack(bool b)
 912 {
 913         dirty_tabular_stack_ = b;
 914 }
 915
 916
 917 bool tabularStackDirty()
 918 {
 919         return dirty_tabular_stack_;
 920 }
 921
 922
 923 } // namespace cap
 924
 925 } // namespace lyx