src/CutAndPaste.cpp

   1 /**
   2  * \file CutAndPaste.cpp
   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 "BufferView.h"
  22 #include "Changes.h"
  23 #include "Cursor.h"
  24 #include "ErrorList.h"
  25 #include "FuncRequest.h"
  26 #include "InsetIterator.h"
  27 #include "InsetList.h"
  28 #include "Language.h"
  29 #include "lfuns.h"
  30 #include "LyXFunc.h"
  31 #include "LyXRC.h"
  32 #include "Text.h"
  33 #include "Paragraph.h"
  34 #include "paragraph_funcs.h"
  35 #include "ParagraphParameters.h"
  36 #include "ParIterator.h"
  37 #include "Undo.h"
  38
  39 #include "insets/InsetFlex.h"
  40 #include "insets/InsetCommand.h"
  41 #include "insets/InsetGraphics.h"
  42 #include "insets/InsetGraphicsParams.h"
  43 #include "insets/InsetTabular.h"
  44
  45 #include "mathed/MathData.h"
  46 #include "mathed/InsetMath.h"
  47 #include "mathed/MathSupport.h"
  48
  49 #include "support/debug.h"
  50 #include "support/docstream.h"
  51 #include "support/gettext.h"
  52 #include "support/limited_stack.h"
  53 #include "support/lstrings.h"
  54
  55 #include "frontends/Clipboard.h"
  56 #include "frontends/Selection.h"
  57
  58 #include <boost/tuple/tuple.hpp>
  59 #include <boost/next_prior.hpp>
  60
  61 #include <string>
  62
  63 using namespace std;
  64 using namespace lyx::support;
  65 using lyx::frontend::Clipboard;
  66
  67 namespace lyx {
  68
  69 namespace {
  70
  71 typedef pair<pit_type, int> PitPosPair;
  72
  73 typedef limited_stack<pair<ParagraphList, DocumentClass const *> > CutStack;
  74
  75 CutStack theCuts(10);
  76 // persistent selection, cleared until the next selection
  77 CutStack selectionBuffer(1);
  78
  79 // store whether the tabular stack is newer than the normal copy stack
  80 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  81 // when we (hopefully) have a one-for-all paste mechanism.
  82 bool dirty_tabular_stack_ = false;
  83
  84
  85 void region(CursorSlice const & i1, CursorSlice const & i2,
  86         Inset::row_type & r1, Inset::row_type & r2,
  87         Inset::col_type & c1, Inset::col_type & c2)
  88 {
  89         Inset & p = i1.inset();
  90         c1 = p.col(i1.idx());
  91         c2 = p.col(i2.idx());
  92         if (c1 > c2)
  93                 swap(c1, c2);
  94         r1 = p.row(i1.idx());
  95         r2 = p.row(i2.idx());
  96         if (r1 > r2)
  97                 swap(r1, r2);
  98 }
  99
 100
 101 bool checkPastePossible(int index)
 102 {
 103         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 104 }
 105
 106
 107 pair<PitPosPair, pit_type>
 108 pasteSelectionHelper(Cursor & cur, ParagraphList const & parlist,
 109                      DocumentClass const * const docclass, ErrorList & errorlist)
 110 {
 111         Buffer const & buffer = cur.buffer();
 112         pit_type pit = cur.pit();
 113         pos_type pos = cur.pos();
 114         ParagraphList & pars = cur.text()->paragraphs();
 115
 116         if (parlist.empty())
 117                 return make_pair(PitPosPair(pit, pos), pit);
 118
 119         BOOST_ASSERT (pos <= pars[pit].size());
 120
 121         // Make a copy of the CaP paragraphs.
 122         ParagraphList insertion = parlist;
 123         DocumentClass const * const tc = buffer.params().documentClassPtr();
 124
 125         // Now remove all out of the pars which is NOT allowed in the
 126         // new environment and set also another font if that is required.
 127
 128         // Convert newline to paragraph break in ERT inset.
 129         // This should not be here!
 130         Inset * inset = pars[pit].inInset();
 131         if (inset && (inset->lyxCode() == ERT_CODE ||
 132                         inset->lyxCode() == LISTINGS_CODE)) {
 133                 for (size_t 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         // set the paragraphs to empty layout if necessary
 147         // note that we are doing this if the empty layout is
 148         // supposed to be the default, not just if it is forced
 149         if (cur.inset().useEmptyLayout()) {
 150                 LayoutPtr const layout =
 151                         buffer.params().documentClass().emptyLayout();
 152                 ParagraphList::iterator const end = insertion.end();
 153                 for (ParagraphList::iterator par = insertion.begin();
 154                                 par != end; ++par)
 155                         par->setLayout(layout);
 156         }
 157
 158         // Make sure there is no class difference.
 159         InsetText in;
 160         // This works without copying any paragraph data because we have
 161         // a specialized swap method for ParagraphList. This is important
 162         // since we store pointers to insets at some places and we don't
 163         // want to invalidate them.
 164         insertion.swap(in.paragraphs());
 165         cap::switchBetweenClasses(docclass, tc, in, errorlist);
 166         insertion.swap(in.paragraphs());
 167
 168         ParagraphList::iterator tmpbuf = insertion.begin();
 169         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 170
 171         depth_type max_depth = pars[pit].getMaxDepthAfter();
 172
 173         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 174                 // If we have a negative jump so that the depth would
 175                 // go below 0 depth then we have to redo the delta to
 176                 // this new max depth level so that subsequent
 177                 // paragraphs are aligned correctly to this paragraph
 178                 // at level 0.
 179                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 180                         depth_delta = 0;
 181
 182                 // Set the right depth so that we are not too deep or shallow.
 183                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 184                 if (tmpbuf->params().depth() > max_depth)
 185                         tmpbuf->params().depth(max_depth);
 186
 187                 // Only set this from the 2nd on as the 2nd depends
 188                 // for maxDepth still on pit.
 189                 if (tmpbuf != insertion.begin())
 190                         max_depth = tmpbuf->getMaxDepthAfter();
 191
 192                 // Set the inset owner of this paragraph.
 193                 tmpbuf->setInsetOwner(pars[pit].inInset());
 194                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 195                         // do not track deletion of invalid insets
 196                         if (Inset * inset = tmpbuf->getInset(i))
 197                                 if (!pars[pit].insetAllowed(inset->lyxCode()))
 198                                         tmpbuf->eraseChar(i--, false);
 199                 }
 200
 201                 tmpbuf->setChange(Change(buffer.params().trackChanges ?
 202                                          Change::INSERTED : Change::UNCHANGED));
 203         }
 204
 205         bool const empty = pars[pit].empty();
 206         if (!empty) {
 207                 // Make the buf exactly the same layout as the cursor
 208                 // paragraph.
 209                 insertion.begin()->makeSameLayout(pars[pit]);
 210         }
 211
 212         // Prepare the paragraphs and insets for insertion.
 213         // A couple of insets store buffer references so need updating.
 214         insertion.swap(in.paragraphs());
 215
 216         InsetIterator const i_end = inset_iterator_end(in);
 217
 218         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 219
 220                 it->setBuffer(const_cast<Buffer &>(buffer));
 221
 222                 switch (it->lyxCode()) {
 223
 224                 case LABEL_CODE: {
 225                         // check for duplicates
 226                         InsetCommand & lab = static_cast<InsetCommand &>(*it);
 227                         docstring const oldname = lab.getParam("name");
 228                         lab.update(oldname, false);
 229                         docstring const newname = lab.getParam("name");
 230                         if (oldname != newname) {
 231                                 // adapt the references
 232                                 for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
 233                                         if (itt->lyxCode() == REF_CODE) {
 234                                                 InsetCommand & ref = dynamic_cast<InsetCommand &>(*itt);
 235                                                 if (ref.getParam("reference") == oldname)
 236                                                         ref.setParam("reference", newname);
 237                                         }
 238                                 }
 239                         }
 240                         break;
 241                 }
 242
 243                 default:
 244                         break; // nothing
 245                 }
 246         }
 247         insertion.swap(in.paragraphs());
 248
 249         // Split the paragraph for inserting the buf if necessary.
 250         if (!empty)
 251                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 252
 253         // Paste it!
 254         if (empty) {
 255                 pars.insert(boost::next(pars.begin(), pit),
 256                             insertion.begin(),
 257                             insertion.end());
 258
 259                 // merge the empty par with the last par of the insertion
 260                 mergeParagraph(buffer.params(), pars,
 261                                pit + insertion.size() - 1);
 262         } else {
 263                 pars.insert(boost::next(pars.begin(), pit + 1),
 264                             insertion.begin(),
 265                             insertion.end());
 266
 267                 // merge the first par of the insertion with the current par
 268                 mergeParagraph(buffer.params(), pars, pit);
 269         }
 270
 271         pit_type last_paste = pit + insertion.size() - 1;
 272
 273         // Store the new cursor position.
 274         pit = last_paste;
 275         pos = pars[last_paste].size();
 276
 277         // Join (conditionally) last pasted paragraph with next one, i.e.,
 278         // the tail of the spliced document paragraph
 279         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 280                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 281                         mergeParagraph(buffer.params(), pars, last_paste);
 282                 } else if (pars[last_paste + 1].empty()) {
 283                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 284                         mergeParagraph(buffer.params(), pars, last_paste);
 285                 } else if (pars[last_paste].empty()) {
 286                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 287                         mergeParagraph(buffer.params(), pars, last_paste);
 288                 } else {
 289                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
 290                         ++last_paste;
 291                 }
 292         }
 293
 294         return make_pair(PitPosPair(pit, pos), last_paste + 1);
 295 }
 296
 297
 298 PitPosPair eraseSelectionHelper(BufferParams const & params,
 299         ParagraphList & pars,
 300         pit_type startpit, pit_type endpit,
 301         int startpos, int endpos)
 302 {
 303         // Start of selection is really invalid.
 304         if (startpit == pit_type(pars.size()) ||
 305             (startpos > pars[startpit].size()))
 306                 return PitPosPair(endpit, endpos);
 307
 308         // Start and end is inside same paragraph
 309         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 310                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
 311                 return PitPosPair(endpit, endpos);
 312         }
 313
 314         for (pit_type pit = startpit; pit != endpit + 1;) {
 315                 pos_type const left  = (pit == startpit ? startpos : 0);
 316                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 317                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
 318
 319                 // Logically erase only, including the end-of-paragraph character
 320                 pars[pit].eraseChars(left, right, params.trackChanges);
 321
 322                 // Separate handling of paragraph break:
 323                 if (merge && pit != endpit &&
 324                     (pit + 1 != endpit
 325                      || pars[pit].hasSameLayout(pars[endpit])
 326                      || pars[endpit].size() == endpos)) {
 327                         if (pit + 1 == endpit)
 328                                 endpos += pars[pit].size();
 329                         mergeParagraph(params, pars, pit);
 330                         --endpit;
 331                 } else
 332                         ++pit;
 333         }
 334
 335         // Ensure legal cursor pos:
 336         endpit = startpit;
 337         endpos = startpos;
 338         return PitPosPair(endpit, endpos);
 339 }
 340
 341
 342 void putClipboard(ParagraphList const & paragraphs,
 343         DocumentClass const * const docclass, docstring const & plaintext)
 344 {
 345         // For some strange reason gcc 3.2 and 3.3 do not accept
 346         // Buffer buffer(string(), false);
 347         Buffer buffer("", false);
 348         buffer.setUnnamed(true);
 349         buffer.paragraphs() = paragraphs;
 350         buffer.params().setDocumentClass(docclass);
 351         ostringstream lyx;
 352         if (buffer.write(lyx))
 353                 theClipboard().put(lyx.str(), plaintext);
 354         else
 355                 theClipboard().put(string(), plaintext);
 356 }
 357
 358
 359 void copySelectionHelper(Buffer const & buf, ParagraphList & pars,
 360         pit_type startpit, pit_type endpit,
 361         int start, int end, DocumentClass const * const dc, CutStack & cutstack)
 362 {
 363         BOOST_ASSERT(0 <= start && start <= pars[startpit].size());
 364         BOOST_ASSERT(0 <= end && end <= pars[endpit].size());
 365         BOOST_ASSERT(startpit != endpit || start <= end);
 366
 367         // Clone the paragraphs within the selection.
 368         ParagraphList copy_pars(boost::next(pars.begin(), startpit),
 369                                 boost::next(pars.begin(), endpit + 1));
 370
 371         // Remove the end of the last paragraph; afterwards, remove the
 372         // beginning of the first paragraph. Keep this order - there may only
 373         // be one paragraph!  Do not track deletions here; this is an internal
 374         // action not visible to the user
 375
 376         Paragraph & back = copy_pars.back();
 377         back.eraseChars(end, back.size(), false);
 378         Paragraph & front = copy_pars.front();
 379         front.eraseChars(0, start, false);
 380
 381         ParagraphList::iterator it = copy_pars.begin();
 382         ParagraphList::iterator it_end = copy_pars.end();
 383
 384         for (; it != it_end; it++) {
 385                 // ERT paragraphs have the Language latex_language.
 386                 // This is invalid outside of ERT, so we need to change it
 387                 // to the buffer language.
 388                 if (it->ownerCode() == ERT_CODE || it->ownerCode() == LISTINGS_CODE) {
 389                         it->changeLanguage(buf.params(), latex_language, buf.language());
 390                 }
 391                 it->setInsetOwner(0);
 392         }
 393
 394         // do not copy text (also nested in insets) which is marked as deleted
 395         acceptChanges(copy_pars, buf.params());
 396
 397         DocumentClass * d = const_cast<DocumentClass *>(dc);
 398         cutstack.push(make_pair(copy_pars, d));
 399 }
 400
 401 } // namespace anon
 402
 403
 404
 405
 406 namespace cap {
 407
 408 docstring grabAndEraseSelection(Cursor & cur)
 409 {
 410         if (!cur.selection())
 411                 return docstring();
 412         docstring res = grabSelection(cur);
 413         eraseSelection(cur);
 414         return res;
 415 }
 416
 417
 418 void switchBetweenClasses(DocumentClass const * const oldone,
 419                 DocumentClass const * const newone, InsetText & in, ErrorList & errorlist)
 420 {
 421         errorlist.clear();
 422
 423         BOOST_ASSERT(!in.paragraphs().empty());
 424         if (oldone == newone)
 425                 return;
 426
 427         DocumentClass const & oldtc = *oldone;
 428         DocumentClass const & newtc = *newone;
 429
 430         // layouts
 431         ParIterator end = par_iterator_end(in);
 432         for (ParIterator it = par_iterator_begin(in); it != end; ++it) {
 433                 docstring const name = it->layout()->name();
 434                 bool hasLayout = newtc.hasLayout(name);
 435
 436                 if (in.useEmptyLayout())
 437                         it->setLayout(newtc.emptyLayout());
 438                 else if (hasLayout)
 439                         it->setLayout(newtc[name]);
 440                 else
 441                         it->setLayout(newtc.defaultLayout());
 442
 443                 if (!hasLayout && name != oldtc.defaultLayoutName()) {
 444                         docstring const s = bformat(
 445                                                  _("Layout had to be changed from\n%1$s to %2$s\n"
 446                                                 "because of class conversion from\n%3$s to %4$s"),
 447                          name, it->layout()->name(),
 448                          from_utf8(oldtc.name()), from_utf8(newtc.name()));
 449                         // To warn the user that something had to be done.
 450                         errorlist.push_back(ErrorItem(_("Changed Layout"), s,
 451                                                       it->id(), 0,
 452                                                       it->size()));
 453                 }
 454         }
 455
 456         // character styles
 457         InsetIterator const i_end = inset_iterator_end(in);
 458         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 459                 InsetCollapsable * inset = it->asInsetCollapsable();
 460                 if (!inset)
 461                         continue;
 462                 if (inset->lyxCode() != FLEX_CODE)
 463                         // FIXME: Should we verify all InsetCollapsable?
 464                         continue;
 465                 inset->setLayout(newone);
 466                 if (!inset->undefined())
 467                         continue;
 468                 // The flex inset is undefined in newtc
 469                 docstring const s = bformat(_(
 470                         "Flex inset %1$s is "
 471                         "undefined because of class "
 472                         "conversion from\n%2$s to %3$s"),
 473                         inset->name(), from_utf8(oldtc.name()),
 474                         from_utf8(newtc.name()));
 475                 // To warn the user that something had to be done.
 476                 errorlist.push_back(ErrorItem(
 477                                 _("Undefined flex inset"),
 478                                 s, it.paragraph().id(), it.pos(), it.pos() + 1));
 479         }
 480 }
 481
 482
 483 vector<docstring> availableSelections()
 484 {
 485         vector<docstring> selList;
 486
 487         CutStack::const_iterator cit = theCuts.begin();
 488         CutStack::const_iterator end = theCuts.end();
 489         for (; cit != end; ++cit) {
 490                 // we do not use cit-> here because gcc 2.9x does not
 491                 // like it (JMarc)
 492                 ParagraphList const & pars = (*cit).first;
 493                 docstring asciiSel;
 494                 ParagraphList::const_iterator pit = pars.begin();
 495                 ParagraphList::const_iterator pend = pars.end();
 496                 for (; pit != pend; ++pit) {
 497                         asciiSel += pit->asString(false);
 498                         if (asciiSel.size() > 25) {
 499                                 asciiSel.replace(22, docstring::npos,
 500                                                  from_ascii("..."));
 501                                 break;
 502                         }
 503                 }
 504
 505                 selList.push_back(asciiSel);
 506         }
 507
 508         return selList;
 509 }
 510
 511
 512 size_type numberOfSelections()
 513 {
 514         return theCuts.size();
 515 }
 516
 517
 518 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 519 {
 520         // This doesn't make sense, if there is no selection
 521         if (!cur.selection())
 522                 return;
 523
 524         // OK, we have a selection. This is always between cur.selBegin()
 525         // and cur.selEnd()
 526
 527         if (cur.inTexted()) {
 528                 Text * text = cur.text();
 529                 BOOST_ASSERT(text);
 530
 531                 saveSelection(cur);
 532
 533                 // make sure that the depth behind the selection are restored, too
 534                 cur.recordUndoSelection();
 535                 pit_type begpit = cur.selBegin().pit();
 536                 pit_type endpit = cur.selEnd().pit();
 537
 538                 int endpos = cur.selEnd().pos();
 539
 540                 BufferParams const & bp = cur.buffer().params();
 541                 if (realcut) {
 542                         copySelectionHelper(cur.buffer(),
 543                                 text->paragraphs(),
 544                                 begpit, endpit,
 545                                 cur.selBegin().pos(), endpos,
 546                                 bp.documentClassPtr(), theCuts);
 547                         // Stuff what we got on the clipboard.
 548                         // Even if there is no selection.
 549                         putClipboard(theCuts[0].first, theCuts[0].second,
 550                                 cur.selectionAsString(true));
 551                 }
 552
 553                 boost::tie(endpit, endpos) =
 554                         eraseSelectionHelper(bp,
 555                                 text->paragraphs(),
 556                                 begpit, endpit,
 557                                 cur.selBegin().pos(), endpos);
 558
 559                 // cutSelection can invalidate the cursor so we need to set
 560                 // it anew. (Lgb)
 561                 // we prefer the end for when tracking changes
 562                 cur.pos() = endpos;
 563                 cur.pit() = endpit;
 564
 565                 // sometimes necessary
 566                 if (doclear
 567                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
 568                         cur.fixIfBroken();
 569
 570                 // need a valid cursor. (Lgb)
 571                 cur.clearSelection();
 572                 updateLabels(cur.buffer());
 573
 574                 // tell tabular that a recent copy happened
 575                 dirtyTabularStack(false);
 576         }
 577
 578         if (cur.inMathed()) {
 579                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 580                         // The current selection spans more than one cell.
 581                         // Record all cells
 582                         cur.recordUndoInset();
 583                 } else {
 584                         // Record only the current cell to avoid a jumping
 585                         // cursor after undo
 586                         cur.recordUndo();
 587                 }
 588                 if (realcut)
 589                         copySelection(cur);
 590                 eraseSelection(cur);
 591         }
 592 }
 593
 594
 595 void copySelection(Cursor & cur)
 596 {
 597         copySelection(cur, cur.selectionAsString(true));
 598 }
 599
 600
 601 namespace {
 602
 603 void copySelectionToStack(Cursor & cur, CutStack & cutstack)
 604 {
 605         // this doesn't make sense, if there is no selection
 606         if (!cur.selection())
 607                 return;
 608
 609         // copySelection can not yet handle the case of cross idx selection
 610         if (cur.selBegin().idx() != cur.selEnd().idx())
 611                 return;
 612
 613         if (cur.inTexted()) {
 614                 Text * text = cur.text();
 615                 BOOST_ASSERT(text);
 616                 // ok we have a selection. This is always between cur.selBegin()
 617                 // and sel_end cursor
 618
 619                 // copy behind a space if there is one
 620                 ParagraphList & pars = text->paragraphs();
 621                 pos_type pos = cur.selBegin().pos();
 622                 pit_type par = cur.selBegin().pit();
 623                 while (pos < pars[par].size() &&
 624                        pars[par].isLineSeparator(pos) &&
 625                        (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
 626                         ++pos;
 627
 628                 copySelectionHelper(cur.buffer(), pars, par, cur.selEnd().pit(),
 629                         pos, cur.selEnd().pos(),
 630                         cur.buffer().params().documentClassPtr(), cutstack);
 631                 dirtyTabularStack(false);
 632         }
 633
 634         if (cur.inMathed()) {
 635                 //lyxerr << "copySelection in mathed" << endl;
 636                 ParagraphList pars;
 637                 Paragraph par;
 638                 BufferParams const & bp = cur.buffer().params();
 639                 // FIXME This should be the empty layout...right?
 640                 par.setLayout(bp.documentClass().emptyLayout());
 641                 par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
 642                 pars.push_back(par);
 643                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
 644         }
 645 }
 646
 647 }
 648
 649
 650 void copySelectionToStack()
 651 {
 652         if (!selectionBuffer.empty())
 653                 theCuts.push(selectionBuffer[0]);
 654 }
 655
 656
 657 void copySelection(Cursor & cur, docstring const & plaintext)
 658 {
 659         // In tablemode, because copy and paste actually use special table stack
 660         // we do not attempt to get selected paragraphs under cursor. Instead, a
 661         // paragraph with the plain text version is generated so that table cells
 662         // can be pasted as pure text somewhere else.
 663         if (cur.selBegin().idx() != cur.selEnd().idx()) {
 664                 ParagraphList pars;
 665                 Paragraph par;
 666                 BufferParams const & bp = cur.buffer().params();
 667                 par.setLayout(bp.documentClass().emptyLayout());
 668                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
 669                 pars.push_back(par);
 670                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
 671         } else {
 672                 copySelectionToStack(cur, theCuts);
 673         }
 674
 675         // stuff the selection onto the X clipboard, from an explicit copy request
 676         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
 677 }
 678
 679
 680 void saveSelection(Cursor & cur)
 681 {
 682         // This function is called, not when a selection is formed, but when
 683         // a selection is cleared. Therefore, multiple keyboard selection
 684         // will not repeatively trigger this function (bug 3877).
 685         if (cur.selection()
 686             && cur.selBegin() == cur.bv().cursor().selBegin()
 687             && cur.selEnd() == cur.bv().cursor().selEnd()) {
 688                 LYXERR(Debug::ACTION, "'" << cur.selectionAsString(true) << "'");
 689                 copySelectionToStack(cur, selectionBuffer);
 690         }
 691 }
 692
 693
 694 bool selection()
 695 {
 696         return !selectionBuffer.empty();
 697 }
 698
 699
 700 void clearSelection()
 701 {
 702         selectionBuffer.clear();
 703 }
 704
 705
 706 void clearCutStack()
 707 {
 708         theCuts.clear();
 709 }
 710
 711
 712 docstring selection(size_t sel_index)
 713 {
 714         return sel_index < theCuts.size()
 715                 ? theCuts[sel_index].first.back().asString(false)
 716                 : docstring();
 717 }
 718
 719
 720 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
 721                         DocumentClass const * const docclass, ErrorList & errorList)
 722 {
 723         if (cur.inTexted()) {
 724                 Text * text = cur.text();
 725                 BOOST_ASSERT(text);
 726
 727                 pit_type endpit;
 728                 PitPosPair ppp;
 729
 730                 boost::tie(ppp, endpit) =
 731                         pasteSelectionHelper(cur, parlist, docclass, errorList);
 732                 updateLabels(cur.buffer());
 733                 cur.clearSelection();
 734                 text->setCursor(cur, ppp.first, ppp.second);
 735         }
 736
 737         // mathed is handled in InsetMathNest/InsetMathGrid
 738         BOOST_ASSERT(!cur.inMathed());
 739 }
 740
 741
 742 void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
 743 {
 744         // this does not make sense, if there is nothing to paste
 745         if (!checkPastePossible(sel_index))
 746                 return;
 747
 748         cur.recordUndo();
 749         pasteParagraphList(cur, theCuts[sel_index].first,
 750                            theCuts[sel_index].second, errorList);
 751         cur.setSelection();
 752 }
 753
 754
 755 void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs)
 756 {
 757         // Use internal clipboard if it is the most recent one
 758         if (theClipboard().isInternal()) {
 759                 pasteFromStack(cur, errorList, 0);
 760                 return;
 761         }
 762
 763         // First try LyX format
 764         if (theClipboard().hasLyXContents()) {
 765                 string lyx = theClipboard().getAsLyX();
 766                 if (!lyx.empty()) {
 767                         // For some strange reason gcc 3.2 and 3.3 do not accept
 768                         // Buffer buffer(string(), false);
 769                         Buffer buffer("", false);
 770                         buffer.setUnnamed(true);
 771                         if (buffer.readString(lyx)) {
 772                                 cur.recordUndo();
 773                                 pasteParagraphList(cur, buffer.paragraphs(),
 774                                         buffer.params().documentClassPtr(), errorList);
 775                                 cur.setSelection();
 776                                 return;
 777                         }
 778                 }
 779         }
 780
 781         // Then try plain text
 782         docstring const text = theClipboard().getAsText();
 783         if (text.empty())
 784                 return;
 785         cur.recordUndo();
 786         if (asParagraphs)
 787                 cur.text()->insertStringAsParagraphs(cur, text);
 788         else
 789                 cur.text()->insertStringAsLines(cur, text);
 790 }
 791
 792
 793 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
 794                             Clipboard::GraphicsType preferedType)
 795 {
 796         BOOST_ASSERT(theClipboard().hasGraphicsContents(preferedType));
 797
 798         // get picture from clipboard
 799         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
 800         if (filename.empty())
 801                 return;
 802
 803         // create inset for graphic
 804         InsetGraphics * inset = new InsetGraphics;
 805         InsetGraphicsParams params;
 806         params.filename = EmbeddedFile(filename.absFilename(), cur.buffer().filePath());
 807         inset->setParams(params);
 808         cur.recordUndo();
 809         cur.insert(inset);
 810 }
 811
 812
 813 void pasteSelection(Cursor & cur, ErrorList & errorList)
 814 {
 815         if (selectionBuffer.empty())
 816                 return;
 817         cur.recordUndo();
 818         pasteParagraphList(cur, selectionBuffer[0].first,
 819                            selectionBuffer[0].second, errorList);
 820 }
 821
 822
 823 void replaceSelectionWithString(Cursor & cur, docstring const & str, bool backwards)
 824 {
 825         cur.recordUndo();
 826         DocIterator selbeg = cur.selectionBegin();
 827
 828         // Get font setting before we cut
 829         Font const font =
 830                 selbeg.paragraph().getFontSettings(cur.buffer().params(), selbeg.pos());
 831
 832         // Insert the new string
 833         pos_type pos = cur.selEnd().pos();
 834         Paragraph & par = cur.selEnd().paragraph();
 835         docstring::const_iterator cit = str.begin();
 836         docstring::const_iterator end = str.end();
 837         for (; cit != end; ++cit, ++pos)
 838                 par.insertChar(pos, *cit, font, cur.buffer().params().trackChanges);
 839
 840         // Cut the selection
 841         cutSelection(cur, true, false);
 842
 843         // select the replacement
 844         if (backwards) {
 845                 selbeg.pos() += str.length();
 846                 cur.setSelection(selbeg, -int(str.length()));
 847         } else
 848                 cur.setSelection(selbeg, str.length());
 849 }
 850
 851
 852 void replaceSelection(Cursor & cur)
 853 {
 854         if (cur.selection())
 855                 cutSelection(cur, true, false);
 856 }
 857
 858
 859 void eraseSelection(Cursor & cur)
 860 {
 861         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
 862         CursorSlice const & i1 = cur.selBegin();
 863         CursorSlice const & i2 = cur.selEnd();
 864         if (i1.inset().asInsetMath()) {
 865                 saveSelection(cur);
 866                 cur.top() = i1;
 867                 if (i1.idx() == i2.idx()) {
 868                         i1.cell().erase(i1.pos(), i2.pos());
 869                         // We may have deleted i1.cell(cur.pos()).
 870                         // Make sure that pos is valid.
 871                         if (cur.pos() > cur.lastpos())
 872                                 cur.pos() = cur.lastpos();
 873                 } else {
 874                         InsetMath * p = i1.asInsetMath();
 875                         Inset::row_type r1, r2;
 876                         Inset::col_type c1, c2;
 877                         region(i1, i2, r1, r2, c1, c2);
 878                         for (Inset::row_type row = r1; row <= r2; ++row)
 879                                 for (Inset::col_type col = c1; col <= c2; ++col)
 880                                         p->cell(p->index(row, col)).clear();
 881                         // We've deleted the whole cell. Only pos 0 is valid.
 882                         cur.pos() = 0;
 883                 }
 884                 // need a valid cursor. (Lgb)
 885                 cur.clearSelection();
 886         } else {
 887                 lyxerr << "can't erase this selection 1" << endl;
 888         }
 889         //lyxerr << "cap::eraseSelection end: " << cur << endl;
 890 }
 891
 892
 893 void selDel(Cursor & cur)
 894 {
 895         //lyxerr << "cap::selDel" << endl;
 896         if (cur.selection())
 897                 eraseSelection(cur);
 898 }
 899
 900
 901 void selClearOrDel(Cursor & cur)
 902 {
 903         //lyxerr << "cap::selClearOrDel" << endl;
 904         if (lyxrc.auto_region_delete)
 905                 selDel(cur);
 906         else
 907                 cur.selection() = false;
 908 }
 909
 910
 911 docstring grabSelection(Cursor const & cur)
 912 {
 913         if (!cur.selection())
 914                 return docstring();
 915
 916         // FIXME: What is wrong with the following?
 917 #if 0
 918         ostringstream os;
 919         for (DocIterator dit = cur.selectionBegin();
 920              dit != cur.selectionEnd(); dit.forwardPos())
 921                 os << asString(dit.cell());
 922         return os.str();
 923 #endif
 924
 925         CursorSlice i1 = cur.selBegin();
 926         CursorSlice i2 = cur.selEnd();
 927
 928         if (i1.idx() == i2.idx()) {
 929                 if (i1.inset().asInsetMath()) {
 930                         MathData::const_iterator it = i1.cell().begin();
 931                         return asString(MathData(it + i1.pos(), it + i2.pos()));
 932                 } else {
 933                         return from_ascii("unknown selection 1");
 934                 }
 935         }
 936
 937         Inset::row_type r1, r2;
 938         Inset::col_type c1, c2;
 939         region(i1, i2, r1, r2, c1, c2);
 940
 941         docstring data;
 942         if (i1.inset().asInsetMath()) {
 943                 for (Inset::row_type row = r1; row <= r2; ++row) {
 944                         if (row > r1)
 945                                 data += "\\\\";
 946                         for (Inset::col_type col = c1; col <= c2; ++col) {
 947                                 if (col > c1)
 948                                         data += '&';
 949                                 data += asString(i1.asInsetMath()->
 950                                         cell(i1.asInsetMath()->index(row, col)));
 951                         }
 952                 }
 953         } else {
 954                 data = from_ascii("unknown selection 2");
 955         }
 956         return data;
 957 }
 958
 959
 960 void dirtyTabularStack(bool b)
 961 {
 962         dirty_tabular_stack_ = b;
 963 }
 964
 965
 966 bool tabularStackDirty()
 967 {
 968         return dirty_tabular_stack_;
 969 }
 970
 971
 972 } // namespace cap
 973
 974 } // namespace lyx