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 "BranchList.h"
  19 #include "Buffer.h"
  20 #include "buffer_funcs.h"
  21 #include "BufferList.h"
  22 #include "BufferParams.h"
  23 #include "BufferView.h"
  24 #include "Changes.h"
  25 #include "Cursor.h"
  26 #include "Encoding.h"
  27 #include "ErrorList.h"
  28 #include "FuncCode.h"
  29 #include "FuncRequest.h"
  30 #include "InsetIterator.h"
  31 #include "InsetList.h"
  32 #include "Language.h"
  33 #include "LyX.h"
  34 #include "LyXRC.h"
  35 #include "Text.h"
  36 #include "Paragraph.h"
  37 #include "ParagraphParameters.h"
  38 #include "ParIterator.h"
  39 #include "TextClass.h"
  40
  41 #include "insets/InsetBibitem.h"
  42 #include "insets/InsetBranch.h"
  43 #include "insets/InsetCitation.h"
  44 #include "insets/InsetCommand.h"
  45 #include "insets/InsetFlex.h"
  46 #include "insets/InsetGraphics.h"
  47 #include "insets/InsetGraphicsParams.h"
  48 #include "insets/InsetInclude.h"
  49 #include "insets/InsetLabel.h"
  50 #include "insets/InsetTabular.h"
  51
  52 #include "mathed/MathData.h"
  53 #include "mathed/InsetMath.h"
  54 #include "mathed/InsetMathHull.h"
  55 #include "mathed/InsetMathRef.h"
  56 #include "mathed/MathSupport.h"
  57
  58 #include "support/debug.h"
  59 #include "support/docstream.h"
  60 #include "support/gettext.h"
  61 #include "support/lassert.h"
  62 #include "support/limited_stack.h"
  63 #include "support/lstrings.h"
  64 #include "support/lyxalgo.h"
  65 #include "support/TempFile.h"
  66 #include "support/unique_ptr.h"
  67
  68 #include "frontends/alert.h"
  69 #include "frontends/Clipboard.h"
  70 #include "frontends/Selection.h"
  71
  72 #include <string>
  73 #include <tuple>
  74
  75 using namespace std;
  76 using namespace lyx::support;
  77 using lyx::frontend::Clipboard;
  78
  79 namespace lyx {
  80
  81 namespace {
  82
  83 typedef pair<pit_type, int> PitPosPair;
  84
  85 typedef limited_stack<pair<ParagraphList, DocumentClassConstPtr> > CutStack;
  86
  87 CutStack theCuts(10);
  88 // persistent selection, cleared until the next selection
  89 CutStack selectionBuffer(1);
  90 // temporary scratch area
  91 CutStack tempCut(1);
  92
  93 // store whether the tabular stack is newer than the normal copy stack
  94 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
  95 // when we (hopefully) have a one-for-all paste mechanism.
  96 bool dirty_tabular_stack_ = false;
  97
  98
  99 bool checkPastePossible(int index)
 100 {
 101         return size_t(index) < theCuts.size() && !theCuts[index].first.empty();
 102 }
 103
 104
 105 struct PasteReturnValue {
 106         PasteReturnValue(pit_type r_pit, pos_type r_pos, bool r_nu) :
 107           pit(r_pit), pos(r_pos), needupdate(r_nu)
 108         {}
 109
 110         pit_type pit;
 111         pos_type pos;
 112         bool needupdate;
 113 };
 114
 115 PasteReturnValue
 116 pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
 117                      DocumentClassConstPtr oldDocClass, cap::BranchAction branchAction,
 118                      ErrorList & errorlist)
 119 {
 120         Buffer const & buffer = *cur.buffer();
 121         pit_type pit = cur.pit();
 122         pos_type pos = cur.pos();
 123         bool need_update = false;
 124
 125         if (parlist.empty())
 126                 return PasteReturnValue(pit, pos, need_update);
 127
 128         InsetText * target_inset = cur.inset().asInsetText();
 129         if (!target_inset) {
 130                 InsetTabular * it = cur.inset().asInsetTabular();
 131                 target_inset = it ? it->cell(cur.idx())->asInsetText() : 0;
 132         }
 133         LASSERT(target_inset, return PasteReturnValue(pit, pos, need_update));
 134
 135         ParagraphList & pars = target_inset->paragraphs();
 136         LASSERT(pos <= pars[pit].size(),
 137                         return PasteReturnValue(pit, pos, need_update));
 138
 139         // Make a copy of the CaP paragraphs.
 140         ParagraphList insertion = parlist;
 141
 142         // Now remove all out of the pars which is NOT allowed in the
 143         // new environment and set also another font if that is required.
 144
 145         // Convert newline to paragraph break in ParbreakIsNewline
 146         if (target_inset->getLayout().parbreakIsNewline()
 147             || pars[pit].layout().parbreak_is_newline) {
 148                 for (size_t i = 0; i != insertion.size(); ++i) {
 149                         for (pos_type j = 0; j != insertion[i].size(); ++j) {
 150                                 if (insertion[i].isNewline(j)) {
 151                                         // do not track deletion of newline
 152                                         insertion[i].eraseChar(j, false);
 153                                         insertion[i].setInsetOwner(target_inset);
 154                                         breakParagraphConservative(
 155                                                         buffer.params(),
 156                                                         insertion, i, j);
 157                                         break;
 158                                 }
 159                         }
 160                 }
 161         }
 162
 163         // Prevent to paste uncodable characters in verbatim and ERT.
 164         // The encoding is inherited from the context here.
 165         docstring uncodable_content;
 166         if (target_inset->getLayout().isPassThru() && cur.getEncoding()) {
 167                 odocstringstream res;
 168                 Encoding const * e = cur.getEncoding();
 169                 for (size_t i = 0; i != insertion.size(); ++i) {
 170                         pos_type end = insertion[i].size();
 171                         for (pos_type j = 0; j != end; ++j) {
 172                                 // skip insets
 173                                 if (insertion[i].isInset(j))
 174                                         continue;
 175                                 char_type const c = insertion[i].getChar(j);
 176                                 if (!e->encodable(c)) {
 177                                         // do not track deletion
 178                                         res.put(c);
 179                                         insertion[i].eraseChar(j, false);
 180                                         --end;
 181                                         --j;
 182                                 }
 183                         }
 184                 }
 185                 docstring const uncodable = res.str();
 186                 if (!uncodable.empty()) {
 187                         if (uncodable.size() == 1)
 188                                 uncodable_content = bformat(_("The character \"%1$s\" is uncodable in this verbatim context "
 189                                                       "and thus has not been pasted."),
 190                                                     uncodable);
 191                         else
 192                                 uncodable_content = bformat(_("The characters \"%1$s\" are uncodable in this verbatim context "
 193                                                       "and thus have not been pasted."),
 194                                                     uncodable);
 195                 }
 196         }
 197
 198         // set the paragraphs to plain layout if necessary
 199         DocumentClassConstPtr newDocClass = buffer.params().documentClassPtr();
 200         if (cur.inset().usePlainLayout()) {
 201                 bool forcePlainLayout = target_inset->forcePlainLayout();
 202                 Layout const & plainLayout = newDocClass->plainLayout();
 203                 Layout const & defaultLayout = newDocClass->defaultLayout();
 204                 ParagraphList::iterator const end = insertion.end();
 205                 ParagraphList::iterator par = insertion.begin();
 206                 for (; par != end; ++par) {
 207                         Layout const & parLayout = par->layout();
 208                         if (forcePlainLayout || parLayout == defaultLayout)
 209                                 par->setLayout(plainLayout);
 210                 }
 211         } else {
 212                 // check if we need to reset from plain layout
 213                 Layout const & defaultLayout = newDocClass->defaultLayout();
 214                 Layout const & plainLayout = newDocClass->plainLayout();
 215                 ParagraphList::iterator const end = insertion.end();
 216                 ParagraphList::iterator par = insertion.begin();
 217                 for (; par != end; ++par) {
 218                         Layout const & parLayout = par->layout();
 219                         if (parLayout == plainLayout)
 220                                 par->setLayout(defaultLayout);
 221                 }
 222         }
 223
 224         InsetText in(cur.buffer());
 225         // Make sure there is no class difference.
 226         in.paragraphs().clear();
 227         // This works without copying any paragraph data because we have
 228         // a specialized swap method for ParagraphList. This is important
 229         // since we store pointers to insets at some places and we don't
 230         // want to invalidate them.
 231         insertion.swap(in.paragraphs());
 232         cap::switchBetweenClasses(oldDocClass, newDocClass, in, errorlist);
 233         // Do this here since switchBetweenClasses clears the errorlist
 234         if (!uncodable_content.empty())
 235                 errorlist.push_back(ErrorItem(_("Uncodable content"), uncodable_content));
 236         insertion.swap(in.paragraphs());
 237
 238         ParagraphList::iterator tmpbuf = insertion.begin();
 239         int depth_delta = pars[pit].params().depth() - tmpbuf->params().depth();
 240
 241         depth_type max_depth = pars[pit].getMaxDepthAfter();
 242
 243         for (; tmpbuf != insertion.end(); ++tmpbuf) {
 244                 // If we have a negative jump so that the depth would
 245                 // go below 0 depth then we have to redo the delta to
 246                 // this new max depth level so that subsequent
 247                 // paragraphs are aligned correctly to this paragraph
 248                 // at level 0.
 249                 if (int(tmpbuf->params().depth()) + depth_delta < 0)
 250                         depth_delta = 0;
 251
 252                 // Set the right depth so that we are not too deep or shallow.
 253                 tmpbuf->params().depth(tmpbuf->params().depth() + depth_delta);
 254                 if (tmpbuf->params().depth() > max_depth)
 255                         tmpbuf->params().depth(max_depth);
 256
 257                 // Set max_depth for the next paragraph
 258                 max_depth = tmpbuf->getMaxDepthAfter();
 259
 260                 // Set the inset owner of this paragraph.
 261                 tmpbuf->setInsetOwner(target_inset);
 262                 for (pos_type i = 0; i < tmpbuf->size(); ++i) {
 263                         // do not track deletion of invalid insets
 264                         if (Inset * inset = tmpbuf->getInset(i))
 265                                 if (!target_inset->insetAllowed(inset->lyxCode()))
 266                                         tmpbuf->eraseChar(i--, false);
 267                 }
 268
 269                 tmpbuf->setChange(Change(buffer.params().track_changes ?
 270                                          Change::INSERTED : Change::UNCHANGED));
 271         }
 272
 273         bool const empty = pars[pit].empty();
 274         if (!empty) {
 275                 // Make the buf exactly the same layout as the cursor
 276                 // paragraph.
 277                 insertion.begin()->makeSameLayout(pars[pit]);
 278         }
 279
 280         // Prepare the paragraphs and insets for insertion.
 281         insertion.swap(in.paragraphs());
 282
 283         InsetIterator const i_end = inset_iterator_end(in);
 284         for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
 285                 // Even though this will also be done later, it has to be done here
 286                 // since some inset might going to try to access
 287                 // the buffer() member.
 288                 it->setBuffer(const_cast<Buffer &>(buffer));
 289                 switch (it->lyxCode()) {
 290
 291                 case MATH_HULL_CODE: {
 292                         // check for equation labels and resolve duplicates
 293                         InsetMathHull * ins = it->asInsetMath()->asHullInset();
 294                         std::vector<InsetLabel *> labels = ins->getLabels();
 295                         for (size_t i = 0; i != labels.size(); ++i) {
 296                                 if (!labels[i])
 297                                         continue;
 298                                 InsetLabel * lab = labels[i];
 299                                 docstring const oldname = lab->getParam("name");
 300                                 lab->updateLabel(oldname);
 301                                 // We need to update the buffer reference cache.
 302                                 need_update = true;
 303                                 docstring const newname = lab->getParam("name");
 304                                 if (oldname == newname)
 305                                         continue;
 306                                 // adapt the references
 307                                 for (InsetIterator itt = inset_iterator_begin(in);
 308                                       itt != i_end; ++itt) {
 309                                         if (itt->lyxCode() == REF_CODE) {
 310                                                 InsetCommand * ref = itt->asInsetCommand();
 311                                                 if (ref->getParam("reference") == oldname)
 312                                                         ref->setParam("reference", newname);
 313                                         } else if (itt->lyxCode() == MATH_REF_CODE) {
 314                                                 InsetMathRef * mi = itt->asInsetMath()->asRefInset();
 315                                                 // this is necessary to prevent an uninitialized
 316                                                 // buffer when the RefInset is in a MathBox.
 317                                                 // FIXME audit setBuffer calls
 318                                                 mi->setBuffer(const_cast<Buffer &>(buffer));
 319                                                 if (mi->getTarget() == oldname)
 320                                                         mi->changeTarget(newname);
 321                                         }
 322                                 }
 323                         }
 324                         break;
 325                 }
 326
 327                 case LABEL_CODE: {
 328                         // check for duplicates
 329                         InsetLabel & lab = static_cast<InsetLabel &>(*it);
 330                         docstring const oldname = lab.getParam("name");
 331                         lab.updateLabel(oldname);
 332                         // We need to update the buffer reference cache.
 333                         need_update = true;
 334                         docstring const newname = lab.getParam("name");
 335                         if (oldname == newname)
 336                                 break;
 337                         // adapt the references
 338                         for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
 339                                 if (itt->lyxCode() == REF_CODE) {
 340                                         InsetCommand & ref = static_cast<InsetCommand &>(*itt);
 341                                         if (ref.getParam("reference") == oldname)
 342                                                 ref.setParam("reference", newname);
 343                                 } else if (itt->lyxCode() == MATH_REF_CODE) {
 344                                         InsetMathRef * mi = itt->asInsetMath()->asRefInset();
 345                                         // this is necessary to prevent an uninitialized
 346                                         // buffer when the RefInset is in a MathBox.
 347                                         // FIXME audit setBuffer calls
 348                                         mi->setBuffer(const_cast<Buffer &>(buffer));
 349                                         if (mi->getTarget() == oldname)
 350                                                 mi->changeTarget(newname);
 351                                 }
 352                         }
 353                         break;
 354                 }
 355
 356                 case INCLUDE_CODE: {
 357                         InsetInclude & inc = static_cast<InsetInclude &>(*it);
 358                         inc.updateCommand();
 359                         // We need to update the list of included files.
 360                         need_update = true;
 361                         break;
 362                 }
 363
 364                 case CITE_CODE: {
 365                         InsetCitation & cit = static_cast<InsetCitation &>(*it);
 366                         // This actually only needs to be done if the cite engine
 367                         // differs, but we do it in general.
 368                         cit.redoLabel();
 369                         // We need to update the list of citations.
 370                         need_update = true;
 371                         break;
 372                 }
 373
 374                 case BIBITEM_CODE: {
 375                         // check for duplicates
 376                         InsetBibitem & bib = static_cast<InsetBibitem &>(*it);
 377                         docstring const oldkey = bib.getParam("key");
 378                         bib.updateCommand(oldkey, false);
 379                         // We need to update the buffer reference cache.
 380                         need_update = true;
 381                         docstring const newkey = bib.getParam("key");
 382                         if (oldkey == newkey)
 383                                 break;
 384                         // adapt the references
 385                         for (InsetIterator itt = inset_iterator_begin(in);
 386                              itt != i_end; ++itt) {
 387                                 if (itt->lyxCode() == CITE_CODE) {
 388                                         InsetCommand * ref = itt->asInsetCommand();
 389                                         if (ref->getParam("key") == oldkey)
 390                                                 ref->setParam("key", newkey);
 391                                 }
 392                         }
 393                         break;
 394                 }
 395
 396                 case BRANCH_CODE: {
 397                         // check if branch is known to target buffer
 398                         // or its master
 399                         InsetBranch & br = static_cast<InsetBranch &>(*it);
 400                         docstring const name = br.branch();
 401                         if (name.empty())
 402                                 break;
 403                         bool const is_child = (&buffer != buffer.masterBuffer());
 404                         BranchList branchlist = buffer.params().branchlist();
 405                         if ((!is_child && branchlist.find(name))
 406                             || (is_child && (branchlist.find(name)
 407                                 || buffer.masterBuffer()->params().branchlist().find(name))))
 408                                 break;
 409                         switch(branchAction) {
 410                         case cap::BRANCH_ADD: {
 411                                 // This is for a temporary buffer, so simply create the branch.
 412                                 // Must not use lyx::dispatch(), since tmpbuffer has no view.
 413                                 DispatchResult dr;
 414                                 const_cast<Buffer&>(buffer).dispatch(FuncRequest(LFUN_BRANCH_ADD, name), dr);
 415                                 break;
 416                         }
 417                         case cap::BRANCH_ASK: {
 418                                 docstring text = bformat(
 419                                         _("The pasted branch \"%1$s\" is undefined.\n"
 420                                           "Do you want to add it to the document's branch list?"),
 421                                         name);
 422                                 if (frontend::Alert::prompt(_("Unknown branch"),
 423                                           text, 0, 1, _("&Add"), _("&Don't Add")) != 0)
 424                                         break;
 425                                 lyx::dispatch(FuncRequest(LFUN_BRANCH_ADD, name));
 426                                 break;
 427                         }
 428                         case cap::BRANCH_IGNORE:
 429                                 break;
 430                         }
 431                         // We need to update the list of branches.
 432                         need_update = true;
 433                         break;
 434                 }
 435
 436                 default:
 437                         break; // nothing
 438                 }
 439         }
 440         insertion.swap(in.paragraphs());
 441
 442         // Split the paragraph for inserting the buf if necessary.
 443         if (!empty)
 444                 breakParagraphConservative(buffer.params(), pars, pit, pos);
 445
 446         // Paste it!
 447         if (empty) {
 448                 pars.insert(lyx::next(pars.begin(), pit),
 449                             insertion.begin(),
 450                             insertion.end());
 451
 452                 // merge the empty par with the last par of the insertion
 453                 mergeParagraph(buffer.params(), pars,
 454                                pit + insertion.size() - 1);
 455         } else {
 456                 pars.insert(lyx::next(pars.begin(), pit + 1),
 457                             insertion.begin(),
 458                             insertion.end());
 459
 460                 // merge the first par of the insertion with the current par
 461                 mergeParagraph(buffer.params(), pars, pit);
 462         }
 463
 464         // Store the new cursor position.
 465         pit_type last_paste = pit + insertion.size() - 1;
 466         pit_type startpit = pit;
 467         pit = last_paste;
 468         pos = pars[last_paste].size();
 469
 470         // FIXME Should we do it here, or should we let updateBuffer() do it?
 471         // Set paragraph buffers. It's important to do this right away
 472         // before something calls Inset::buffer() and causes a crash.
 473         for (pit_type p = startpit; p <= pit; ++p)
 474                 pars[p].setInsetBuffers(const_cast<Buffer &>(buffer));
 475
 476         // Join (conditionally) last pasted paragraph with next one, i.e.,
 477         // the tail of the spliced document paragraph
 478         if (!empty && last_paste + 1 != pit_type(pars.size())) {
 479                 if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
 480                         mergeParagraph(buffer.params(), pars, last_paste);
 481                 } else if (pars[last_paste + 1].empty()) {
 482                         pars[last_paste + 1].makeSameLayout(pars[last_paste]);
 483                         mergeParagraph(buffer.params(), pars, last_paste);
 484                 } else if (pars[last_paste].empty()) {
 485                         pars[last_paste].makeSameLayout(pars[last_paste + 1]);
 486                         mergeParagraph(buffer.params(), pars, last_paste);
 487                 } else {
 488                         pars[last_paste + 1].stripLeadingSpaces(buffer.params().track_changes);
 489                         ++last_paste;
 490                 }
 491         }
 492
 493         return PasteReturnValue(pit, pos, need_update);
 494 }
 495
 496
 497 PitPosPair eraseSelectionHelper(BufferParams const & params,
 498         ParagraphList & pars,
 499         pit_type startpit, pit_type endpit,
 500         int startpos, int endpos)
 501 {
 502         // Start of selection is really invalid.
 503         if (startpit == pit_type(pars.size()) ||
 504             (startpos > pars[startpit].size()))
 505                 return PitPosPair(endpit, endpos);
 506
 507         // Start and end is inside same paragraph
 508         if (endpit == pit_type(pars.size()) || startpit == endpit) {
 509                 endpos -= pars[startpit].eraseChars(startpos, endpos, params.track_changes);
 510                 return PitPosPair(endpit, endpos);
 511         }
 512
 513         for (pit_type pit = startpit; pit != endpit + 1;) {
 514                 pos_type const left  = (pit == startpit ? startpos : 0);
 515                 pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
 516                 bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.track_changes);
 517
 518                 // Logically erase only, including the end-of-paragraph character
 519                 pars[pit].eraseChars(left, right, params.track_changes);
 520
 521                 // Separate handling of paragraph break:
 522                 if (merge && pit != endpit &&
 523                     (pit + 1 != endpit
 524                      || pars[pit].hasSameLayout(pars[endpit])
 525                      || pars[endpit].size() == endpos)) {
 526                         if (pit + 1 == endpit)
 527                                 endpos += pars[pit].size();
 528                         mergeParagraph(params, pars, pit);
 529                         --endpit;
 530                 } else
 531                         ++pit;
 532         }
 533
 534         // Ensure legal cursor pos:
 535         endpit = startpit;
 536         endpos = startpos;
 537         return PitPosPair(endpit, endpos);
 538 }
 539
 540
 541 Buffer * copyToTempBuffer(ParagraphList const & paragraphs, DocumentClassConstPtr docclass)
 542 {
 543         // This used to need to be static to avoid a memory leak. It no longer needs
 544         // to be so, but the alternative is to construct a new one of these (with a
 545         // new temporary directory, etc) every time, and then to destroy it. So maybe
 546         // it's worth just keeping this one around.
 547         static TempFile tempfile("clipboard.internal");
 548         tempfile.setAutoRemove(false);
 549         // The initialization of staticbuffer is thread-safe. Using a lambda
 550         // guarantees that the properties are set only once.
 551         static Buffer * staticbuffer = [&](){
 552                 Buffer * b =
 553                         theBufferList().newInternalBuffer(tempfile.name().absFileName());
 554                 b->setUnnamed(true);
 555                 b->inset().setBuffer(*b);
 556                 //initialize staticbuffer with b
 557                 return b;
 558         }();
 559         // Use a clone for the complicated stuff so that we do not need to clean
 560         // up in order to avoid a crash.
 561         Buffer * buffer = staticbuffer->cloneBufferOnly();
 562         LASSERT(buffer, return 0);
 563
 564         // This needs doing every time.
 565         // Since setDocumentClass() causes deletion of the old document class
 566         // we need to reset all layout pointers in paragraphs (otherwise they
 567         // would be dangling).
 568         ParIterator const end = buffer->par_iterator_end();
 569         for (ParIterator it = buffer->par_iterator_begin(); it != end; ++it) {
 570                 docstring const name = it->layout().name();
 571                 if (docclass->hasLayout(name))
 572                         it->setLayout((*docclass)[name]);
 573                 else
 574                         it->setPlainOrDefaultLayout(*docclass);
 575         }
 576         buffer->params().setDocumentClass(docclass);
 577
 578         // we will use pasteSelectionHelper to copy the paragraphs into the
 579         // temporary Buffer, since it does a lot of things to fix them up.
 580         DocIterator dit = doc_iterator_begin(buffer, &buffer->inset());
 581         ErrorList el;
 582         pasteSelectionHelper(dit, paragraphs, docclass, cap::BRANCH_ADD, el);
 583
 584         return buffer;
 585 }
 586
 587
 588 void putClipboard(ParagraphList const & paragraphs,
 589         DocumentClassConstPtr docclass, docstring const & plaintext)
 590 {
 591         Buffer * buffer = copyToTempBuffer(paragraphs, docclass);
 592         if (!buffer) // already asserted in copyToTempBuffer()
 593                 return;
 594
 595         // We don't want to produce images that are not used. Therefore,
 596         // output formulas as MathML. Even if this is not understood by all
 597         // applications, the number that can parse it should go up in the future.
 598         buffer->params().html_math_output = BufferParams::MathML;
 599
 600         // Make sure MarkAsExporting is deleted before buffer is
 601         {
 602                 // The Buffer is being used to export. This is necessary so that the
 603                 // updateMacros call will record the needed information.
 604                 MarkAsExporting mex(buffer);
 605
 606                 buffer->updateBuffer(Buffer::UpdateMaster, OutputUpdate);
 607                 buffer->updateMacros();
 608                 buffer->updateMacroInstances(OutputUpdate);
 609
 610                 // LyX's own format
 611                 string lyx;
 612                 ostringstream oslyx;
 613                 if (buffer->write(oslyx))
 614                         lyx = oslyx.str();
 615
 616                 // XHTML format
 617                 odocstringstream oshtml;
 618                 OutputParams runparams(encodings.fromLyXName("utf8"));
 619                 // We do not need to produce images, etc.
 620                 runparams.dryrun = true;
 621                 // We are not interested in errors (bug 8866)
 622                 runparams.silent = true;
 623                 buffer->writeLyXHTMLSource(oshtml, runparams, Buffer::FullSource);
 624
 625                 theClipboard().put(lyx, oshtml.str(), plaintext);
 626         }
 627
 628         // Save that memory
 629         delete buffer;
 630 }
 631
 632
 633 /// return true if the whole ParagraphList is deleted
 634 static bool isFullyDeleted(ParagraphList const & pars)
 635 {
 636         pit_type const pars_size = static_cast<pit_type>(pars.size());
 637
 638         // check all paragraphs
 639         for (pit_type pit = 0; pit < pars_size; ++pit) {
 640                 if (!pars[pit].empty())   // prevent assertion failure
 641                         if (!pars[pit].isDeleted(0, pars[pit].size()))
 642                                 return false;
 643         }
 644         return true;
 645 }
 646
 647
 648 void copySelectionHelper(Buffer const & buf, Text const & text,
 649         pit_type startpit, pit_type endpit,
 650         int start, int end, DocumentClassConstPtr dc, CutStack & cutstack)
 651 {
 652         ParagraphList const & pars = text.paragraphs();
 653
 654         // In most of these cases, we can try to recover.
 655         LASSERT(0 <= start, start = 0);
 656         LASSERT(start <= pars[startpit].size(), start = pars[startpit].size());
 657         LASSERT(0 <= end, end = 0);
 658         LASSERT(end <= pars[endpit].size(), end = pars[endpit].size());
 659         LASSERT(startpit != endpit || start <= end, return);
 660
 661         // Clone the paragraphs within the selection.
 662         ParagraphList copy_pars(lyx::next(pars.begin(), startpit),
 663                                 lyx::next(pars.begin(), endpit + 1));
 664
 665         // Remove the end of the last paragraph; afterwards, remove the
 666         // beginning of the first paragraph. Keep this order - there may only
 667         // be one paragraph!  Do not track deletions here; this is an internal
 668         // action not visible to the user
 669
 670         Paragraph & back = copy_pars.back();
 671         back.eraseChars(end, back.size(), false);
 672         Paragraph & front = copy_pars.front();
 673         front.eraseChars(0, start, false);
 674
 675         ParagraphList::iterator it = copy_pars.begin();
 676         ParagraphList::iterator it_end = copy_pars.end();
 677
 678         for (; it != it_end; ++it) {
 679                 // Since we have a copy of the paragraphs, the insets
 680                 // do not have a proper buffer reference. It makes
 681                 // sense to add them temporarily, because the
 682                 // operations below depend on that (acceptChanges included).
 683                 it->setInsetBuffers(const_cast<Buffer &>(buf));
 684                 // PassThru paragraphs have the Language
 685                 // latex_language. This is invalid for others, so we
 686                 // need to change it to the buffer language.
 687                 if (it->isPassThru())
 688                         it->changeLanguage(buf.params(),
 689                                            latex_language, buf.language());
 690         }
 691
 692         // do not copy text (also nested in insets) which is marked as
 693         // deleted, unless the whole selection was deleted
 694         if (!isFullyDeleted(copy_pars))
 695                 acceptChanges(copy_pars, buf.params());
 696         else
 697                 rejectChanges(copy_pars, buf.params());
 698
 699
 700         // do some final cleanup now, to make sure that the paragraphs
 701         // are not linked to something else.
 702         it = copy_pars.begin();
 703         for (; it != it_end; ++it) {
 704                 it->resetBuffer();
 705                 it->setInsetOwner(0);
 706         }
 707
 708         cutstack.push(make_pair(copy_pars, dc));
 709 }
 710
 711 } // namespace
 712
 713
 714 namespace cap {
 715
 716 void region(CursorSlice const & i1, CursorSlice const & i2,
 717             Inset::row_type & r1, Inset::row_type & r2,
 718             Inset::col_type & c1, Inset::col_type & c2)
 719 {
 720         Inset & p = i1.inset();
 721         c1 = p.col(i1.idx());
 722         c2 = p.col(i2.idx());
 723         if (c1 > c2)
 724                 swap(c1, c2);
 725         r1 = p.row(i1.idx());
 726         r2 = p.row(i2.idx());
 727         if (r1 > r2)
 728                 swap(r1, r2);
 729 }
 730
 731
 732 docstring grabAndEraseSelection(Cursor & cur)
 733 {
 734         if (!cur.selection())
 735                 return docstring();
 736         docstring res = grabSelection(cur);
 737         eraseSelection(cur);
 738         return res;
 739 }
 740
 741
 742 bool reduceSelectionToOneCell(CursorData & cur)
 743 {
 744         if (!cur.selection() || !cur.inMathed())
 745                 return false;
 746
 747         CursorSlice i1 = cur.selBegin();
 748         CursorSlice i2 = cur.selEnd();
 749         if (!i1.inset().asInsetMath())
 750                 return false;
 751
 752         // the easy case: do nothing if only one cell is selected
 753         if (i1.idx() == i2.idx())
 754                 return true;
 755
 756         cur.top().pos() = 0;
 757         cur.resetAnchor();
 758         cur.top().pos() = cur.top().lastpos();
 759
 760         return true;
 761 }
 762
 763
 764 bool multipleCellsSelected(CursorData const & cur)
 765 {
 766         if (!cur.selection() || !cur.inMathed())
 767                 return false;
 768
 769         CursorSlice i1 = cur.selBegin();
 770         CursorSlice i2 = cur.selEnd();
 771         if (!i1.inset().asInsetMath())
 772                 return false;
 773
 774         if (i1.idx() == i2.idx())
 775                 return false;
 776
 777         return true;
 778 }
 779
 780
 781 void switchBetweenClasses(DocumentClassConstPtr oldone,
 782                 DocumentClassConstPtr newone, InsetText & in, ErrorList & errorlist)
 783 {
 784         errorlist.clear();
 785
 786         LBUFERR(!in.paragraphs().empty());
 787         if (oldone == newone)
 788                 return;
 789
 790         DocumentClass const & oldtc = *oldone;
 791         DocumentClass const & newtc = *newone;
 792
 793         // layouts
 794         ParIterator it = par_iterator_begin(in);
 795         ParIterator end = par_iterator_end(in);
 796         // for remembering which layouts we've had to add
 797         set<docstring> newlayouts;
 798         for (; it != end; ++it) {
 799                 docstring const name = it->layout().name();
 800
 801                 // the pasted text will keep their own layout name. If this layout does
 802                 // not exist in the new document, it will behave like a standard layout.
 803                 bool const added_one = newtc.addLayoutIfNeeded(name);
 804                 if (added_one)
 805                         newlayouts.insert(name);
 806
 807                 if (added_one || newlayouts.find(name) != newlayouts.end()) {
 808                         // Warn the user.
 809                         docstring const s = bformat(_("Layout `%1$s' was not found."), name);
 810                         errorlist.push_back(ErrorItem(_("Layout Not Found"), s,
 811                                                       {it->id(), 0}, {it->id(), -1}));
 812                 }
 813
 814                 if (in.usePlainLayout())
 815                         it->setLayout(newtc.plainLayout());
 816                 else
 817                         it->setLayout(newtc[name]);
 818         }
 819
 820         // character styles and hidden table cells
 821         InsetIterator const i_end = inset_iterator_end(in);
 822         for (InsetIterator iit = inset_iterator_begin(in); iit != i_end; ++iit) {
 823                 InsetCode const code = iit->lyxCode();
 824                 if (code == FLEX_CODE) {
 825                         // FIXME: Should we verify all InsetCollapsible?
 826                         docstring const layoutName = iit->layoutName();
 827                         docstring const & n = newone->insetLayout(layoutName).name();
 828                         bool const is_undefined = n.empty() ||
 829                                 n == DocumentClass::plainInsetLayout().name();
 830                         if (!is_undefined)
 831                                 continue;
 832
 833                         // The flex inset is undefined in newtc
 834                         docstring const oldname = from_utf8(oldtc.name());
 835                         docstring const newname = from_utf8(newtc.name());
 836                         docstring s;
 837                         if (oldname == newname)
 838                                 s = bformat(_("Flex inset %1$s is undefined after "
 839                                         "reloading `%2$s' layout."), layoutName, oldname);
 840                         else
 841                                 s = bformat(_("Flex inset %1$s is undefined because of "
 842                                         "conversion from `%2$s' layout to `%3$s'."),
 843                                         layoutName, oldname, newname);
 844                         // To warn the user that something had to be done.
 845                         errorlist.push_back(ErrorItem(
 846                                                       _("Undefined flex inset"), s,
 847                                                       {iit.paragraph().id(), iit.pos()},
 848                                                       {iit.paragraph().id(), iit.pos() + 1}));
 849                 } else if (code == TABULAR_CODE) {
 850                         // The recursion above does not catch paragraphs in "hidden" cells,
 851                         // i.e., ones that are part of a multirow or multicolum. So we need
 852                         // to handle those separately.
 853                         // This is the cause of bug #9049.
 854                         InsetTabular * table = iit->asInsetTabular();
 855                         table->setLayoutForHiddenCells(newtc);
 856                 }
 857         }
 858 }
 859
 860
 861 vector<docstring> availableSelections(Buffer const * buf)
 862 {
 863         vector<docstring> selList;
 864         if (!buf)
 865                 return selList;
 866
 867         CutStack::const_iterator cit = theCuts.begin();
 868         CutStack::const_iterator end = theCuts.end();
 869         for (; cit != end; ++cit) {
 870                 // we do not use cit-> here because gcc 2.9x does not
 871                 // like it (JMarc)
 872                 ParagraphList const & pars = (*cit).first;
 873                 docstring textSel;
 874                 ParagraphList::const_iterator pit = pars.begin();
 875                 ParagraphList::const_iterator pend = pars.end();
 876                 for (; pit != pend; ++pit) {
 877                         Paragraph par(*pit, 0, 46);
 878                         // adapt paragraph to current buffer.
 879                         par.setInsetBuffers(const_cast<Buffer &>(*buf));
 880                         textSel += par.asString(AS_STR_INSETS);
 881                         if (textSel.size() > 45) {
 882                                 support::truncateWithEllipsis(textSel,45);
 883                                 break;
 884                         }
 885                 }
 886                 selList.push_back(textSel);
 887         }
 888
 889         return selList;
 890 }
 891
 892
 893 size_type numberOfSelections()
 894 {
 895         return theCuts.size();
 896 }
 897
 898 namespace {
 899
 900 void cutSelectionHelper(Cursor & cur, CutStack & cuts, bool doclear, bool realcut, bool putclip)
 901 {
 902         // This doesn't make sense, if there is no selection
 903         if (!cur.selection())
 904                 return;
 905
 906         // OK, we have a selection. This is always between cur.selBegin()
 907         // and cur.selEnd()
 908
 909         if (cur.inTexted()) {
 910                 Text * text = cur.text();
 911                 LBUFERR(text);
 912
 913                 saveSelection(cur);
 914
 915                 // make sure that the depth behind the selection are restored, too
 916                 cur.recordUndoSelection();
 917                 pit_type begpit = cur.selBegin().pit();
 918                 pit_type endpit = cur.selEnd().pit();
 919
 920                 int endpos = cur.selEnd().pos();
 921
 922                 BufferParams const & bp = cur.buffer()->params();
 923                 if (realcut) {
 924                         copySelectionHelper(*cur.buffer(),
 925                                 *text,
 926                                 begpit, endpit,
 927                                 cur.selBegin().pos(), endpos,
 928                                 bp.documentClassPtr(), cuts);
 929                         // Stuff what we got on the clipboard.
 930                         // Even if there is no selection.
 931                         if (putclip)
 932                                 putClipboard(cuts[0].first, cuts[0].second,
 933                                              cur.selectionAsString(true));
 934                 }
 935
 936                 if (begpit != endpit)
 937                         cur.screenUpdateFlags(Update::Force | Update::FitCursor);
 938
 939                 tie(endpit, endpos) =
 940                         eraseSelectionHelper(bp, text->paragraphs(), begpit, endpit,
 941                                              cur.selBegin().pos(), endpos);
 942
 943                 // cutSelection can invalidate the cursor so we need to set
 944                 // it anew. (Lgb)
 945                 // we prefer the end for when tracking changes
 946                 cur.pos() = endpos;
 947                 cur.pit() = endpit;
 948
 949                 // sometimes necessary
 950                 if (doclear
 951                         && text->paragraphs()[begpit].stripLeadingSpaces(bp.track_changes))
 952                         cur.fixIfBroken();
 953
 954                 // need a valid cursor. (Lgb)
 955                 cur.clearSelection();
 956
 957                 // After a cut operation, we must make sure that the Buffer is updated
 958                 // because some further operation might need updated label information for
 959                 // example. So we cannot just use "cur.forceBufferUpdate()" here.
 960                 // This fixes #7071.
 961                 cur.buffer()->updateBuffer();
 962
 963                 // tell tabular that a recent copy happened
 964                 dirtyTabularStack(false);
 965         }
 966
 967         if (cur.inMathed()) {
 968                 if (cur.selBegin().idx() != cur.selEnd().idx()) {
 969                         // The current selection spans more than one cell.
 970                         // Record all cells
 971                         cur.recordUndoInset();
 972                 } else {
 973                         // Record only the current cell to avoid a jumping
 974                         // cursor after undo
 975                         cur.recordUndo();
 976                 }
 977                 if (realcut)
 978                         copySelection(cur);
 979                 eraseSelection(cur);
 980         }
 981 }
 982
 983 } // namespace
 984
 985 void cutSelection(Cursor & cur, bool doclear, bool realcut)
 986 {
 987         cutSelectionHelper(cur, theCuts, doclear, realcut, true);
 988 }
 989
 990
 991 void cutSelectionToTemp(Cursor & cur, bool doclear, bool realcut)
 992 {
 993         cutSelectionHelper(cur, tempCut, doclear, realcut, false);
 994 }
 995
 996
 997 void copySelection(Cursor const & cur)
 998 {
 999         copySelection(cur, cur.selectionAsString(true));
1000 }
1001
1002
1003 void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
1004 {
1005         ParagraphList pars;
1006         Paragraph par;
1007         BufferParams const & bp = cur.buffer()->params();
1008         par.setLayout(bp.documentClass().plainLayout());
1009         Font font(inherit_font, bp.language);
1010         par.insertInset(0, inset, font, Change(Change::UNCHANGED));
1011         pars.push_back(par);
1012         theCuts.push(make_pair(pars, bp.documentClassPtr()));
1013
1014         // stuff the selection onto the X clipboard, from an explicit copy request
1015         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
1016 }
1017
1018
1019 namespace {
1020
1021 void copySelectionToStack(CursorData const & cur, CutStack & cutstack)
1022 {
1023         // this doesn't make sense, if there is no selection
1024         if (!cur.selection())
1025                 return;
1026
1027         // copySelection can not yet handle the case of cross idx selection
1028         if (cur.selBegin().idx() != cur.selEnd().idx())
1029                 return;
1030
1031         if (cur.inTexted()) {
1032                 Text * text = cur.text();
1033                 LBUFERR(text);
1034                 // ok we have a selection. This is always between cur.selBegin()
1035                 // and sel_end cursor
1036                 copySelectionHelper(*cur.buffer(), *text,
1037                                     cur.selBegin().pit(), cur.selEnd().pit(),
1038                                     cur.selBegin().pos(), cur.selEnd().pos(),
1039                                     cur.buffer()->params().documentClassPtr(),
1040                                     cutstack);
1041                 // Reset the dirty_tabular_stack_ flag only when something
1042                 // is copied to the clipboard (not to the selectionBuffer).
1043                 if (&cutstack == &theCuts)
1044                         dirtyTabularStack(false);
1045         }
1046
1047         if (cur.inMathed()) {
1048                 //lyxerr << "copySelection in mathed" << endl;
1049                 ParagraphList pars;
1050                 Paragraph par;
1051                 BufferParams const & bp = cur.buffer()->params();
1052                 // FIXME This should be the plain layout...right?
1053                 par.setLayout(bp.documentClass().plainLayout());
1054                 // For pasting into text, we set the language to the paragraph language
1055                 // (rather than the default_language which is always English; see #2596)
1056                 par.insert(0, grabSelection(cur), Font(sane_font, par.getParLanguage(bp)),
1057                            Change(Change::UNCHANGED));
1058                 pars.push_back(par);
1059                 cutstack.push(make_pair(pars, bp.documentClassPtr()));
1060         }
1061 }
1062
1063 } // namespace
1064
1065
1066 void copySelectionToStack()
1067 {
1068         if (!selectionBuffer.empty())
1069                 theCuts.push(selectionBuffer[0]);
1070 }
1071
1072
1073 void copySelection(Cursor const & cur, docstring const & plaintext)
1074 {
1075         // In tablemode, because copy and paste actually use special table stack
1076         // we do not attempt to get selected paragraphs under cursor. Instead, a
1077         // paragraph with the plain text version is generated so that table cells
1078         // can be pasted as pure text somewhere else.
1079         if (cur.selBegin().idx() != cur.selEnd().idx()) {
1080                 ParagraphList pars;
1081                 Paragraph par;
1082                 BufferParams const & bp = cur.buffer()->params();
1083                 par.setLayout(bp.documentClass().plainLayout());
1084                 par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
1085                 pars.push_back(par);
1086                 theCuts.push(make_pair(pars, bp.documentClassPtr()));
1087         } else {
1088                 copySelectionToStack(cur, theCuts);
1089         }
1090
1091         // stuff the selection onto the X clipboard, from an explicit copy request
1092         putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
1093 }
1094
1095
1096 void saveSelection(Cursor const & cur)
1097 {
1098         // This function is called, not when a selection is formed, but when
1099         // a selection is cleared. Therefore, multiple keyboard selection
1100         // will not repeatively trigger this function (bug 3877).
1101         if (cur.selection()
1102             && cur.selBegin() == cur.bv().cursor().selBegin()
1103             && cur.selEnd() == cur.bv().cursor().selEnd()) {
1104                 LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true) << "'");
1105                 copySelectionToStack(cur, selectionBuffer);
1106         }
1107 }
1108
1109
1110 bool selection()
1111 {
1112         return !selectionBuffer.empty();
1113 }
1114
1115
1116 void clearSelection()
1117 {
1118         selectionBuffer.clear();
1119 }
1120
1121
1122 void clearCutStack()
1123 {
1124         theCuts.clear();
1125         tempCut.clear();
1126 }
1127
1128
1129 docstring selection(size_t sel_index, DocumentClassConstPtr docclass)
1130 {
1131         if (sel_index >= theCuts.size())
1132                 return docstring();
1133
1134         unique_ptr<Buffer> buffer(copyToTempBuffer(theCuts[sel_index].first,
1135                                                    docclass));
1136         if (!buffer)
1137                 return docstring();
1138
1139         return buffer->paragraphs().back().asString(AS_STR_INSETS | AS_STR_NEWLINES);
1140 }
1141
1142
1143 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
1144                                                 DocumentClassConstPtr docclass, ErrorList & errorList,
1145                                                 cap::BranchAction branchAction)
1146 {
1147         if (cur.inTexted()) {
1148                 Text * text = cur.text();
1149                 LBUFERR(text);
1150
1151                 PasteReturnValue prv =
1152                         pasteSelectionHelper(cur, parlist, docclass, branchAction, errorList);
1153                 cur.forceBufferUpdate();
1154                 cur.clearSelection();
1155                 text->setCursor(cur, prv.pit, prv.pos);
1156         }
1157
1158         // mathed is handled in InsetMathNest/InsetMathGrid
1159         LATTEST(!cur.inMathed());
1160 }
1161
1162
1163 bool pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
1164 {
1165         // this does not make sense, if there is nothing to paste
1166         if (!checkPastePossible(sel_index))
1167                 return false;
1168
1169         cur.recordUndo();
1170         pasteParagraphList(cur, theCuts[sel_index].first,
1171                            theCuts[sel_index].second, errorList, BRANCH_ASK);
1172         return true;
1173 }
1174
1175
1176 bool pasteFromTemp(Cursor & cur, ErrorList & errorList)
1177 {
1178         // this does not make sense, if there is nothing to paste
1179         if (tempCut.empty() || tempCut[0].first.empty())
1180                 return false;
1181
1182         cur.recordUndo();
1183         pasteParagraphList(cur, tempCut[0].first,
1184                            tempCut[0].second, errorList, BRANCH_IGNORE);
1185         return true;
1186 }
1187
1188
1189 bool pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
1190                         Clipboard::TextType type)
1191 {
1192         // Use internal clipboard if it is the most recent one
1193         // This overrides asParagraphs and type on purpose!
1194         if (theClipboard().isInternal())
1195                 return pasteFromStack(cur, errorList, 0);
1196
1197         // First try LyX format
1198         if ((type == Clipboard::LyXTextType ||
1199              type == Clipboard::LyXOrPlainTextType ||
1200              type == Clipboard::AnyTextType) &&
1201             theClipboard().hasTextContents(Clipboard::LyXTextType)) {
1202                 string lyx = theClipboard().getAsLyX();
1203                 if (!lyx.empty()) {
1204                         // For some strange reason gcc 3.2 and 3.3 do not accept
1205                         // Buffer buffer(string(), false);
1206                         Buffer buffer("", false);
1207                         buffer.setUnnamed(true);
1208                         if (buffer.readString(lyx)) {
1209                                 cur.recordUndo();
1210                                 pasteParagraphList(cur, buffer.paragraphs(),
1211                                         buffer.params().documentClassPtr(), errorList);
1212                                 return true;
1213                         }
1214                 }
1215         }
1216
1217         // Then try TeX and HTML
1218         Clipboard::TextType types[2] = {Clipboard::HtmlTextType, Clipboard::LaTeXTextType};
1219         string names[2] = {"html", "latexclipboard"};
1220         for (int i = 0; i < 2; ++i) {
1221                 if (type != types[i] && type != Clipboard::AnyTextType)
1222                         continue;
1223                 bool available = theClipboard().hasTextContents(types[i]);
1224
1225                 // If a specific type was explicitly requested, try to
1226                 // interpret plain text: The user told us that the clipboard
1227                 // contents is in the desired format
1228                 if (!available && type == types[i]) {
1229                         types[i] = Clipboard::PlainTextType;
1230                         available = theClipboard().hasTextContents(types[i]);
1231                 }
1232
1233                 if (available) {
1234                         docstring text = theClipboard().getAsText(types[i]);
1235                         available = !text.empty();
1236                         if (available) {
1237                                 // For some strange reason gcc 3.2 and 3.3 do not accept
1238                                 // Buffer buffer(string(), false);
1239                                 Buffer buffer("", false);
1240                                 buffer.setUnnamed(true);
1241                                 available = buffer.importString(names[i], text, errorList);
1242                                 if (available)
1243                                         available = !buffer.paragraphs().empty();
1244                                 if (available && !buffer.paragraphs()[0].empty()) {
1245                                         // TeX2lyx (also used in the HTML chain) assumes English as document language
1246                                         // if no language is explicitly set (as is the case here).
1247                                         // We thus reset the temp buffer's language to the context language
1248                                         buffer.changeLanguage(buffer.language(), cur.getFont().language());
1249                                         cur.recordUndo();
1250                                         pasteParagraphList(cur, buffer.paragraphs(),
1251                                                 buffer.params().documentClassPtr(), errorList);
1252                                         return true;
1253                                 }
1254                         }
1255                 }
1256         }
1257
1258         // Then try plain text
1259         docstring const text = theClipboard().getAsText(Clipboard::PlainTextType);
1260         if (text.empty())
1261                 return false;
1262         cur.recordUndo();
1263         if (asParagraphs)
1264                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1265         else
1266                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1267         cur.forceBufferUpdate();
1268         return true;
1269 }
1270
1271
1272 void pasteSimpleText(Cursor & cur, bool asParagraphs)
1273 {
1274         docstring text;
1275         // Use internal clipboard if it is the most recent one
1276         if (theClipboard().isInternal()) {
1277                 if (!checkPastePossible(0))
1278                         return;
1279
1280                 ParagraphList const & pars = theCuts[0].first;
1281                 ParagraphList::const_iterator it = pars.begin();
1282                 for (; it != pars.end(); ++it) {
1283                         if (it != pars.begin())
1284                                 text += "\n";
1285                         text += (*it).asString();
1286                 }
1287                 asParagraphs = false;
1288         } else {
1289                 // Then try plain text
1290                 text = theClipboard().getAsText(Clipboard::PlainTextType);
1291         }
1292
1293         if (text.empty())
1294                 return;
1295
1296         cur.recordUndo();
1297         cutSelection(cur, true, false);
1298         if (asParagraphs)
1299                 cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
1300         else
1301                 cur.text()->insertStringAsLines(cur, text, cur.current_font);
1302 }
1303
1304
1305 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
1306                             Clipboard::GraphicsType preferedType)
1307 {
1308         LASSERT(theClipboard().hasGraphicsContents(preferedType), return);
1309
1310         // get picture from clipboard
1311         FileName filename = theClipboard().getAsGraphics(cur, preferedType);
1312         if (filename.empty())
1313                 return;
1314
1315         // create inset for graphic
1316         InsetGraphics * inset = new InsetGraphics(cur.buffer());
1317         InsetGraphicsParams params;
1318         params.filename = support::DocFileName(filename.absFileName(), false);
1319         inset->setParams(params);
1320         cur.recordUndo();
1321         cur.insert(inset);
1322 }
1323
1324
1325 void pasteSelection(Cursor & cur, ErrorList & errorList)
1326 {
1327         if (selectionBuffer.empty())
1328                 return;
1329         cur.recordUndo();
1330         pasteParagraphList(cur, selectionBuffer[0].first,
1331                            selectionBuffer[0].second, errorList);
1332 }
1333
1334
1335 void replaceSelectionWithString(Cursor & cur, docstring const & str)
1336 {
1337         cur.recordUndo();
1338         DocIterator selbeg = cur.selectionBegin();
1339
1340         // Get font setting before we cut, we need a copy here, not a bare reference.
1341         Font const font =
1342                 selbeg.paragraph().getFontSettings(cur.buffer()->params(), selbeg.pos());
1343
1344         // Insert the new string
1345         pos_type pos = cur.selEnd().pos();
1346         Paragraph & par = cur.selEnd().paragraph();
1347         docstring::const_iterator cit = str.begin();
1348         docstring::const_iterator end = str.end();
1349         for (; cit != end; ++cit, ++pos)
1350                 par.insertChar(pos, *cit, font, cur.buffer()->params().track_changes);
1351
1352         // Cut the selection
1353         cutSelection(cur, true, false);
1354 }
1355
1356
1357 void replaceSelection(Cursor & cur)
1358 {
1359         if (cur.selection())
1360                 cutSelection(cur, true, false);
1361 }
1362
1363
1364 void eraseSelection(Cursor & cur)
1365 {
1366         //lyxerr << "cap::eraseSelection begin: " << cur << endl;
1367         CursorSlice const & i1 = cur.selBegin();
1368         CursorSlice const & i2 = cur.selEnd();
1369         if (!i1.asInsetMath()) {
1370                 LYXERR0("Can't erase this selection");
1371                 return;
1372         }
1373
1374         saveSelection(cur);
1375         cur.top() = i1;
1376         InsetMath * p = i1.asInsetMath();
1377         if (i1.idx() == i2.idx()) {
1378                 i1.cell().erase(i1.pos(), i2.pos());
1379                 // We may have deleted i1.cell(cur.pos()).
1380                 // Make sure that pos is valid.
1381                 if (cur.pos() > cur.lastpos())
1382                         cur.pos() = cur.lastpos();
1383         } else if (p->nrows() > 0 && p->ncols() > 0) {
1384                 // This is a grid, delete a nice square region
1385                 Inset::row_type r1, r2;
1386                 Inset::col_type c1, c2;
1387                 region(i1, i2, r1, r2, c1, c2);
1388                 for (Inset::row_type row = r1; row <= r2; ++row)
1389                         for (Inset::col_type col = c1; col <= c2; ++col)
1390                                 p->cell(p->index(row, col)).clear();
1391                 // We've deleted the whole cell. Only pos 0 is valid.
1392                 cur.pos() = 0;
1393         } else {
1394                 Inset::idx_type idx1 = i1.idx();
1395                 Inset::idx_type idx2 = i2.idx();
1396                 if (idx1 > idx2)
1397                         swap(idx1, idx2);
1398                 for (Inset::idx_type idx = idx1 ; idx <= idx2; ++idx)
1399                         p->cell(idx).clear();
1400                 // We've deleted the whole cell. Only pos 0 is valid.
1401                 cur.pos() = 0;
1402         }
1403
1404         // need a valid cursor. (Lgb)
1405         cur.clearSelection();
1406         //lyxerr << "cap::eraseSelection end: " << cur << endl;
1407 }
1408
1409
1410 void selDel(Cursor & cur)
1411 {
1412         //lyxerr << "cap::selDel" << endl;
1413         if (cur.selection())
1414                 eraseSelection(cur);
1415 }
1416
1417
1418 void selClearOrDel(Cursor & cur)
1419 {
1420         //lyxerr << "cap::selClearOrDel" << endl;
1421         if (lyxrc.auto_region_delete)
1422                 selDel(cur);
1423         else
1424                 cur.selection(false);
1425 }
1426
1427
1428 docstring grabSelection(CursorData const & cur)
1429 {
1430         if (!cur.selection())
1431                 return docstring();
1432
1433 #if 0
1434         // grab selection by glueing multiple cells together. This is not what
1435         // we want because selections spanning multiple cells will get "&" and "\\"
1436         // seperators.
1437         ostringstream os;
1438         for (DocIterator dit = cur.selectionBegin();
1439              dit != cur.selectionEnd(); dit.forwardPos())
1440                 os << asString(dit.cell());
1441         return os.str();
1442 #endif
1443
1444         CursorSlice i1 = cur.selBegin();
1445         CursorSlice i2 = cur.selEnd();
1446
1447         if (i1.idx() == i2.idx()) {
1448                 if (i1.inset().asInsetMath()) {
1449                         MathData::const_iterator it = i1.cell().begin();
1450                         Buffer * buf = cur.buffer();
1451                         return asString(MathData(buf, it + i1.pos(), it + i2.pos()));
1452                 } else {
1453                         return from_ascii("unknown selection 1");
1454                 }
1455         }
1456
1457         Inset::row_type r1, r2;
1458         Inset::col_type c1, c2;
1459         region(i1, i2, r1, r2, c1, c2);
1460
1461         docstring data;
1462         if (i1.inset().asInsetMath()) {
1463                 for (Inset::row_type row = r1; row <= r2; ++row) {
1464                         if (row > r1)
1465                                 data += "\\\\";
1466                         for (Inset::col_type col = c1; col <= c2; ++col) {
1467                                 if (col > c1)
1468                                         data += '&';
1469                                 data += asString(i1.asInsetMath()->
1470                                         cell(i1.asInsetMath()->index(row, col)));
1471                         }
1472                 }
1473         } else {
1474                 data = from_ascii("unknown selection 2");
1475         }
1476         return data;
1477 }
1478
1479
1480 void dirtyTabularStack(bool b)
1481 {
1482         dirty_tabular_stack_ = b;
1483 }
1484
1485
1486 bool tabularStackDirty()
1487 {
1488         return dirty_tabular_stack_;
1489 }
1490
1491
1492 } // namespace cap
1493 } // namespace lyx