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