src/BufferView2.C

   1 /* This file is part of
   2  * ======================================================
   3  *
   4  *           LyX, The Document Processor
   5  *
   6  *           Copyright 1995 Matthias Ettrich
   7  *           Copyright 1995-2001 The LyX Team.
   8  *
   9  * ====================================================== */
  10
  11 #include <fstream>
  12 #include <algorithm>
  13
  14 #include <config.h>
  15
  16 #include "BufferView.h"
  17 #include "buffer.h"
  18 #include "lyxcursor.h"
  19 #include "lyxtext.h"
  20 #include "insets/inseterror.h"
  21 #include "LyXView.h"
  22 #include "bufferlist.h"
  23 #include "support/FileInfo.h"
  24 #include "lyxscreen.h"
  25 #include "support/filetools.h"
  26 #include "lyx_gui_misc.h"
  27 #include "LaTeX.h"
  28 #include "BufferView_pimpl.h"
  29 #include "insets/insetcommand.h" //ChangeRefs
  30 #include "support/lyxfunctional.h" //equal_1st_in_pair
  31 #include "language.h"
  32 #include "gettext.h"
  33 #include "undo_funcs.h"
  34 #include "debug.h"
  35 #include "iterators.h"
  36
  37 extern BufferList bufferlist;
  38
  39 using std::pair;
  40 using std::endl;
  41 using std::ifstream;
  42 using std::vector;
  43 using std::find;
  44 using std::count;
  45 using std::count_if;
  46
  47
  48 // Inserts a file into current document
  49 bool BufferView::insertLyXFile(string const & filen)
  50         //
  51         // Copyright CHT Software Service GmbH
  52         // Uwe C. Schroeder
  53         //
  54         // Insert a Lyxformat - file into current buffer
  55         //
  56         // Moved from lyx_cb.C (Lgb)
  57 {
  58         if (filen.empty()) return false;
  59
  60         string const fname = MakeAbsPath(filen);
  61
  62         // check if file exist
  63         FileInfo const fi(fname);
  64
  65         if (!fi.readable()) {
  66                 WriteAlert(_("Error!"),
  67                            _("Specified file is unreadable: "),
  68                            MakeDisplayPath(fname, 50));
  69                 return false;
  70         }
  71
  72         beforeChange(text);
  73
  74         ifstream ifs(fname.c_str());
  75         if (!ifs) {
  76                 WriteAlert(_("Error!"),
  77                            _("Cannot open specified file: "),
  78                            MakeDisplayPath(fname, 50));
  79                 return false;
  80         }
  81
  82         char const c = ifs.peek();
  83
  84         LyXLex lex(0, 0);
  85         lex.setStream(ifs);
  86
  87         bool res = true;
  88
  89         if (c == '#') {
  90                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
  91                 res = buffer()->readFile(lex, text->cursor.par());
  92         } else {
  93                 lyxerr[Debug::INFO] << "Will insert file without header"
  94                                     << endl;
  95                 res = buffer()->readLyXformat2(lex, text->cursor.par());
  96         }
  97
  98         resize();
  99         return res;
 100 }
 101
 102
 103 bool BufferView::removeAutoInsets()
 104 {
 105         Paragraph * par = buffer()->paragraph;
 106
 107         LyXCursor tmpcursor = text->cursor;
 108         LyXCursor cursor;
 109
 110         bool a = false;
 111
 112         while (par) {
 113                 // this has to be done before the delete
 114                 text->setCursor(this, cursor, par, 0);
 115                 if (par->autoDeleteInsets()){
 116                         a = true;
 117                         text->redoParagraphs(this, cursor,
 118                                              cursor.par()->next());
 119                         text->fullRebreak(this);
 120                 }
 121                 par = par->next();
 122         }
 123
 124         // avoid forbidden cursor positions caused by error removing
 125         if (tmpcursor.pos() > tmpcursor.par()->size())
 126                 tmpcursor.pos(tmpcursor.par()->size());
 127
 128         text->setCursorIntern(this, tmpcursor.par(), tmpcursor.pos());
 129
 130         return a;
 131 }
 132
 133
 134 void BufferView::insertErrors(TeXErrors & terr)
 135 {
 136         // Save the cursor position
 137         LyXCursor cursor = text->cursor;
 138
 139         for (TeXErrors::Errors::const_iterator cit = terr.begin();
 140              cit != terr.end();
 141              ++cit) {
 142                 string const desctext(cit->error_desc);
 143                 string const errortext(cit->error_text);
 144                 string const msgtxt = desctext + '\n' + errortext;
 145                 int const errorrow = cit->error_in_line;
 146
 147                 // Insert error string for row number
 148                 int tmpid = -1;
 149                 int tmppos = -1;
 150
 151                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 152                         buffer()->texrow.increasePos(tmpid, tmppos);
 153                 }
 154
 155                 Paragraph * texrowpar = 0;
 156
 157                 if (tmpid == -1) {
 158                         texrowpar = text->firstParagraph();
 159                         tmppos = 0;
 160                 } else {
 161                         texrowpar = buffer()->getParFromID(tmpid);
 162                 }
 163
 164                 if (texrowpar == 0)
 165                         continue;
 166
 167                 InsetError * new_inset = new InsetError(msgtxt);
 168                 text->setCursorIntern(this, texrowpar, tmppos);
 169                 text->insertInset(this, new_inset);
 170                 text->fullRebreak(this);
 171         }
 172         // Restore the cursor position
 173         text->setCursorIntern(this, cursor.par(), cursor.pos());
 174 }
 175
 176
 177 void BufferView::setCursorFromRow(int row)
 178 {
 179         int tmpid = -1;
 180         int tmppos = -1;
 181
 182         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 183
 184         Paragraph * texrowpar;
 185
 186         if (tmpid == -1) {
 187                 texrowpar = text->firstParagraph();
 188                 tmppos = 0;
 189         } else {
 190                 texrowpar = buffer()->getParFromID(tmpid);
 191         }
 192         text->setCursor(this, texrowpar, tmppos);
 193 }
 194
 195
 196 bool BufferView::insertInset(Inset * inset, string const & lout)
 197 {
 198         return pimpl_->insertInset(inset, lout);
 199 }
 200
 201
 202 /* This is also a buffer property (ale) */
 203 // Not so sure about that. a goto Label function can not be buffer local, just
 204 // think how this will work in a multiwindo/buffer environment, all the
 205 // cursors in all the views showing this buffer will move. (Lgb)
 206 // OK, then no cursor action should be allowed in buffer. (ale)
 207 bool BufferView::gotoLabel(string const & label)
 208
 209 {
 210         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 211              it != buffer()->inset_iterator_end(); ++it) {
 212                 vector<string> labels = (*it)->getLabelList();
 213                 if (find(labels.begin(),labels.end(),label)
 214                      != labels.end()) {
 215                         beforeChange(text);
 216                         text->setCursor(this, it.getPar(), it.getPos());
 217                         text->selection.cursor = text->cursor;
 218                         update(text, BufferView::SELECT|BufferView::FITCUR);
 219                         return true;
 220                 }
 221         }
 222         return false;
 223 }
 224
 225
 226 void BufferView::menuUndo()
 227 {
 228         if (available()) {
 229                 owner()->message(_("Undo"));
 230                 hideCursor();
 231                 beforeChange(text);
 232                 update(text, BufferView::SELECT|BufferView::FITCUR);
 233                 if (!textUndo(this))
 234                         owner()->message(_("No further undo information"));
 235                 else
 236                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 237                 setState();
 238         }
 239 }
 240
 241
 242 void BufferView::menuRedo()
 243 {
 244         if (theLockingInset()) {
 245                 owner()->message(_("Redo not yet supported in math mode"));
 246                 return;
 247         }
 248
 249         if (available()) {
 250                 owner()->message(_("Redo"));
 251                 hideCursor();
 252                 beforeChange(text);
 253                 update(text, BufferView::SELECT|BufferView::FITCUR);
 254                 if (!textRedo(this))
 255                         owner()->message(_("No further redo information"));
 256                 else
 257                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 258                 setState();
 259         }
 260 }
 261
 262
 263 void BufferView::copyEnvironment()
 264 {
 265         if (available()) {
 266                 text->copyEnvironmentType();
 267                 // clear the selection, even if mark_set
 268                 toggleSelection();
 269                 text->clearSelection();
 270                 update(text, BufferView::SELECT|BufferView::FITCUR);
 271                 owner()->message(_("Paragraph environment type copied"));
 272         }
 273 }
 274
 275
 276 void BufferView::pasteEnvironment()
 277 {
 278         if (available()) {
 279                 text->pasteEnvironmentType(this);
 280                 owner()->message(_("Paragraph environment type set"));
 281                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 282         }
 283 }
 284
 285
 286 void BufferView::copy()
 287 {
 288         if (available()) {
 289                 text->copySelection(this);
 290                 // clear the selection, even if mark_set
 291                 toggleSelection();
 292                 text->clearSelection();
 293                 update(text, BufferView::SELECT|BufferView::FITCUR);
 294                 owner()->message(_("Copy"));
 295         }
 296 }
 297
 298
 299 void BufferView::cut(bool realcut)
 300 {
 301         if (available()) {
 302                 hideCursor();
 303                 update(text, BufferView::SELECT|BufferView::FITCUR);
 304                 text->cutSelection(this, true, realcut);
 305                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 306                 owner()->message(_("Cut"));
 307         }
 308 }
 309
 310
 311 void BufferView::paste()
 312 {
 313         if (!available()) return;
 314
 315         owner()->message(_("Paste"));
 316
 317         hideCursor();
 318         // clear the selection
 319         toggleSelection();
 320         text->clearSelection();
 321         update(text, BufferView::SELECT|BufferView::FITCUR);
 322
 323         // paste
 324         text->pasteSelection(this);
 325         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 326
 327         // clear the selection
 328         toggleSelection();
 329         text->clearSelection();
 330         update(text, BufferView::SELECT|BufferView::FITCUR);
 331 }
 332
 333
 334 /* these functions are for the spellchecker */
 335 string const BufferView::nextWord(float & value)
 336 {
 337         if (!available()) {
 338                 value = 1;
 339                 return string();
 340         }
 341
 342         return text->selectNextWordToSpellcheck(this, value);
 343 }
 344
 345
 346 void BufferView::selectLastWord()
 347 {
 348         if (!available()) return;
 349
 350         LyXCursor cur = text->selection.cursor;
 351         hideCursor();
 352         beforeChange(text);
 353         text->selection.cursor = cur;
 354         text->selectSelectedWord(this);
 355         toggleSelection(false);
 356         update(text, BufferView::SELECT|BufferView::FITCUR);
 357 }
 358
 359
 360 void BufferView::endOfSpellCheck()
 361 {
 362         if (!available()) return;
 363
 364         hideCursor();
 365         beforeChange(text);
 366         text->selectSelectedWord(this);
 367         text->clearSelection();
 368         update(text, BufferView::SELECT|BufferView::FITCUR);
 369 }
 370
 371
 372 void BufferView::replaceWord(string const & replacestring)
 373 {
 374         if (!available()) return;
 375
 376         LyXText * tt = getLyXText();
 377         hideCursor();
 378         update(tt, BufferView::SELECT|BufferView::FITCUR);
 379
 380         /* clear the selection (if there is any) */
 381         toggleSelection(false);
 382         update(tt, BufferView::SELECT|BufferView::FITCUR);
 383
 384         /* clear the selection (if there is any) */
 385         toggleSelection(false);
 386         tt->replaceSelectionWithString(this, replacestring);
 387
 388         tt->setSelectionOverString(this, replacestring);
 389
 390         // Go back so that replacement string is also spellchecked
 391         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 392                 tt->cursorLeft(this);
 393         }
 394         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 395 }
 396 // End of spellchecker stuff
 397
 398
 399 bool BufferView::lockInset(UpdatableInset * inset)
 400 {
 401         if (!theLockingInset() && inset) {
 402                 theLockingInset(inset);
 403                 return true;
 404         } else if (inset) {
 405             return theLockingInset()->lockInsetInInset(this, inset);
 406         }
 407         return false;
 408 }
 409
 410
 411 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 412 {
 413         if (available() && theLockingInset()) {
 414                 LyXCursor cursor = text->cursor;
 415                 Inset * locking_inset = theLockingInset()->getLockingInset();
 416
 417                 if ((cursor.pos() - 1 >= 0) &&
 418                     (cursor.par()->getChar(cursor.pos() - 1) ==
 419                      Paragraph::META_INSET) &&
 420                     (cursor.par()->getInset(cursor.pos() - 1) ==
 421                      locking_inset))
 422                         text->setCursor(this, cursor,
 423                                         cursor.par(), cursor.pos() - 1);
 424                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 425                 LyXText * txt = getLyXText();
 426                 if (locking_inset->isTextInset() &&
 427                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 428                     (txt->real_current_font.language() !=
 429                      buffer()->params.language
 430                      || txt->real_current_font.isVisibleRightToLeft()
 431                      != buffer()->params.language->RightToLeft()))
 432                         shape = (txt->real_current_font.isVisibleRightToLeft())
 433                                 ? LyXScreen::REVERSED_L_SHAPE
 434                                 : LyXScreen::L_SHAPE;
 435                 y += cursor.y() + theLockingInset()->insetInInsetY();
 436                 pimpl_->screen_->showManualCursor(text, x, y, asc, desc,
 437                                                   shape);
 438         }
 439 }
 440
 441
 442 void BufferView::hideLockedInsetCursor()
 443 {
 444         if (theLockingInset() && available()) {
 445                 pimpl_->screen_->hideCursor();
 446         }
 447 }
 448
 449
 450 void BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 451 {
 452         if (theLockingInset() && available()) {
 453                 y += text->cursor.y() + theLockingInset()->insetInInsetY();
 454                 if (pimpl_->screen_->fitManualCursor(text, this, x, y, asc, desc))
 455                         updateScrollbar();
 456         }
 457 }
 458
 459
 460 int BufferView::unlockInset(UpdatableInset * inset)
 461 {
 462         if (inset && theLockingInset() == inset) {
 463                 inset->insetUnlock(this);
 464                 theLockingInset(0);
 465                 finishUndo();
 466                 return 0;
 467         } else if (inset && theLockingInset() &&
 468                    theLockingInset()->unlockInsetInInset(this, inset)) {
 469                 finishUndo();
 470                 return 0;
 471         }
 472         return bufferlist.unlockInset(inset);
 473 }
 474
 475
 476 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 477 {
 478         if (!theLockingInset())
 479                 return; // shouldn't happen
 480         if (kind == Undo::EDIT) // in this case insets would not be stored!
 481                 kind = Undo::FINISH;
 482         setUndo(this, kind,
 483                 text->cursor.par(),
 484                 text->cursor.par()->next());
 485 }
 486
 487
 488 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 489 {
 490         pimpl_->updateInset(inset, mark_dirty);
 491 }
 492
 493
 494 bool BufferView::ChangeInsets(Inset::Code code,
 495                               string const & from, string const & to)
 496 {
 497         bool flag = false;
 498         LyXCursor cursor = text->cursor;
 499         LyXCursor tmpcursor = cursor;
 500         cursor.par(tmpcursor.par());
 501         cursor.pos(tmpcursor.pos());
 502
 503         ParIterator end = buffer()->par_iterator_end();
 504         for (ParIterator it = buffer()->par_iterator_begin();
 505              it != end; ++it) {
 506                 Paragraph * par = *it;
 507                 bool flag2 = false;
 508                 for (Paragraph::inset_iterator it2 = par->inset_iterator_begin();
 509                      it2 != par->inset_iterator_end(); ++it2) {
 510                         if ((*it2)->lyxCode() == code) {
 511                                 InsetCommand * inset = static_cast<InsetCommand *>(*it2);
 512                                 if (inset->getContents() == from) {
 513                                         inset->setContents(to);
 514                                         flag2 = true;
 515                                 }
 516                         }
 517                 }
 518                 if (flag2) {
 519                         flag = true;
 520 #warning Fix me
 521                         // The test it.size()==1 was needed to prevent crashes.
 522                         // How to set the cursor corretly when it.size()>1 ??
 523                         if (it.size() == 1) {
 524                                 text->setCursorIntern(this, par, 0);
 525                                 text->redoParagraphs(this, text->cursor,
 526                                                      text->cursor.par()->next());
 527                                 text->fullRebreak(this);
 528                         }
 529                 }
 530         }
 531         text->setCursorIntern(this, cursor.par(), cursor.pos());
 532         return flag;
 533 }
 534
 535
 536 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 537 {
 538         // Check if the label 'from' appears more than once
 539         vector<string> labels = buffer()->getLabelList();
 540         if (count(labels.begin(), labels.end(), from) > 1)
 541                 return false;
 542
 543         return ChangeInsets(Inset::REF_CODE, from, to);
 544 }
 545
 546
 547 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 548 {
 549
 550         vector<pair<string,string> > keys = buffer()->getBibkeyList();
 551         if (count_if(keys.begin(), keys.end(),
 552                      lyx::equal_1st_in_pair<string,string>(from))
 553             > 1)
 554                 return false;
 555
 556         return ChangeInsets(Inset::CITE_CODE, from, to);
 557 }
 558
 559
 560 UpdatableInset * BufferView::theLockingInset() const
 561 {
 562         // If NULL is not allowed we should put an Assert here. (Lgb)
 563         if (text)
 564                 return text->the_locking_inset;
 565         return 0;
 566 }
 567
 568
 569 void BufferView::theLockingInset(UpdatableInset * inset)
 570 {
 571         text->the_locking_inset = inset;
 572 }
 573
 574
 575 LyXText * BufferView::getLyXText() const
 576 {
 577         if (theLockingInset()) {
 578                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 579                 if (txt)
 580                         return txt;
 581         }
 582         return text;
 583 }
 584
 585
 586 LyXText * BufferView::getParentText(Inset * inset) const
 587 {
 588         if (inset->owner()) {
 589                 LyXText * txt = inset->getLyXText(this);
 590                 inset = inset->owner();
 591                 while (inset && inset->getLyXText(this) == txt)
 592                         inset = inset->owner();
 593                 if (inset)
 594                         return inset->getLyXText(this);
 595         }
 596         return text;
 597 }
 598
 599
 600 Language const * BufferView::getParentLanguage(Inset * inset) const
 601 {
 602         LyXText * text = getParentText(inset);
 603         return text->cursor.par()->getFontSettings(buffer()->params,
 604                                                    text->cursor.pos()).language();
 605 }