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         int 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 #if 0
 291                 // clear the selection, even if mark_set
 292                 toggleSelection();
 293                 text->clearSelection();
 294                 update(text, BufferView::SELECT|BufferView::FITCUR);
 295 #endif
 296                 owner()->message(_("Copy"));
 297         }
 298 }
 299
 300
 301 void BufferView::cut(bool realcut)
 302 {
 303         if (available()) {
 304                 hideCursor();
 305                 update(text, BufferView::SELECT|BufferView::FITCUR);
 306                 text->cutSelection(this, true, realcut);
 307                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 308                 owner()->message(_("Cut"));
 309         }
 310 }
 311
 312
 313 void BufferView::paste()
 314 {
 315         if (!available()) return;
 316
 317         owner()->message(_("Paste"));
 318
 319         hideCursor();
 320         // clear the selection
 321         toggleSelection();
 322         text->clearSelection();
 323         update(text, BufferView::SELECT|BufferView::FITCUR);
 324
 325         // paste
 326         text->pasteSelection(this);
 327         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 328
 329         // clear the selection
 330         toggleSelection();
 331         text->clearSelection();
 332         update(text, BufferView::SELECT|BufferView::FITCUR);
 333 }
 334
 335
 336 /* these functions are for the spellchecker */
 337 string const BufferView::nextWord(float & value)
 338 {
 339         if (!available()) {
 340                 value = 1;
 341                 return string();
 342         }
 343
 344         return text->selectNextWordToSpellcheck(this, value);
 345 }
 346
 347
 348 void BufferView::selectLastWord()
 349 {
 350         if (!available()) return;
 351
 352         LyXCursor cur = text->selection.cursor;
 353         hideCursor();
 354         beforeChange(text);
 355         text->selection.cursor = cur;
 356         text->selectSelectedWord(this);
 357         toggleSelection(false);
 358         update(text, BufferView::SELECT|BufferView::FITCUR);
 359 }
 360
 361
 362 void BufferView::endOfSpellCheck()
 363 {
 364         if (!available()) return;
 365
 366         hideCursor();
 367         beforeChange(text);
 368         text->selectSelectedWord(this);
 369         text->clearSelection();
 370         update(text, BufferView::SELECT|BufferView::FITCUR);
 371 }
 372
 373
 374 void BufferView::replaceWord(string const & replacestring)
 375 {
 376         if (!available()) return;
 377
 378         LyXText * tt = getLyXText();
 379         hideCursor();
 380         update(tt, BufferView::SELECT|BufferView::FITCUR);
 381
 382         /* clear the selection (if there is any) */
 383         toggleSelection(false);
 384         update(tt, BufferView::SELECT|BufferView::FITCUR);
 385
 386         /* clear the selection (if there is any) */
 387         toggleSelection(false);
 388         tt->replaceSelectionWithString(this, replacestring);
 389
 390         tt->setSelectionOverString(this, replacestring);
 391
 392         // Go back so that replacement string is also spellchecked
 393         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 394                 tt->cursorLeft(this);
 395         }
 396         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 397 }
 398 // End of spellchecker stuff
 399
 400
 401 bool BufferView::lockInset(UpdatableInset * inset)
 402 {
 403         if (!theLockingInset() && inset) {
 404                 theLockingInset(inset);
 405                 return true;
 406         } else if (inset) {
 407             return theLockingInset()->lockInsetInInset(this, inset);
 408         }
 409         return false;
 410 }
 411
 412
 413 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 414 {
 415         if (available() && theLockingInset()) {
 416                 LyXCursor cursor = text->cursor;
 417                 Inset * locking_inset = theLockingInset()->getLockingInset();
 418
 419                 if ((cursor.pos() - 1 >= 0) &&
 420                     cursor.par()->isInset(cursor.pos() - 1) &&
 421                     (cursor.par()->getInset(cursor.pos() - 1) ==
 422                      locking_inset))
 423                         text->setCursor(this, cursor,
 424                                         cursor.par(), cursor.pos() - 1);
 425                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 426                 LyXText * txt = getLyXText();
 427                 if (locking_inset->isTextInset() &&
 428                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 429                     (txt->real_current_font.language() !=
 430                      buffer()->params.language
 431                      || txt->real_current_font.isVisibleRightToLeft()
 432                      != buffer()->params.language->RightToLeft()))
 433                         shape = (txt->real_current_font.isVisibleRightToLeft())
 434                                 ? LyXScreen::REVERSED_L_SHAPE
 435                                 : LyXScreen::L_SHAPE;
 436                 y += cursor.y() + theLockingInset()->insetInInsetY();
 437                 pimpl_->screen_->showManualCursor(text, x, y, asc, desc,
 438                                                   shape);
 439         }
 440 }
 441
 442
 443 void BufferView::hideLockedInsetCursor()
 444 {
 445         if (theLockingInset() && available()) {
 446                 pimpl_->screen_->hideCursor();
 447         }
 448 }
 449
 450
 451 void BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 452 {
 453         if (theLockingInset() && available()) {
 454                 y += text->cursor.y() + theLockingInset()->insetInInsetY();
 455                 if (pimpl_->screen_->fitManualCursor(text, this, x, y, asc, desc))
 456                         updateScrollbar();
 457         }
 458 }
 459
 460
 461 int BufferView::unlockInset(UpdatableInset * inset)
 462 {
 463         if (inset && theLockingInset() == inset) {
 464                 inset->insetUnlock(this);
 465                 theLockingInset(0);
 466                 finishUndo();
 467                 return 0;
 468         } else if (inset && theLockingInset() &&
 469                    theLockingInset()->unlockInsetInInset(this, inset)) {
 470                 finishUndo();
 471                 return 0;
 472         }
 473         return bufferlist.unlockInset(inset);
 474 }
 475
 476
 477 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 478 {
 479         if (!theLockingInset())
 480                 return; // shouldn't happen
 481         if (kind == Undo::EDIT) // in this case insets would not be stored!
 482                 kind = Undo::FINISH;
 483         setUndo(this, kind,
 484                 text->cursor.par(),
 485                 text->cursor.par()->next());
 486 }
 487
 488
 489 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 490 {
 491         pimpl_->updateInset(inset, mark_dirty);
 492 }
 493
 494
 495 bool BufferView::ChangeInsets(Inset::Code code,
 496                               string const & from, string const & to)
 497 {
 498         bool flag = false;
 499         LyXCursor cursor = text->cursor;
 500         LyXCursor tmpcursor = cursor;
 501         cursor.par(tmpcursor.par());
 502         cursor.pos(tmpcursor.pos());
 503
 504         ParIterator end = buffer()->par_iterator_end();
 505         for (ParIterator it = buffer()->par_iterator_begin();
 506              it != end; ++it) {
 507                 Paragraph * par = *it;
 508                 bool flag2 = false;
 509                 for (Paragraph::inset_iterator it2 = par->inset_iterator_begin();
 510                      it2 != par->inset_iterator_end(); ++it2) {
 511                         if ((*it2)->lyxCode() == code) {
 512                                 InsetCommand * inset = static_cast<InsetCommand *>(*it2);
 513                                 if (inset->getContents() == from) {
 514                                         inset->setContents(to);
 515                                         flag2 = true;
 516                                 }
 517                         }
 518                 }
 519                 if (flag2) {
 520                         flag = true;
 521 #warning Fix me
 522                         // The test it.size()==1 was needed to prevent crashes.
 523                         // How to set the cursor corretly when it.size()>1 ??
 524                         if (it.size() == 1) {
 525                                 text->setCursorIntern(this, par, 0);
 526                                 text->redoParagraphs(this, text->cursor,
 527                                                      text->cursor.par()->next());
 528                                 text->fullRebreak(this);
 529                         }
 530                 }
 531         }
 532         text->setCursorIntern(this, cursor.par(), cursor.pos());
 533         return flag;
 534 }
 535
 536
 537 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 538 {
 539         // Check if the label 'from' appears more than once
 540         vector<string> labels = buffer()->getLabelList();
 541         if (count(labels.begin(), labels.end(), from) > 1)
 542                 return false;
 543
 544         return ChangeInsets(Inset::REF_CODE, from, to);
 545 }
 546
 547
 548 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 549 {
 550
 551         vector<pair<string,string> > keys = buffer()->getBibkeyList();
 552         if (count_if(keys.begin(), keys.end(),
 553                      lyx::equal_1st_in_pair<string,string>(from))
 554             > 1)
 555                 return false;
 556
 557         return ChangeInsets(Inset::CITE_CODE, from, to);
 558 }
 559
 560
 561 UpdatableInset * BufferView::theLockingInset() const
 562 {
 563         // If NULL is not allowed we should put an Assert here. (Lgb)
 564         if (text)
 565                 return text->the_locking_inset;
 566         return 0;
 567 }
 568
 569
 570 void BufferView::theLockingInset(UpdatableInset * inset)
 571 {
 572         text->the_locking_inset = inset;
 573 }
 574
 575
 576 LyXText * BufferView::getLyXText() const
 577 {
 578         if (theLockingInset()) {
 579                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 580                 if (txt)
 581                         return txt;
 582         }
 583         return text;
 584 }
 585
 586
 587 LyXText * BufferView::getParentText(Inset * inset) const
 588 {
 589         if (inset->owner()) {
 590                 LyXText * txt = inset->getLyXText(this);
 591                 inset = inset->owner();
 592                 while (inset && inset->getLyXText(this) == txt)
 593                         inset = inset->owner();
 594                 if (inset)
 595                         return inset->getLyXText(this);
 596         }
 597         return text;
 598 }
 599
 600
 601 Language const * BufferView::getParentLanguage(Inset * inset) const
 602 {
 603         LyXText * text = getParentText(inset);
 604         return text->cursor.par()->getFontSettings(buffer()->params,
 605                                                    text->cursor.pos()).language();
 606 }