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 "frontends/Alert.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                 Alert::alert(_("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                 Alert::alert(_("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                 owner()->message(_("Paragraph environment type copied"));
 268         }
 269 }
 270
 271
 272 void BufferView::pasteEnvironment()
 273 {
 274         if (available()) {
 275                 text->pasteEnvironmentType(this);
 276                 owner()->message(_("Paragraph environment type set"));
 277                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 278         }
 279 }
 280
 281
 282 void BufferView::copy()
 283 {
 284         if (available()) {
 285                 text->copySelection(this);
 286                 owner()->message(_("Copy"));
 287         }
 288 }
 289
 290
 291 void BufferView::cut(bool realcut)
 292 {
 293         if (available()) {
 294                 hideCursor();
 295                 update(text, BufferView::SELECT|BufferView::FITCUR);
 296                 text->cutSelection(this, true, realcut);
 297                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 298                 owner()->message(_("Cut"));
 299         }
 300 }
 301
 302
 303 void BufferView::paste()
 304 {
 305         if (!available()) return;
 306
 307         owner()->message(_("Paste"));
 308
 309         hideCursor();
 310         // clear the selection
 311         toggleSelection();
 312         text->clearSelection();
 313         update(text, BufferView::SELECT|BufferView::FITCUR);
 314
 315         // paste
 316         text->pasteSelection(this);
 317         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 318
 319         // clear the selection
 320         toggleSelection();
 321         text->clearSelection();
 322         update(text, BufferView::SELECT|BufferView::FITCUR);
 323 }
 324
 325
 326 /* these functions are for the spellchecker */
 327 string const BufferView::nextWord(float & value)
 328 {
 329         if (!available()) {
 330                 value = 1;
 331                 return string();
 332         }
 333
 334         return text->selectNextWordToSpellcheck(this, value);
 335 }
 336
 337
 338 void BufferView::selectLastWord()
 339 {
 340         if (!available()) return;
 341
 342         LyXCursor cur = text->selection.cursor;
 343         hideCursor();
 344         beforeChange(text);
 345         text->selection.cursor = cur;
 346         text->selectSelectedWord(this);
 347         toggleSelection(false);
 348         update(text, BufferView::SELECT|BufferView::FITCUR);
 349 }
 350
 351
 352 void BufferView::endOfSpellCheck()
 353 {
 354         if (!available()) return;
 355
 356         hideCursor();
 357         beforeChange(text);
 358         text->selectSelectedWord(this);
 359         text->clearSelection();
 360         update(text, BufferView::SELECT|BufferView::FITCUR);
 361 }
 362
 363
 364 void BufferView::replaceWord(string const & replacestring)
 365 {
 366         if (!available()) return;
 367
 368         LyXText * tt = getLyXText();
 369         hideCursor();
 370         update(tt, BufferView::SELECT|BufferView::FITCUR);
 371
 372         /* clear the selection (if there is any) */
 373         toggleSelection(false);
 374         update(tt, BufferView::SELECT|BufferView::FITCUR);
 375
 376         /* clear the selection (if there is any) */
 377         toggleSelection(false);
 378         tt->replaceSelectionWithString(this, replacestring);
 379
 380         tt->setSelectionOverString(this, replacestring);
 381
 382         // Go back so that replacement string is also spellchecked
 383         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 384                 tt->cursorLeft(this);
 385         }
 386         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 387 }
 388 // End of spellchecker stuff
 389
 390
 391 bool BufferView::lockInset(UpdatableInset * inset)
 392 {
 393         if (!theLockingInset() && inset) {
 394                 theLockingInset(inset);
 395                 return true;
 396         } else if (inset) {
 397             return theLockingInset()->lockInsetInInset(this, inset);
 398         }
 399         return false;
 400 }
 401
 402
 403 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 404 {
 405         if (available() && theLockingInset()) {
 406                 LyXCursor cursor = text->cursor;
 407                 Inset * locking_inset = theLockingInset()->getLockingInset();
 408
 409                 if ((cursor.pos() - 1 >= 0) &&
 410                     cursor.par()->isInset(cursor.pos() - 1) &&
 411                     (cursor.par()->getInset(cursor.pos() - 1) ==
 412                      locking_inset))
 413                         text->setCursor(this, cursor,
 414                                         cursor.par(), cursor.pos() - 1);
 415                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 416                 LyXText * txt = getLyXText();
 417                 if (locking_inset->isTextInset() &&
 418                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 419                     (txt->real_current_font.language() !=
 420                      buffer()->params.language
 421                      || txt->real_current_font.isVisibleRightToLeft()
 422                      != buffer()->params.language->RightToLeft()))
 423                         shape = (txt->real_current_font.isVisibleRightToLeft())
 424                                 ? LyXScreen::REVERSED_L_SHAPE
 425                                 : LyXScreen::L_SHAPE;
 426                 y += cursor.y() + theLockingInset()->insetInInsetY();
 427                 pimpl_->screen_->showManualCursor(text, x, y, asc, desc,
 428                                                   shape);
 429         }
 430 }
 431
 432
 433 void BufferView::hideLockedInsetCursor()
 434 {
 435         if (theLockingInset() && available()) {
 436                 pimpl_->screen_->hideCursor();
 437         }
 438 }
 439
 440
 441 void BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 442 {
 443         if (theLockingInset() && available()) {
 444                 y += text->cursor.y() + theLockingInset()->insetInInsetY();
 445                 if (pimpl_->screen_->fitManualCursor(text, this, x, y, asc, desc))
 446                         updateScrollbar();
 447         }
 448 }
 449
 450
 451 int BufferView::unlockInset(UpdatableInset * inset)
 452 {
 453         if (inset && theLockingInset() == inset) {
 454                 inset->insetUnlock(this);
 455                 theLockingInset(0);
 456                 finishUndo();
 457                 return 0;
 458         } else if (inset && theLockingInset() &&
 459                    theLockingInset()->unlockInsetInInset(this, inset)) {
 460                 finishUndo();
 461                 return 0;
 462         }
 463         return bufferlist.unlockInset(inset);
 464 }
 465
 466
 467 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 468 {
 469         if (!theLockingInset())
 470                 return; // shouldn't happen
 471         if (kind == Undo::EDIT) // in this case insets would not be stored!
 472                 kind = Undo::FINISH;
 473         setUndo(this, kind,
 474                 text->cursor.par(),
 475                 text->cursor.par()->next());
 476 }
 477
 478
 479 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 480 {
 481         pimpl_->updateInset(inset, mark_dirty);
 482 }
 483
 484
 485 bool BufferView::ChangeInsets(Inset::Code code,
 486                               string const & from, string const & to)
 487 {
 488         bool flag = false;
 489         LyXCursor cursor = text->cursor;
 490         LyXCursor tmpcursor = cursor;
 491         cursor.par(tmpcursor.par());
 492         cursor.pos(tmpcursor.pos());
 493
 494         ParIterator end = buffer()->par_iterator_end();
 495         for (ParIterator it = buffer()->par_iterator_begin();
 496              it != end; ++it) {
 497                 Paragraph * par = *it;
 498                 bool flag2 = false;
 499                 for (Paragraph::inset_iterator it2 = par->inset_iterator_begin();
 500                      it2 != par->inset_iterator_end(); ++it2) {
 501                         if ((*it2)->lyxCode() == code) {
 502                                 InsetCommand * inset = static_cast<InsetCommand *>(*it2);
 503                                 if (inset->getContents() == from) {
 504                                         inset->setContents(to);
 505                                         flag2 = true;
 506                                 }
 507                         }
 508                 }
 509                 if (flag2) {
 510                         flag = true;
 511 #warning Fix me
 512                         // The test it.size()==1 was needed to prevent crashes.
 513                         // How to set the cursor corretly when it.size()>1 ??
 514                         if (it.size() == 1) {
 515                                 text->setCursorIntern(this, par, 0);
 516                                 text->redoParagraphs(this, text->cursor,
 517                                                      text->cursor.par()->next());
 518                                 text->fullRebreak(this);
 519                         }
 520                 }
 521         }
 522         text->setCursorIntern(this, cursor.par(), cursor.pos());
 523         return flag;
 524 }
 525
 526
 527 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 528 {
 529         // Check if the label 'from' appears more than once
 530         vector<string> labels = buffer()->getLabelList();
 531         if (count(labels.begin(), labels.end(), from) > 1)
 532                 return false;
 533
 534         return ChangeInsets(Inset::REF_CODE, from, to);
 535 }
 536
 537
 538 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 539 {
 540
 541         vector<pair<string,string> > keys = buffer()->getBibkeyList();
 542         if (count_if(keys.begin(), keys.end(),
 543                      lyx::equal_1st_in_pair<string,string>(from))
 544             > 1)
 545                 return false;
 546
 547         return ChangeInsets(Inset::CITE_CODE, from, to);
 548 }
 549
 550
 551 UpdatableInset * BufferView::theLockingInset() const
 552 {
 553         // If NULL is not allowed we should put an Assert here. (Lgb)
 554         if (text)
 555                 return text->the_locking_inset;
 556         return 0;
 557 }
 558
 559
 560 void BufferView::theLockingInset(UpdatableInset * inset)
 561 {
 562         text->the_locking_inset = inset;
 563 }
 564
 565
 566 LyXText * BufferView::getLyXText() const
 567 {
 568         if (theLockingInset()) {
 569                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 570                 if (txt)
 571                         return txt;
 572         }
 573         return text;
 574 }
 575
 576
 577 LyXText * BufferView::getParentText(Inset * inset) const
 578 {
 579         if (inset->owner()) {
 580                 LyXText * txt = inset->getLyXText(this);
 581                 inset = inset->owner();
 582                 while (inset && inset->getLyXText(this) == txt)
 583                         inset = inset->owner();
 584                 if (inset)
 585                         return inset->getLyXText(this);
 586         }
 587         return text;
 588 }
 589
 590
 591 Language const * BufferView::getParentLanguage(Inset * inset) const
 592 {
 593         LyXText * text = getParentText(inset);
 594         return text->cursor.par()->getFontSettings(buffer()->params,
 595                                                    text->cursor.pos()).language();
 596 }