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         LyXCursor tmpcursor = text->cursor;
 106         LyXCursor cursor;
 107         bool found = false;
 108
 109         ParIterator end = buffer()->par_iterator_end();
 110         for (ParIterator it = buffer()->par_iterator_begin();
 111              it != end; ++it) {
 112                 Paragraph * par = *it;
 113                 // this has to be done before the delete
 114                 if (par->autoDeleteInsets()) {
 115                         found = true;
 116 #ifdef WITH_WARNINGS
 117 #warning FIXME
 118 #endif
 119                         // The test it.size()==1 was needed to prevent crashes.
 120                         if (it.size() == 1) {
 121                                 text->setCursor(this, cursor, par, 0);
 122                                 text->redoParagraphs(this, cursor,
 123                                                      cursor.par()->next());
 124                                 text->fullRebreak(this);
 125                         }
 126                 }
 127         }
 128
 129         // avoid forbidden cursor positions caused by error removing
 130         if (tmpcursor.pos() > tmpcursor.par()->size())
 131                 tmpcursor.pos(tmpcursor.par()->size());
 132
 133         text->setCursorIntern(this, tmpcursor.par(), tmpcursor.pos());
 134
 135         return found;
 136 }
 137
 138
 139 void BufferView::insertErrors(TeXErrors & terr)
 140 {
 141         // Save the cursor position
 142         LyXCursor cursor = text->cursor;
 143
 144         for (TeXErrors::Errors::const_iterator cit = terr.begin();
 145              cit != terr.end();
 146              ++cit) {
 147                 string const desctext(cit->error_desc);
 148                 string const errortext(cit->error_text);
 149                 string const msgtxt = desctext + '\n' + errortext;
 150                 int const errorrow = cit->error_in_line;
 151
 152                 // Insert error string for row number
 153                 int tmpid = -1;
 154                 int tmppos = -1;
 155
 156                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 157                         buffer()->texrow.increasePos(tmpid, tmppos);
 158                 }
 159
 160                 Paragraph * texrowpar = 0;
 161
 162                 if (tmpid == -1) {
 163                         texrowpar = text->firstParagraph();
 164                         tmppos = 0;
 165                 } else {
 166                         texrowpar = buffer()->getParFromID(tmpid);
 167                 }
 168
 169                 if (texrowpar == 0)
 170                         continue;
 171
 172                 InsetError * new_inset = new InsetError(msgtxt);
 173                 text->setCursorIntern(this, texrowpar, tmppos);
 174                 text->insertInset(this, new_inset);
 175                 text->fullRebreak(this);
 176         }
 177         // Restore the cursor position
 178         text->setCursorIntern(this, cursor.par(), cursor.pos());
 179 }
 180
 181
 182 void BufferView::setCursorFromRow(int row)
 183 {
 184         int tmpid = -1;
 185         int tmppos = -1;
 186
 187         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 188
 189         Paragraph * texrowpar;
 190
 191         if (tmpid == -1) {
 192                 texrowpar = text->firstParagraph();
 193                 tmppos = 0;
 194         } else {
 195                 texrowpar = buffer()->getParFromID(tmpid);
 196         }
 197         text->setCursor(this, texrowpar, tmppos);
 198 }
 199
 200
 201 bool BufferView::insertInset(Inset * inset, string const & lout)
 202 {
 203         return pimpl_->insertInset(inset, lout);
 204 }
 205
 206
 207 /* This is also a buffer property (ale) */
 208 // Not so sure about that. a goto Label function can not be buffer local, just
 209 // think how this will work in a multiwindo/buffer environment, all the
 210 // cursors in all the views showing this buffer will move. (Lgb)
 211 // OK, then no cursor action should be allowed in buffer. (ale)
 212 bool BufferView::gotoLabel(string const & label)
 213
 214 {
 215         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 216              it != buffer()->inset_iterator_end(); ++it) {
 217                 vector<string> labels = (*it)->getLabelList();
 218                 if (find(labels.begin(),labels.end(),label)
 219                      != labels.end()) {
 220                         beforeChange(text);
 221                         text->setCursor(this, it.getPar(), it.getPos());
 222                         text->selection.cursor = text->cursor;
 223                         update(text, BufferView::SELECT|BufferView::FITCUR);
 224                         return true;
 225                 }
 226         }
 227         return false;
 228 }
 229
 230
 231 void BufferView::menuUndo()
 232 {
 233         if (available()) {
 234                 owner()->message(_("Undo"));
 235                 hideCursor();
 236                 beforeChange(text);
 237                 update(text, BufferView::SELECT|BufferView::FITCUR);
 238                 if (!textUndo(this))
 239                         owner()->message(_("No further undo information"));
 240                 else
 241                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 242                 setState();
 243         }
 244 }
 245
 246
 247 void BufferView::menuRedo()
 248 {
 249         if (theLockingInset()) {
 250                 owner()->message(_("Redo not yet supported in math mode"));
 251                 return;
 252         }
 253
 254         if (available()) {
 255                 owner()->message(_("Redo"));
 256                 hideCursor();
 257                 beforeChange(text);
 258                 update(text, BufferView::SELECT|BufferView::FITCUR);
 259                 if (!textRedo(this))
 260                         owner()->message(_("No further redo information"));
 261                 else
 262                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 263                 setState();
 264         }
 265 }
 266
 267
 268 void BufferView::copyEnvironment()
 269 {
 270         if (available()) {
 271                 text->copyEnvironmentType();
 272                 owner()->message(_("Paragraph environment type copied"));
 273         }
 274 }
 275
 276
 277 void BufferView::pasteEnvironment()
 278 {
 279         if (available()) {
 280                 text->pasteEnvironmentType(this);
 281                 owner()->message(_("Paragraph environment type set"));
 282                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 283         }
 284 }
 285
 286
 287 void BufferView::copy()
 288 {
 289         if (available()) {
 290                 text->copySelection(this);
 291                 owner()->message(_("Copy"));
 292         }
 293 }
 294
 295
 296 void BufferView::cut(bool realcut)
 297 {
 298         if (available()) {
 299                 hideCursor();
 300                 update(text, BufferView::SELECT|BufferView::FITCUR);
 301                 text->cutSelection(this, true, realcut);
 302                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 303                 owner()->message(_("Cut"));
 304         }
 305 }
 306
 307
 308 void BufferView::paste()
 309 {
 310         if (!available()) return;
 311
 312         owner()->message(_("Paste"));
 313
 314         hideCursor();
 315         // clear the selection
 316         toggleSelection();
 317         text->clearSelection();
 318         update(text, BufferView::SELECT|BufferView::FITCUR);
 319
 320         // paste
 321         text->pasteSelection(this);
 322         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 323
 324         // clear the selection
 325         toggleSelection();
 326         text->clearSelection();
 327         update(text, BufferView::SELECT|BufferView::FITCUR);
 328 }
 329
 330
 331 /* these functions are for the spellchecker */
 332 string const BufferView::nextWord(float & value)
 333 {
 334         if (!available()) {
 335                 value = 1;
 336                 return string();
 337         }
 338
 339         return text->selectNextWordToSpellcheck(this, value);
 340 }
 341
 342
 343 void BufferView::selectLastWord()
 344 {
 345         if (!available()) return;
 346
 347         LyXCursor cur = text->selection.cursor;
 348         hideCursor();
 349         beforeChange(text);
 350         text->selection.cursor = cur;
 351         text->selectSelectedWord(this);
 352         toggleSelection(false);
 353         update(text, BufferView::SELECT|BufferView::FITCUR);
 354 }
 355
 356
 357 void BufferView::endOfSpellCheck()
 358 {
 359         if (!available()) return;
 360
 361         hideCursor();
 362         beforeChange(text);
 363         text->selectSelectedWord(this);
 364         text->clearSelection();
 365         update(text, BufferView::SELECT|BufferView::FITCUR);
 366 }
 367
 368
 369 void BufferView::replaceWord(string const & replacestring)
 370 {
 371         if (!available()) return;
 372
 373         LyXText * tt = getLyXText();
 374         hideCursor();
 375         update(tt, BufferView::SELECT|BufferView::FITCUR);
 376
 377         /* clear the selection (if there is any) */
 378         toggleSelection(false);
 379         update(tt, BufferView::SELECT|BufferView::FITCUR);
 380
 381         /* clear the selection (if there is any) */
 382         toggleSelection(false);
 383         tt->replaceSelectionWithString(this, replacestring);
 384
 385         tt->setSelectionOverString(this, replacestring);
 386
 387         // Go back so that replacement string is also spellchecked
 388         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 389                 tt->cursorLeft(this);
 390         }
 391         update(tt, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 392 }
 393 // End of spellchecker stuff
 394
 395
 396 bool BufferView::lockInset(UpdatableInset * inset)
 397 {
 398         // don't relock if we're already locked
 399         if (theLockingInset() == inset)
 400                 return true;
 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()->isInset(cursor.pos() - 1) &&
 419                     (cursor.par()->getInset(cursor.pos() - 1) ==
 420                      locking_inset))
 421                         text->setCursor(this, cursor,
 422                                         cursor.par(), cursor.pos() - 1);
 423                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 424                 LyXText * txt = getLyXText();
 425                 if (locking_inset->isTextInset() &&
 426                     locking_inset->lyxCode() != Inset::ERT_CODE &&
 427                     (txt->real_current_font.language() !=
 428                      buffer()->params.language
 429                      || txt->real_current_font.isVisibleRightToLeft()
 430                      != buffer()->params.language->RightToLeft()))
 431                         shape = (txt->real_current_font.isVisibleRightToLeft())
 432                                 ? LyXScreen::REVERSED_L_SHAPE
 433                                 : LyXScreen::L_SHAPE;
 434                 y += cursor.y() + theLockingInset()->insetInInsetY();
 435                 pimpl_->screen_->showManualCursor(text, x, y, asc, desc,
 436                                                   shape);
 437         }
 438 }
 439
 440
 441 void BufferView::hideLockedInsetCursor()
 442 {
 443         if (theLockingInset() && available()) {
 444                 pimpl_->screen_->hideCursor();
 445         }
 446 }
 447
 448
 449 void BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 450 {
 451         if (theLockingInset() && available()) {
 452                 y += text->cursor.y() + theLockingInset()->insetInInsetY();
 453                 if (pimpl_->screen_->fitManualCursor(text, this, x, y, asc, desc))
 454                         updateScrollbar();
 455         }
 456 }
 457
 458
 459 int BufferView::unlockInset(UpdatableInset * inset)
 460 {
 461         if (inset && theLockingInset() == inset) {
 462                 inset->insetUnlock(this);
 463                 theLockingInset(0);
 464                 // make sure we update the combo !
 465                 owner()->setLayout(getLyXText()->cursor.par()->getLayout());
 466                 finishUndo();
 467                 return 0;
 468         } else if (inset && theLockingInset() &&
 469                    theLockingInset()->unlockInsetInInset(this, inset)) {
 470                 // owner inset has updated the layout combo
 471                 finishUndo();
 472                 return 0;
 473         }
 474         return bufferlist.unlockInset(inset);
 475 }
 476
 477
 478 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 479 {
 480         if (!theLockingInset())
 481                 return; // shouldn't happen
 482         if (kind == Undo::EDIT) // in this case insets would not be stored!
 483                 kind = Undo::FINISH;
 484         setUndo(this, kind,
 485                 text->cursor.par(),
 486                 text->cursor.par()->next());
 487 }
 488
 489
 490 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 491 {
 492         pimpl_->updateInset(inset, mark_dirty);
 493 }
 494
 495
 496 bool BufferView::ChangeInsets(Inset::Code code,
 497                               string const & from, string const & to)
 498 {
 499         bool need_update = false;
 500         LyXCursor cursor = text->cursor;
 501         LyXCursor tmpcursor = cursor;
 502         cursor.par(tmpcursor.par());
 503         cursor.pos(tmpcursor.pos());
 504
 505         ParIterator end = buffer()->par_iterator_end();
 506         for (ParIterator it = buffer()->par_iterator_begin();
 507              it != end; ++it) {
 508                 Paragraph * par = *it;
 509                 bool changed_inset = false;
 510                 for (Paragraph::inset_iterator it2 = par->inset_iterator_begin();
 511                      it2 != par->inset_iterator_end(); ++it2) {
 512                         if ((*it2)->lyxCode() == code) {
 513                                 InsetCommand * inset = static_cast<InsetCommand *>(*it2);
 514                                 if (inset->getContents() == from) {
 515                                         inset->setContents(to);
 516                                         changed_inset = true;
 517                                 }
 518                         }
 519                 }
 520                 if (changed_inset) {
 521                         need_update = true;
 522 #ifdef WITH_WARNINGS
 523 #warning FIXME
 524 #endif
 525                         // The test it.size()==1 was needed to prevent crashes.
 526                         // How to set the cursor corretly when it.size()>1 ??
 527                         if (it.size() == 1) {
 528                                 text->setCursorIntern(this, par, 0);
 529                                 text->redoParagraphs(this, text->cursor,
 530                                                      text->cursor.par()->next());
 531                                 text->fullRebreak(this);
 532                         }
 533                 }
 534         }
 535         text->setCursorIntern(this, cursor.par(), cursor.pos());
 536         return need_update;
 537 }
 538
 539
 540 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 541 {
 542         // Check if the label 'from' appears more than once
 543         vector<string> labels = buffer()->getLabelList();
 544         if (count(labels.begin(), labels.end(), from) > 1)
 545                 return false;
 546
 547         return ChangeInsets(Inset::REF_CODE, from, to);
 548 }
 549
 550
 551 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 552 {
 553
 554         vector<pair<string,string> > keys = buffer()->getBibkeyList();
 555         if (count_if(keys.begin(), keys.end(),
 556                      lyx::equal_1st_in_pair<string,string>(from))
 557             > 1)
 558                 return false;
 559
 560         return ChangeInsets(Inset::CITE_CODE, from, to);
 561 }
 562
 563
 564 UpdatableInset * BufferView::theLockingInset() const
 565 {
 566         // If NULL is not allowed we should put an Assert here. (Lgb)
 567         if (text)
 568                 return text->the_locking_inset;
 569         return 0;
 570 }
 571
 572
 573 void BufferView::theLockingInset(UpdatableInset * inset)
 574 {
 575         text->the_locking_inset = inset;
 576 }
 577
 578
 579 LyXText * BufferView::getLyXText() const
 580 {
 581         if (theLockingInset()) {
 582                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 583                 if (txt)
 584                         return txt;
 585         }
 586         return text;
 587 }
 588
 589
 590 LyXText * BufferView::getParentText(Inset * inset) const
 591 {
 592         if (inset->owner()) {
 593                 LyXText * txt = inset->getLyXText(this);
 594                 inset = inset->owner();
 595                 while (inset && inset->getLyXText(this) == txt)
 596                         inset = inset->owner();
 597                 if (inset)
 598                         return inset->getLyXText(this);
 599         }
 600         return text;
 601 }
 602
 603
 604 Language const * BufferView::getParentLanguage(Inset * inset) const
 605 {
 606         LyXText * text = getParentText(inset);
 607         return text->cursor.par()->getFontSettings(buffer()->params,
 608                                                    text->cursor.pos()).language();
 609 }