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