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(this);
 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(this);
 292                 update(text, BufferView::SELECT|BufferView::FITCUR);
 293                 owner()->message(_("Copy"));
 294         }
 295 }
 296
 297
 298 void BufferView::cut()
 299 {
 300         if (available()) {
 301                 hideCursor();
 302                 update(text, BufferView::SELECT|BufferView::FITCUR);
 303                 text->cutSelection(this);
 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(this);
 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(this);
 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         hideCursor();
 350         beforeChange(text);
 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(this);
 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         if (!theLockingInset() && inset) {
 399                 theLockingInset(inset);
 400                 return true;
 401         } else if (inset) {
 402             return theLockingInset()->lockInsetInInset(this, inset);
 403         }
 404         return false;
 405 }
 406
 407
 408 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 409 {
 410         if (theLockingInset() && available()) {
 411                 LyXCursor cursor = text->cursor;
 412                 if ((cursor.pos() - 1 >= 0) &&
 413                     (cursor.par()->getChar(cursor.pos() - 1) ==
 414                      Paragraph::META_INSET) &&
 415                     (cursor.par()->getInset(cursor.pos() - 1) ==
 416                      theLockingInset()->getLockingInset()))
 417                         text->setCursor(this, cursor,
 418                                         cursor.par(), cursor.pos() - 1);
 419                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 420                 LyXText * txt = getLyXText();
 421                 if (theLockingInset()->getLockingInset()->lyxCode() ==
 422                     Inset::TEXT_CODE &&
 423                     (txt->real_current_font.language() !=
 424                      buffer()->params.language
 425                      || txt->real_current_font.isVisibleRightToLeft()
 426                      != buffer()->params.language->RightToLeft()))
 427                         shape = (txt->real_current_font.isVisibleRightToLeft())
 428                                 ? LyXScreen::REVERSED_L_SHAPE
 429                                 : LyXScreen::L_SHAPE;
 430                 y += cursor.y() + theLockingInset()->insetInInsetY();
 431                 pimpl_->screen_->showManualCursor(text, x, y, asc, desc,
 432                                                   shape);
 433         }
 434 }
 435
 436
 437 void BufferView::hideLockedInsetCursor()
 438 {
 439         if (theLockingInset() && available()) {
 440                 pimpl_->screen_->hideCursor();
 441         }
 442 }
 443
 444
 445 void BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 446 {
 447         if (theLockingInset() && available()) {
 448                 y += text->cursor.y() + theLockingInset()->insetInInsetY();
 449                 if (pimpl_->screen_->fitManualCursor(text, this, x, y, asc, desc))
 450                         updateScrollbar();
 451         }
 452 }
 453
 454
 455 int BufferView::unlockInset(UpdatableInset * inset)
 456 {
 457         if (inset && theLockingInset() == inset) {
 458                 inset->insetUnlock(this);
 459                 theLockingInset(0);
 460                 finishUndo();
 461                 return 0;
 462         } else if (inset && theLockingInset() &&
 463                    theLockingInset()->unlockInsetInInset(this, inset)) {
 464                 finishUndo();
 465                 return 0;
 466         }
 467         return bufferlist.unlockInset(inset);
 468 }
 469
 470
 471 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 472 {
 473         if (!theLockingInset())
 474                 return; // shouldn't happen
 475         if (kind == Undo::EDIT) // in this case insets would not be stored!
 476                 kind = Undo::FINISH;
 477         setUndo(this, kind,
 478                 text->cursor.par(),
 479                 text->cursor.par()->next());
 480 }
 481
 482
 483 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 484 {
 485         pimpl_->updateInset(inset, mark_dirty);
 486 }
 487
 488
 489 bool BufferView::ChangeInsets(Inset::Code code,
 490                               string const & from, string const & to)
 491 {
 492         bool flag = false;
 493         Paragraph * par = buffer()->paragraph;
 494         LyXCursor cursor = text->cursor;
 495         LyXCursor tmpcursor = cursor;
 496         cursor.par(tmpcursor.par());
 497         cursor.pos(tmpcursor.pos());
 498
 499         while (par) {
 500                 bool flag2 = false;
 501                 for (Paragraph::inset_iterator it = par->inset_iterator_begin();
 502                      it != par->inset_iterator_end(); ++it) {
 503                         if ((*it)->lyxCode() == code) {
 504                                 InsetCommand * inset = static_cast<InsetCommand *>(*it);
 505                                 if (inset->getContents() == from) {
 506                                         inset->setContents(to);
 507                                         flag2 = true;
 508                                 }
 509                         }
 510                 }
 511                 if (flag2) {
 512                         flag = true;
 513                         // this is possible now, since SetCursor takes
 514                         // care about footnotes
 515                         text->setCursorIntern(this, par, 0);
 516                         text->redoParagraphs(this, text->cursor,
 517                                              text->cursor.par()->next());
 518                         text->fullRebreak(this);
 519                 }
 520                 par = par->next();
 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 }