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