src/BufferView2.C

   1 a// -*- C++ -*-
   2 /* This file is part of
   3  * ======================================================
   4  *
   5  *           LyX, The Document Processor
   6  *
   7  *           Copyright 1995 Matthias Ettrich
   8  *           Copyright 1995-2001 The LyX Team.
   9  *
  10  * ====================================================== */
  11
  12 #include <config.h>
  13
  14 #include <fstream>
  15 #include <algorithm>
  16
  17 #include "BufferView.h"
  18 #include "buffer.h"
  19 #include "lyxcursor.h"
  20 #include "lyxtext.h"
  21 #include "insets/inseterror.h"
  22 #include "LyXView.h"
  23 #include "bufferlist.h"
  24 #include "support/FileInfo.h"
  25 #include "lyxscreen.h"
  26 #include "support/filetools.h"
  27 #include "lyx_gui_misc.h"
  28 #include "LaTeX.h"
  29 #include "BufferView_pimpl.h"
  30 #include "insets/insetcommand.h" //ChangeRefs
  31 #include "support/lyxfunctional.h" //equal_1st_in_pair
  32 #include "language.h"
  33 #include "gettext.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() << "Will insert file with header" << endl;
  89                 res = buffer()->readFile(lex, text->cursor.par());
  90         } else {
  91                 lyxerr.debug() << "Will insert file without header" << endl;
  92                 res = buffer()->readLyXformat2(lex, text->cursor.par());
  93         }
  94
  95         resize();
  96         return res;
  97 }
  98
  99
 100 bool BufferView::removeAutoInsets()
 101 {
 102         LyXParagraph * par = buffer()->paragraph;
 103
 104         LyXCursor tmpcursor = text->cursor;
 105         LyXCursor cursor;
 106
 107         bool a = false;
 108
 109         while (par) {
 110                 // this has to be done before the delete
 111                 text->SetCursor(this, cursor, par, 0);
 112                 if (par->AutoDeleteInsets()){
 113                         a = true;
 114                         text->RedoParagraphs(this, cursor,
 115                                              cursor.par()->next());
 116                         text->FullRebreak(this);
 117                 }
 118                 par = par->next();
 119         }
 120
 121         // avoid forbidden cursor positions caused by error removing
 122         if (tmpcursor.pos() > tmpcursor.par()->size())
 123                 tmpcursor.pos(tmpcursor.par()->size());
 124
 125         text->SetCursorIntern(this, tmpcursor.par(), tmpcursor.pos());
 126
 127         return a;
 128 }
 129
 130
 131 void BufferView::insertErrors(TeXErrors & terr)
 132 {
 133         // Save the cursor position
 134         LyXCursor cursor = text->cursor;
 135
 136         for (TeXErrors::Errors::const_iterator cit = terr.begin();
 137              cit != terr.end();
 138              ++cit) {
 139                 string const desctext((*cit).error_desc);
 140                 string const errortext((*cit).error_text);
 141                 string const msgtxt = desctext + '\n' + errortext;
 142                 int const errorrow = (*cit).error_in_line;
 143
 144                 // Insert error string for row number
 145                 int tmpid = -1;
 146                 int tmppos = -1;
 147
 148                 if (buffer()->texrow.getIdFromRow(errorrow, tmpid, tmppos)) {
 149                         buffer()->texrow.increasePos(tmpid, tmppos);
 150                 }
 151
 152                 LyXParagraph * texrowpar = 0;
 153
 154                 if (tmpid == -1) {
 155                         texrowpar = text->FirstParagraph();
 156                         tmppos = 0;
 157                 } else {
 158                         texrowpar = text->GetParFromID(tmpid);
 159                 }
 160
 161                 if (texrowpar == 0)
 162                         continue;
 163
 164                 InsetError * new_inset = new InsetError(msgtxt);
 165                 text->SetCursorIntern(this, texrowpar, tmppos);
 166                 text->InsertInset(this, new_inset);
 167                 text->FullRebreak(this);
 168         }
 169         // Restore the cursor position
 170         text->SetCursorIntern(this, cursor.par(), cursor.pos());
 171 }
 172
 173
 174 void BufferView::setCursorFromRow(int row)
 175 {
 176         int tmpid = -1;
 177         int tmppos = -1;
 178
 179         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 180
 181         LyXParagraph * texrowpar;
 182
 183         if (tmpid == -1) {
 184                 texrowpar = text->FirstParagraph();
 185                 tmppos = 0;
 186         } else {
 187                 texrowpar = text->GetParFromID(tmpid);
 188         }
 189         text->SetCursor(this, texrowpar, tmppos);
 190 }
 191
 192
 193 bool BufferView::insertInset(Inset * inset, string const & lout)
 194 {
 195         return pimpl_->insertInset(inset, lout);
 196 }
 197
 198
 199 /* This is also a buffer property (ale) */
 200 // Not so sure about that. a goto Label function can not be buffer local, just
 201 // think how this will work in a multiwindo/buffer environment, all the
 202 // cursors in all the views showing this buffer will move. (Lgb)
 203 // OK, then no cursor action should be allowed in buffer. (ale)
 204 bool BufferView::gotoLabel(string const & label)
 205
 206 {
 207         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 208              it != buffer()->inset_iterator_end(); ++it) {
 209                 vector<string> labels = (*it)->getLabelList();
 210                 if (find(labels.begin(),labels.end(),label)
 211                      != labels.end()) {
 212                         beforeChange(text);
 213                         text->SetCursor(this, it.getPar(), it.getPos());
 214                         text->selection.cursor = text->cursor;
 215                         update(text, BufferView::SELECT|BufferView::FITCUR);
 216                         return true;
 217                 }
 218         }
 219         return false;
 220 }
 221
 222
 223 void BufferView::menuUndo()
 224 {
 225         if (available()) {
 226                 owner()->message(_("Undo"));
 227                 hideCursor();
 228                 beforeChange(text);
 229                 update(text, BufferView::SELECT|BufferView::FITCUR);
 230                 if (!text->TextUndo(this))
 231                         owner()->message(_("No forther undo information"));
 232                 else
 233                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 234                 setState();
 235         }
 236 }
 237
 238
 239 void BufferView::menuRedo()
 240 {
 241         if (theLockingInset()) {
 242                 owner()->message(_("Redo not yet supported in math mode"));
 243                 return;
 244         }
 245
 246         if (available()) {
 247                 owner()->message(_("Redo"));
 248                 hideCursor();
 249                 beforeChange(text);
 250                 update(text, BufferView::SELECT|BufferView::FITCUR);
 251                 if (!text->TextRedo(this))
 252                         owner()->message(_("No further redo information"));
 253                 else
 254                         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 255                 setState();
 256         }
 257 }
 258
 259
 260 void BufferView::copyEnvironment()
 261 {
 262         if (available()) {
 263                 text->copyEnvironmentType();
 264                 // clear the selection, even if mark_set
 265                 toggleSelection();
 266                 text->ClearSelection(this);
 267                 update(text, BufferView::SELECT|BufferView::FITCUR);
 268                 owner()->message(_("Paragraph environment type copied"));
 269         }
 270 }
 271
 272
 273 void BufferView::pasteEnvironment()
 274 {
 275         if (available()) {
 276                 text->pasteEnvironmentType(this);
 277                 owner()->message(_("Paragraph environment type set"));
 278                 update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 279         }
 280 }
 281
 282
 283 void BufferView::copy()
 284 {
 285         if (available()) {
 286                 text->CopySelection(this);
 287                 // clear the selection, even if mark_set
 288                 toggleSelection();
 289                 text->ClearSelection(this);
 290                 update(text, BufferView::SELECT|BufferView::FITCUR);
 291                 owner()->message(_("Copy"));
 292         }
 293 }
 294
 295
 296 void BufferView::cut()
 297 {
 298         if (available()) {
 299                 hideCursor();
 300                 update(text, BufferView::SELECT|BufferView::FITCUR);
 301                 text->CutSelection(this);
 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(this);
 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(this);
 327         update(text, BufferView::SELECT|BufferView::FITCUR);
 328 }
 329
 330
 331
 332
 333 void BufferView::insertCorrectQuote()
 334 {
 335         char c;
 336
 337         if (text->cursor.pos())
 338                 c = text->cursor.par()->GetChar(text->cursor.pos() - 1);
 339         else
 340                 c = ' ';
 341
 342         insertInset(new InsetQuotes(c, buffer()->params));
 343 }
 344
 345
 346 /* these functions are for the spellchecker */
 347 string const BufferView::nextWord(float & value)
 348 {
 349         if (!available()) {
 350                 value = 1;
 351                 return string();
 352         }
 353
 354         return text->SelectNextWord(this, value);
 355 }
 356
 357
 358 void BufferView::selectLastWord()
 359 {
 360         if (!available()) return;
 361
 362         hideCursor();
 363         beforeChange(text);
 364         text->SelectSelectedWord(this);
 365         toggleSelection(false);
 366         update(text, BufferView::SELECT|BufferView::FITCUR);
 367 }
 368
 369
 370 void BufferView::endOfSpellCheck()
 371 {
 372         if (!available()) return;
 373
 374         hideCursor();
 375         beforeChange(text);
 376         text->SelectSelectedWord(this);
 377         text->ClearSelection(this);
 378         update(text, BufferView::SELECT|BufferView::FITCUR);
 379 }
 380
 381
 382 void BufferView::replaceWord(string const & replacestring)
 383 {
 384         if (!available()) return;
 385
 386         hideCursor();
 387         update(text, BufferView::SELECT|BufferView::FITCUR);
 388
 389         /* clear the selection (if there is any) */
 390         toggleSelection(false);
 391         update(text, BufferView::SELECT|BufferView::FITCUR);
 392
 393         /* clear the selection (if there is any) */
 394         toggleSelection(false);
 395         text->ReplaceSelectionWithString(this, replacestring);
 396
 397         text->SetSelectionOverString(this, replacestring);
 398
 399         // Go back so that replacement string is also spellchecked
 400         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 401                 text->CursorLeft(this);
 402         }
 403         update(text, BufferView::SELECT|BufferView::FITCUR|BufferView::CHANGE);
 404 }
 405 // End of spellchecker stuff
 406
 407
 408 bool BufferView::lockInset(UpdatableInset * inset)
 409 {
 410         if (!theLockingInset() && inset) {
 411                 theLockingInset(inset);
 412                 return true;
 413         } else if (inset) {
 414             return theLockingInset()->LockInsetInInset(this, inset);
 415         }
 416         return false;
 417 }
 418
 419
 420 void BufferView::showLockedInsetCursor(int x, int y, int asc, int desc)
 421 {
 422         if (theLockingInset() && available()) {
 423                 LyXCursor cursor = text->cursor;
 424                 if ((cursor.pos() - 1 >= 0) &&
 425                     (cursor.par()->GetChar(cursor.pos() - 1) ==
 426                      LyXParagraph::META_INSET) &&
 427                     (cursor.par()->GetInset(cursor.pos() - 1) ==
 428                      theLockingInset()->GetLockingInset()))
 429                         text->SetCursor(this, cursor,
 430                                         cursor.par(), cursor.pos() - 1);
 431                 LyXScreen::Cursor_Shape shape = LyXScreen::BAR_SHAPE;
 432                 LyXText * txt = getLyXText();
 433                 if (theLockingInset()->GetLockingInset()->LyxCode() ==
 434                     Inset::TEXT_CODE &&
 435                     (txt->real_current_font.language() !=
 436                      buffer()->params.language
 437                      || txt->real_current_font.isVisibleRightToLeft()
 438                      != buffer()->params.language->RightToLeft()))
 439                         shape = (txt->real_current_font.isVisibleRightToLeft())
 440                                 ? LyXScreen::REVERSED_L_SHAPE
 441                                 : LyXScreen::L_SHAPE;
 442                 y += cursor.y() + theLockingInset()->InsetInInsetY();
 443                 pimpl_->screen_->ShowManualCursor(text, x, y, asc, desc,
 444                                                   shape);
 445         }
 446 }
 447
 448
 449 void BufferView::hideLockedInsetCursor()
 450 {
 451         if (theLockingInset() && available()) {
 452                 pimpl_->screen_->HideCursor();
 453         }
 454 }
 455
 456
 457 void BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 458 {
 459         if (theLockingInset() && available()) {
 460                 y += text->cursor.y() + theLockingInset()->InsetInInsetY();
 461                 if (pimpl_->screen_->FitManualCursor(text, this, x, y, asc, desc))
 462                         updateScrollbar();
 463         }
 464 }
 465
 466
 467 int BufferView::unlockInset(UpdatableInset * inset)
 468 {
 469         if (inset && theLockingInset() == inset) {
 470                 inset->InsetUnlock(this);
 471                 theLockingInset(0);
 472                 text->FinishUndo();
 473                 return 0;
 474         } else if (inset && theLockingInset() &&
 475                    theLockingInset()->UnlockInsetInInset(this, inset)) {
 476                 text->FinishUndo();
 477                 return 0;
 478         }
 479         return bufferlist.unlockInset(inset);
 480 }
 481
 482
 483 void BufferView::lockedInsetStoreUndo(Undo::undo_kind kind)
 484 {
 485         if (!theLockingInset())
 486                 return; // shouldn't happen
 487         if (kind == Undo::EDIT) // in this case insets would not be stored!
 488                 kind = Undo::FINISH;
 489         text->SetUndo(buffer(), kind,
 490                       text->cursor.par()->previous(),
 491                       text->cursor.par()->next());
 492 }
 493
 494
 495 void BufferView::updateInset(Inset * inset, bool mark_dirty)
 496 {
 497         pimpl_->updateInset(inset, mark_dirty);
 498 }
 499
 500
 501 bool BufferView::ChangeInsets(Inset::Code code,
 502                               string const & from, string const & to)
 503 {
 504         bool flag = false;
 505         LyXParagraph * par = buffer()->paragraph;
 506         LyXCursor cursor = text->cursor;
 507         LyXCursor tmpcursor = cursor;
 508         cursor.par(tmpcursor.par());
 509         cursor.pos(tmpcursor.pos());
 510
 511         while (par) {
 512                 bool flag2 = false;
 513                 for (LyXParagraph::inset_iterator it = par->inset_iterator_begin();
 514                      it != par->inset_iterator_end(); ++it) {
 515                         if ((*it)->LyxCode() == code) {
 516                                 InsetCommand * inset = static_cast<InsetCommand *>(*it);
 517                                 if (inset->getContents() == from) {
 518                                         inset->setContents(to);
 519                                         flag2 = true;
 520                                 }
 521                         }
 522                 }
 523                 if (flag2) {
 524                         flag = true;
 525                         // this is possible now, since SetCursor takes
 526                         // care about footnotes
 527                         text->SetCursorIntern(this, par, 0);
 528                         text->RedoParagraphs(this, text->cursor,
 529                                              text->cursor.par()->next());
 530                         text->FullRebreak(this);
 531                 }
 532                 par = par->next();
 533         }
 534         text->SetCursorIntern(this, cursor.par(), cursor.pos());
 535         return flag;
 536 }
 537
 538
 539 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 540 {
 541         // Check if the label 'from' appears more than once
 542         vector<string> labels = buffer()->getLabelList();
 543         if (count(labels.begin(), labels.end(), from) > 1)
 544                 return false;
 545
 546         return ChangeInsets(Inset::REF_CODE, from, to);
 547 }
 548
 549
 550 bool BufferView::ChangeCitationsIfUnique(string const & from, string const & to)
 551 {
 552
 553         vector<pair<string,string> > keys = buffer()->getBibkeyList();
 554         if (count_if(keys.begin(), keys.end(),
 555                      lyx::equal_1st_in_pair<string,string>(from))
 556             > 1)
 557                 return false;
 558
 559         return ChangeInsets(Inset::CITE_CODE, from, to);
 560 }
 561
 562
 563 UpdatableInset * BufferView::theLockingInset() const
 564 {
 565         // If NULL is not allowed we should put an Assert here. (Lgb)
 566         if (text)
 567                 return text->the_locking_inset;
 568         return 0;
 569 }
 570
 571
 572 void BufferView::theLockingInset(UpdatableInset * inset)
 573 {
 574         text->the_locking_inset = inset;
 575 }
 576
 577
 578 LyXText * BufferView::getLyXText() const
 579 {
 580         if (theLockingInset()) {
 581                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 582                 if (txt)
 583                         return txt;
 584         }
 585         return text;
 586 }
 587
 588
 589 LyXText * BufferView::getParentText(Inset * inset) const
 590 {
 591         if (inset->owner()) {
 592                 LyXText * txt = inset->getLyXText(this);
 593                 inset = inset->owner();
 594                 while (inset && inset->getLyXText(this) == txt)
 595                         inset = inset->owner();
 596                 if (inset)
 597                         return inset->getLyXText(this);
 598         }
 599         return text;
 600 }
 601
 602
 603 Language const * BufferView::getParentLanguage(Inset * inset) const
 604 {
 605         LyXText * text = getParentText(inset);
 606         return text->cursor.par()->GetFontSettings(buffer()->params,
 607                                                    text->cursor.pos()).language();
 608 }