src/BufferView.C

   1 /**
   2  * \file BufferView.C
   3  * Copyright 1995-2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author John Levon <moz@compsoc.man.ac.uk>
   8  */
   9
  10 #include <config.h>
  11
  12 #include "BufferView.h"
  13 #include "BufferView_pimpl.h"
  14
  15 #include "LaTeX.h"
  16 #include "ParagraphParameters.h"
  17 #include "WordLangTuple.h"
  18 #include "buffer.h"
  19 #include "bufferlist.h"
  20 #include "debug.h"
  21 #include "gettext.h"
  22 #include "errorlist.h"
  23 #include "iterators.h"
  24 #include "language.h"
  25 #include "lyxcursor.h"
  26 #include "lyxlex.h"
  27 #include "lyxtext.h"
  28 #include "undo_funcs.h"
  29 #include "changes.h"
  30 #include "paragraph_funcs.h"
  31
  32 #include "frontends/Alert.h"
  33 #include "frontends/Dialogs.h"
  34 #include "frontends/LyXView.h"
  35 #include "frontends/WorkArea.h"
  36 #include "frontends/screen.h"
  37
  38 #include "insets/insetcommand.h" // ChangeRefs
  39 #include "insets/updatableinset.h"
  40
  41 #include "support/FileInfo.h"
  42 #include "support/filetools.h"
  43 #include "support/types.h"
  44 #include "support/lyxalgo.h" // lyx_count
  45
  46 #include <fstream>
  47
  48 extern BufferList bufferlist;
  49
  50 using lyx::pos_type;
  51 using namespace lyx::support;
  52
  53 using std::pair;
  54 using std::endl;
  55 using std::ifstream;
  56 using std::vector;
  57 using std::find;
  58 using std::count_if;
  59
  60
  61 BufferView::BufferView(LyXView * owner, int xpos, int ypos,
  62                        int width, int height)
  63         : pimpl_(new Pimpl(this, owner, xpos, ypos, width, height))
  64 {
  65         text = 0;
  66 }
  67
  68
  69 BufferView::~BufferView()
  70 {
  71         delete text;
  72         delete pimpl_;
  73 }
  74
  75
  76 Buffer * BufferView::buffer() const
  77 {
  78         return pimpl_->buffer_;
  79 }
  80
  81
  82 LyXScreen & BufferView::screen() const
  83 {
  84         return pimpl_->screen();
  85 }
  86
  87
  88 LyXView * BufferView::owner() const
  89 {
  90         return pimpl_->owner_;
  91 }
  92
  93
  94 Painter & BufferView::painter() const
  95 {
  96         return pimpl_->painter();
  97 }
  98
  99
 100 void BufferView::buffer(Buffer * b)
 101 {
 102         pimpl_->buffer(b);
 103 }
 104
 105
 106 bool BufferView::newFile(string const & fn, string const & tn, bool named)
 107 {
 108         return pimpl_->newFile(fn, tn, named);
 109 }
 110
 111
 112 bool BufferView::loadLyXFile(string const & fn, bool tl)
 113 {
 114         return pimpl_->loadLyXFile(fn, tl);
 115 }
 116
 117
 118 void BufferView::reload()
 119 {
 120         string const fn = buffer()->fileName();
 121         if (bufferlist.close(buffer(), false))
 122                 loadLyXFile(fn);
 123 }
 124
 125
 126 void BufferView::resize()
 127 {
 128         if (pimpl_->buffer_)
 129                 pimpl_->resizeCurrentBuffer();
 130 }
 131
 132
 133 void BufferView::repaint()
 134 {
 135         pimpl_->repaint();
 136 }
 137
 138
 139 bool BufferView::fitCursor()
 140 {
 141         return pimpl_->fitCursor();
 142 }
 143
 144
 145 void BufferView::update()
 146 {
 147         pimpl_->update();
 148 }
 149
 150
 151 void BufferView::updateScrollbar()
 152 {
 153         pimpl_->updateScrollbar();
 154 }
 155
 156
 157 void BufferView::scrollDocView(int value)
 158 {
 159         pimpl_->scrollDocView(value);
 160 }
 161
 162
 163 void BufferView::redoCurrentBuffer()
 164 {
 165         pimpl_->redoCurrentBuffer();
 166 }
 167
 168
 169 bool BufferView::available() const
 170 {
 171         return pimpl_->available();
 172 }
 173
 174
 175 Change const BufferView::getCurrentChange()
 176 {
 177         return pimpl_->getCurrentChange();
 178 }
 179
 180
 181 void BufferView::beforeChange(LyXText * text)
 182 {
 183         pimpl_->beforeChange(text);
 184 }
 185
 186
 187 void BufferView::savePosition(unsigned int i)
 188 {
 189         pimpl_->savePosition(i);
 190 }
 191
 192
 193 void BufferView::restorePosition(unsigned int i)
 194 {
 195         pimpl_->restorePosition(i);
 196 }
 197
 198
 199 bool BufferView::isSavedPosition(unsigned int i)
 200 {
 201         return pimpl_->isSavedPosition(i);
 202 }
 203
 204
 205 void BufferView::update(LyXText * text, UpdateCodes f)
 206 {
 207         pimpl_->update(text, f);
 208 }
 209
 210
 211 void BufferView::update(UpdateCodes f)
 212 {
 213         pimpl_->update(f);
 214 }
 215
 216
 217 void BufferView::switchKeyMap()
 218 {
 219         pimpl_->switchKeyMap();
 220 }
 221
 222
 223 void BufferView::insetUnlock()
 224 {
 225         pimpl_->insetUnlock();
 226 }
 227
 228
 229 int BufferView::workWidth() const
 230 {
 231         return pimpl_->workarea().workWidth();
 232 }
 233
 234
 235 void BufferView::toggleSelection(bool b)
 236 {
 237         pimpl_->toggleSelection(b);
 238 }
 239
 240
 241 void BufferView::center()
 242 {
 243         pimpl_->center();
 244 }
 245
 246
 247 string const BufferView::getClipboard() const
 248 {
 249         return pimpl_->workarea().getClipboard();
 250 }
 251
 252
 253 void BufferView::stuffClipboard(string const & stuff) const
 254 {
 255         pimpl_->stuffClipboard(stuff);
 256 }
 257
 258
 259 BufferView::UpdateCodes operator|(BufferView::UpdateCodes uc1,
 260                                   BufferView::UpdateCodes uc2)
 261 {
 262         return static_cast<BufferView::UpdateCodes>
 263                 (static_cast<int>(uc1) | static_cast<int>(uc2));
 264 }
 265
 266
 267 bool BufferView::dispatch(FuncRequest const & ev)
 268 {
 269         return pimpl_->dispatch(ev);
 270 }
 271
 272
 273 void BufferView::scroll(int lines)
 274 {
 275         pimpl_->scroll(lines);
 276 }
 277
 278
 279 // Inserts a file into current document
 280 bool BufferView::insertLyXFile(string const & filen)
 281         //
 282         // Copyright CHT Software Service GmbH
 283         // Uwe C. Schroeder
 284         //
 285         // Insert a LyXformat - file into current buffer
 286         //
 287         // Moved from lyx_cb.C (Lgb)
 288 {
 289         if (filen.empty())
 290                 return false;
 291
 292         string const fname = MakeAbsPath(filen);
 293
 294         // check if file exist
 295         FileInfo const fi(fname);
 296
 297         if (!fi.readable()) {
 298                 string const file = MakeDisplayPath(fname, 50);
 299                 string const text =
 300                         bformat(_("The specified document\n%1$s\ncould not be read."), file);
 301                 Alert::error(_("Could not read document"), text);
 302                 return false;
 303         }
 304
 305         beforeChange(text);
 306
 307         ifstream ifs(fname.c_str());
 308         if (!ifs) {
 309                 string const file = MakeDisplayPath(fname, 50);
 310                 string const text =
 311                         bformat(_("Could not open the specified document %1$s\n"), file);
 312                 Alert::error(_("Could not open file"), text);
 313                 return false;
 314         }
 315
 316         int const c = ifs.peek();
 317
 318         LyXLex lex(0, 0);
 319         lex.setStream(ifs);
 320
 321         bool res = true;
 322
 323         text->breakParagraph(buffer()->paragraphs);
 324
 325         if (c == '#') {
 326                 // FIXME: huh ? No we won't !
 327                 lyxerr[Debug::INFO] << "Will insert file with header" << endl;
 328                 res = buffer()->readFile(lex, fname, ParagraphList::iterator(text->cursor.par()));
 329         } else {
 330                 lyxerr[Debug::INFO] << "Will insert file without header"
 331                                     << endl;
 332                 res = buffer()->readBody(lex, ParagraphList::iterator(text->cursor.par()));
 333         }
 334
 335         resize();
 336         return res;
 337 }
 338
 339
 340 void BufferView::showErrorList(string const & action) const
 341 {
 342         if (getErrorList().size()) {
 343                 string const title = bformat(_("LyX: %1$s errors (%2$s)"), action, buffer()->fileName());
 344                 owner()->getDialogs().show("errorlist", title);
 345                 pimpl_->errorlist_.clear();
 346         }
 347 }
 348
 349
 350 ErrorList const &
 351 BufferView::getErrorList() const
 352 {
 353         return pimpl_->errorlist_;
 354 }
 355
 356
 357 void BufferView::setCursorFromRow(int row)
 358 {
 359         int tmpid = -1;
 360         int tmppos = -1;
 361
 362         buffer()->texrow.getIdFromRow(row, tmpid, tmppos);
 363
 364         ParagraphList::iterator texrowpar;
 365
 366         if (tmpid == -1) {
 367                 texrowpar = text->ownerParagraphs().begin();
 368                 tmppos = 0;
 369         } else {
 370                 texrowpar = buffer()->getParFromID(tmpid).pit();
 371         }
 372         text->setCursor(texrowpar, tmppos);
 373 }
 374
 375
 376 bool BufferView::insertInset(InsetOld * inset, string const & lout)
 377 {
 378         return pimpl_->insertInset(inset, lout);
 379 }
 380
 381
 382 void BufferView::gotoLabel(string const & label)
 383 {
 384         for (Buffer::inset_iterator it = buffer()->inset_iterator_begin();
 385              it != buffer()->inset_iterator_end(); ++it) {
 386                 vector<string> labels;
 387                 it->getLabelList(labels);
 388                 if (find(labels.begin(),labels.end(),label)
 389                      != labels.end()) {
 390                         beforeChange(text);
 391                         text->setCursor(it.getPar(), it.getPos());
 392                         text->selection.cursor = text->cursor;
 393                         update(text, BufferView::SELECT);
 394                         return;
 395                 }
 396         }
 397 }
 398
 399
 400 void BufferView::undo()
 401 {
 402         if (!available())
 403                 return;
 404
 405         owner()->message(_("Undo"));
 406         beforeChange(text);
 407         update(text, BufferView::SELECT);
 408         if (!textUndo(this))
 409                 owner()->message(_("No further undo information"));
 410         else
 411                 update(text, BufferView::SELECT);
 412         switchKeyMap();
 413 }
 414
 415
 416 void BufferView::redo()
 417 {
 418         if (!available())
 419                 return;
 420
 421         owner()->message(_("Redo"));
 422         beforeChange(text);
 423         update(text, BufferView::SELECT);
 424         if (!textRedo(this))
 425                 owner()->message(_("No further redo information"));
 426         else
 427                 update(text, BufferView::SELECT);
 428         switchKeyMap();
 429 }
 430
 431
 432 // these functions are for the spellchecker
 433 WordLangTuple const BufferView::nextWord(float & value)
 434 {
 435         if (!available()) {
 436                 value = 1;
 437                 return WordLangTuple();
 438         }
 439
 440         return text->selectNextWordToSpellcheck(value);
 441 }
 442
 443
 444 void BufferView::selectLastWord()
 445 {
 446         if (!available())
 447                 return;
 448
 449         LyXCursor cur = text->selection.cursor;
 450         beforeChange(text);
 451         text->selection.cursor = cur;
 452         text->selectSelectedWord();
 453         toggleSelection(false);
 454         update(text, BufferView::SELECT);
 455 }
 456
 457
 458 void BufferView::endOfSpellCheck()
 459 {
 460         if (!available()) return;
 461
 462         beforeChange(text);
 463         text->selectSelectedWord();
 464         text->clearSelection();
 465         update(text, BufferView::SELECT);
 466 }
 467
 468
 469 void BufferView::replaceWord(string const & replacestring)
 470 {
 471         if (!available())
 472                 return;
 473
 474         LyXText * tt = getLyXText();
 475         update(tt, BufferView::SELECT);
 476
 477         // clear the selection (if there is any)
 478         toggleSelection(false);
 479         update(tt, BufferView::SELECT);
 480
 481         // clear the selection (if there is any)
 482         toggleSelection(false);
 483         tt->replaceSelectionWithString(replacestring);
 484
 485         tt->setSelectionRange(replacestring.length());
 486
 487         // Go back so that replacement string is also spellchecked
 488         for (string::size_type i = 0; i < replacestring.length() + 1; ++i) {
 489                 tt->cursorLeft(this);
 490         }
 491         update(tt, BufferView::SELECT);
 492
 493         // FIXME: should be done through LFUN
 494         buffer()->markDirty();
 495         fitCursor();
 496 }
 497 // End of spellchecker stuff
 498
 499
 500 bool BufferView::lockInset(UpdatableInset * inset)
 501 {
 502         if (!inset)
 503                 return false;
 504         // don't relock if we're already locked
 505         if (theLockingInset() == inset)
 506                 return true;
 507         if (!theLockingInset()) {
 508                 // first check if it's the inset under the cursor we want lock
 509                 // should be most of the time
 510                 if (text->cursor.pos() < text->cursor.par()->size()
 511                     && text->cursor.par()->getChar(text->cursor.pos()) ==
 512                     Paragraph::META_INSET) {
 513                         InsetOld * in = text->cursor.par()->getInset(text->cursor.pos());
 514                         if (inset == in) {
 515                                 theLockingInset(inset);
 516                                 return true;
 517                         }
 518                 }
 519                 // Then do a deep look of the inset and lock the right one
 520                 int const id = inset->id();
 521                 ParagraphList::iterator pit = buffer()->paragraphs.begin();
 522                 ParagraphList::iterator pend = buffer()->paragraphs.end();
 523                 for (; pit != pend; ++pit) {
 524                         InsetList::iterator it = pit->insetlist.begin();
 525                         InsetList::iterator end = pit->insetlist.end();
 526                         for (; it != end; ++it) {
 527                                 if (it->inset == inset) {
 528                                         text->setCursorIntern(pit, it->pos);
 529                                         theLockingInset(inset);
 530                                         return true;
 531                                 }
 532                                 if (it->inset->getInsetFromID(id)) {
 533                                         text->setCursorIntern(pit, it->pos);
 534                                         FuncRequest cmd(this, LFUN_INSET_EDIT, "left");
 535                                         it->inset->localDispatch(cmd);
 536                                         return theLockingInset()->lockInsetInInset(this, inset);
 537                                 }
 538                         }
 539                 }
 540                 return false;
 541         }
 542         return theLockingInset()->lockInsetInInset(this, inset);
 543 }
 544
 545
 546 bool BufferView::fitLockedInsetCursor(int x, int y, int asc, int desc)
 547 {
 548         if (theLockingInset() && available()) {
 549                 y += text->cursor.iy() + theLockingInset()->insetInInsetY();
 550                 if (screen().fitManualCursor(this, text, x, y, asc, desc)) {
 551                         updateScrollbar();
 552                         return true;
 553                 }
 554         }
 555         return false;
 556 }
 557
 558
 559 void BufferView::hideCursor()
 560 {
 561         screen().hideCursor();
 562 }
 563
 564
 565 int BufferView::unlockInset(UpdatableInset * inset)
 566 {
 567         if (!inset)
 568                 return 0;
 569         if (inset && theLockingInset() == inset) {
 570                 inset->insetUnlock(this);
 571                 theLockingInset(0);
 572                 // make sure we update the combo !
 573                 owner()->setLayout(getLyXText()->cursor.par()->layout()->name());
 574                 // Tell the paragraph dialog that we changed paragraph
 575                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 576                 finishUndo();
 577                 return 0;
 578         } else if (inset && theLockingInset() &&
 579                    theLockingInset()->unlockInsetInInset(this, inset)) {
 580                 // Tell the paragraph dialog that we changed paragraph
 581                 dispatch(FuncRequest(LFUN_PARAGRAPH_UPDATE));
 582                 // owner inset has updated the layout combo
 583                 finishUndo();
 584                 return 0;
 585         }
 586         return 1;
 587 }
 588
 589
 590 void BufferView::updateInset(InsetOld * inset)
 591 {
 592         pimpl_->updateInset(inset);
 593 }
 594
 595
 596 bool BufferView::ChangeInsets(InsetOld::Code code,
 597                               string const & from, string const & to)
 598 {
 599         bool need_update = false;
 600         LyXCursor cursor = text->cursor;
 601         LyXCursor tmpcursor = cursor;
 602         cursor.par(tmpcursor.par());
 603         cursor.pos(tmpcursor.pos());
 604
 605         ParIterator end = buffer()->par_iterator_end();
 606         for (ParIterator it = buffer()->par_iterator_begin();
 607              it != end; ++it) {
 608                 bool changed_inset = false;
 609                 for (InsetList::iterator it2 = it->insetlist.begin();
 610                      it2 != it->insetlist.end(); ++it2) {
 611                         if (it2->inset->lyxCode() == code) {
 612                                 InsetCommand * inset = static_cast<InsetCommand *>(it2->inset);
 613                                 if (inset->getContents() == from) {
 614                                         inset->setContents(to);
 615                                         changed_inset = true;
 616                                 }
 617                         }
 618                 }
 619                 if (changed_inset) {
 620                         need_update = true;
 621
 622                         // FIXME
 623
 624                         // The test it.size()==1 was needed to prevent crashes.
 625                         // How to set the cursor corretly when it.size()>1 ??
 626                         if (it.size() == 1) {
 627                                 text->setCursorIntern(it.pit(), 0);
 628                                 text->redoParagraph(text->cursor.par());
 629                                 text->partialRebreak();
 630                         }
 631                 }
 632         }
 633         text->setCursorIntern(cursor.par(), cursor.pos());
 634         return need_update;
 635 }
 636
 637
 638 bool BufferView::ChangeRefsIfUnique(string const & from, string const & to)
 639 {
 640         // Check if the label 'from' appears more than once
 641         vector<string> labels;
 642         buffer()->getLabelList(labels);
 643
 644         if (lyx::count(labels.begin(), labels.end(), from) > 1)
 645                 return false;
 646
 647         return ChangeInsets(InsetOld::REF_CODE, from, to);
 648 }
 649
 650
 651 UpdatableInset * BufferView::theLockingInset() const
 652 {
 653         // If NULL is not allowed we should put an Assert here. (Lgb)
 654         if (text)
 655                 return text->the_locking_inset;
 656         return 0;
 657 }
 658
 659
 660 void BufferView::theLockingInset(UpdatableInset * inset)
 661 {
 662         text->the_locking_inset = inset;
 663 }
 664
 665
 666 LyXText * BufferView::getLyXText() const
 667 {
 668         if (theLockingInset()) {
 669                 LyXText * txt = theLockingInset()->getLyXText(this, true);
 670                 if (txt)
 671                         return txt;
 672         }
 673         return text;
 674 }
 675
 676
 677 LyXText * BufferView::getParentText(InsetOld * inset) const
 678 {
 679         if (inset->owner()) {
 680                 LyXText * txt = inset->getLyXText(this);
 681                 inset = inset->owner();
 682                 while (inset && inset->getLyXText(this) == txt)
 683                         inset = inset->owner();
 684                 if (inset)
 685                         return inset->getLyXText(this);
 686         }
 687         return text;
 688 }
 689
 690
 691 Language const * BufferView::getParentLanguage(InsetOld * inset) const
 692 {
 693         LyXText * text = getParentText(inset);
 694         return text->cursor.par()->getFontSettings(buffer()->params,
 695                                                    text->cursor.pos()).language();
 696 }
 697
 698
 699 Encoding const * BufferView::getEncoding() const
 700 {
 701         LyXText * t = getLyXText();
 702         if (!t)
 703                 return 0;
 704
 705         LyXCursor const & c = t->cursor;
 706         LyXFont const font = c.par()->getFont(buffer()->params, c.pos(),
 707                                               outerFont(c.par(), t->ownerParagraphs()));
 708         return font.language()->encoding();
 709 }
 710
 711
 712 void BufferView::haveSelection(bool sel)
 713 {
 714         pimpl_->workarea().haveSelection(sel);
 715 }
 716
 717
 718 int BufferView::workHeight() const
 719 {
 720         return pimpl_->workarea().workHeight();
 721 }