3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Asger Alstrup
7 * \author Lars Gullik Bjønnes
8 * \author Dov Feldstern
9 * \author Jean-Marc Lasgouttes
11 * \author André Pönitz
12 * \author Stefan Schimanski
14 * \author Jürgen Vigna
16 * Full author contact details are available in file CREDITS.
25 #include "buffer_funcs.h"
26 #include "BufferParams.h"
27 #include "BufferView.h"
29 #include "CompletionList.h"
31 #include "CutAndPaste.h"
32 #include "DispatchResult.h"
34 #include "ErrorList.h"
35 #include "FuncRequest.h"
37 #include "InsetList.h"
44 #include "Paragraph.h"
45 #include "ParagraphParameters.h"
46 #include "ParIterator.h"
47 #include "TextClass.h"
48 #include "TextMetrics.h"
49 #include "WordLangTuple.h"
52 #include "insets/InsetText.h"
53 #include "insets/InsetBibitem.h"
54 #include "insets/InsetCaption.h"
55 #include "insets/InsetNewline.h"
56 #include "insets/InsetNewpage.h"
57 #include "insets/InsetArgument.h"
58 #include "insets/InsetIPAMacro.h"
59 #include "insets/InsetSpace.h"
60 #include "insets/InsetSpecialChar.h"
61 #include "insets/InsetTabular.h"
63 #include "support/convert.h"
64 #include "support/debug.h"
65 #include "support/docstream.h"
66 #include "support/gettext.h"
67 #include "support/lassert.h"
68 #include "support/lstrings.h"
69 #include "support/lyxalgo.h"
70 #include "support/textutils.h"
75 // TODO: replace if in Text::readParToken() with compile time switch
78 #include "support/metahash.h"
80 typedef boost::mpl::string<'\\end','_lay','out'> end_layout;
81 typedef boost::mpl::string<'\\end','in','set'> end_inset;
85 std::string token = "\\end_layout";
87 switch (boost::hash_value(token)) {
88 case lyx::support::hash_string<end_layout>::value:
90 case lyx::support::hash_string<end_inset>::value:
100 using namespace lyx::support;
104 using cap::cutSelection;
105 using cap::pasteParagraphList;
107 static bool moveItem(Paragraph & fromPar, pos_type fromPos,
108 Paragraph & toPar, pos_type toPos, BufferParams const & params)
110 // Note: moveItem() does not honour change tracking!
111 // Therefore, it should only be used for breaking and merging paragraphs
113 // We need a copy here because the character at fromPos is going to be erased.
114 Font const tmpFont = fromPar.getFontSettings(params, fromPos);
115 Change const tmpChange = fromPar.lookupChange(fromPos);
117 if (Inset * tmpInset = fromPar.getInset(fromPos)) {
118 fromPar.releaseInset(fromPos);
119 // The inset is not in fromPar any more.
120 if (!toPar.insertInset(toPos, tmpInset, tmpFont, tmpChange)) {
127 char_type const tmpChar = fromPar.getChar(fromPos);
128 fromPar.eraseChar(fromPos, false);
129 toPar.insertChar(toPos, tmpChar, tmpFont, tmpChange);
134 void breakParagraphConservative(BufferParams const & bparams,
135 ParagraphList & pars, pit_type par_offset, pos_type pos)
137 // create a new paragraph
138 Paragraph & tmp = *pars.insert(next(pars.begin(), par_offset + 1),
140 Paragraph & par = pars[par_offset];
142 tmp.setInsetOwner(&par.inInset());
143 tmp.makeSameLayout(par);
145 LASSERT(pos <= par.size(), return);
147 if (pos < par.size()) {
148 // move everything behind the break position to the new paragraph
149 pos_type pos_end = par.size() - 1;
151 for (pos_type i = pos, j = 0; i <= pos_end; ++i) {
152 if (moveItem(par, pos, tmp, j, bparams)) {
156 // Move over the end-of-par change information
157 tmp.setChange(tmp.size(), par.lookupChange(par.size()));
158 par.setChange(par.size(), Change(bparams.track_changes ?
159 Change::INSERTED : Change::UNCHANGED));
164 void mergeParagraph(BufferParams const & bparams,
165 ParagraphList & pars, pit_type par_offset)
167 Paragraph & next = pars[par_offset + 1];
168 Paragraph & par = pars[par_offset];
170 pos_type pos_end = next.size() - 1;
171 pos_type pos_insert = par.size();
173 // the imaginary end-of-paragraph character (at par.size()) has to be
174 // marked as unmodified. Otherwise, its change is adopted by the first
175 // character of the next paragraph.
176 if (par.isChanged(par.size())) {
177 LYXERR(Debug::CHANGES,
178 "merging par with inserted/deleted end-of-par character");
179 par.setChange(par.size(), Change(Change::UNCHANGED));
182 Change change = next.lookupChange(next.size());
184 // move the content of the second paragraph to the end of the first one
185 for (pos_type i = 0, j = pos_insert; i <= pos_end; ++i) {
186 if (moveItem(next, 0, par, j, bparams)) {
191 // move the change of the end-of-paragraph character
192 par.setChange(par.size(), change);
194 pars.erase(lyx::next(pars.begin(), par_offset + 1));
198 Text::Text(InsetText * owner, bool use_default_layout)
201 pars_.push_back(Paragraph());
202 Paragraph & par = pars_.back();
203 par.setInsetOwner(owner);
204 DocumentClass const & dc = owner->buffer().params().documentClass();
205 if (use_default_layout)
206 par.setDefaultLayout(dc);
208 par.setPlainLayout(dc);
212 Text::Text(InsetText * owner, Text const & text)
216 ParagraphList::iterator const end = pars_.end();
217 ParagraphList::iterator it = pars_.begin();
218 for (; it != end; ++it)
219 it->setInsetOwner(owner);
223 pit_type Text::depthHook(pit_type pit, depth_type depth) const
225 pit_type newpit = pit;
230 while (newpit != 0 && pars_[newpit].getDepth() > depth)
233 if (pars_[newpit].getDepth() > depth)
240 pit_type Text::outerHook(pit_type par_offset) const
242 Paragraph const & par = pars_[par_offset];
244 if (par.getDepth() == 0)
246 return depthHook(par_offset, depth_type(par.getDepth() - 1));
250 bool Text::isFirstInSequence(pit_type par_offset) const
252 Paragraph const & par = pars_[par_offset];
254 pit_type dhook_offset = depthHook(par_offset, par.getDepth());
256 if (dhook_offset == par_offset)
259 Paragraph const & dhook = pars_[dhook_offset];
261 return dhook.layout() != par.layout()
262 || dhook.getDepth() != par.getDepth();
266 int Text::getTocLevel(pit_type par_offset) const
268 Paragraph const & par = pars_[par_offset];
270 if (par.layout().isEnvironment() && !isFirstInSequence(par_offset))
271 return Layout::NOT_IN_TOC;
273 return par.layout().toclevel;
277 Font const Text::outerFont(pit_type par_offset) const
279 depth_type par_depth = pars_[par_offset].getDepth();
280 FontInfo tmpfont = inherit_font;
281 depth_type prev_par_depth = 0;
282 // Resolve against environment font information
283 while (par_offset != pit_type(pars_.size())
284 && par_depth != prev_par_depth
286 && !tmpfont.resolved()) {
287 prev_par_depth = par_depth;
288 par_offset = outerHook(par_offset);
289 if (par_offset != pit_type(pars_.size())) {
290 tmpfont.realize(pars_[par_offset].layout().font);
291 par_depth = pars_[par_offset].getDepth();
295 return Font(tmpfont);
299 static void acceptOrRejectChanges(ParagraphList & pars,
300 BufferParams const & bparams, Text::ChangeOp op)
302 pit_type pars_size = static_cast<pit_type>(pars.size());
304 // first, accept or reject changes within each individual
305 // paragraph (do not consider end-of-par)
306 for (pit_type pit = 0; pit < pars_size; ++pit) {
307 // prevent assertion failure
308 if (!pars[pit].empty()) {
309 if (op == Text::ACCEPT)
310 pars[pit].acceptChanges(0, pars[pit].size());
312 pars[pit].rejectChanges(0, pars[pit].size());
316 // next, accept or reject imaginary end-of-par characters
317 for (pit_type pit = 0; pit < pars_size; ++pit) {
318 pos_type pos = pars[pit].size();
319 if (pars[pit].isChanged(pos)) {
320 // keep the end-of-par char if it is inserted and accepted
321 // or when it is deleted and rejected.
322 if (pars[pit].isInserted(pos) == (op == Text::ACCEPT)) {
323 pars[pit].setChange(pos, Change(Change::UNCHANGED));
325 if (pit == pars_size - 1) {
326 // we cannot remove a par break at the end of the last
327 // paragraph; instead, we mark it unchanged
328 pars[pit].setChange(pos, Change(Change::UNCHANGED));
330 mergeParagraph(bparams, pars, pit);
340 void acceptChanges(ParagraphList & pars, BufferParams const & bparams)
342 acceptOrRejectChanges(pars, bparams, Text::ACCEPT);
346 void rejectChanges(ParagraphList & pars, BufferParams const & bparams)
348 acceptOrRejectChanges(pars, bparams, Text::REJECT);
352 InsetText const & Text::inset() const
359 void Text::readParToken(Paragraph & par, Lexer & lex,
360 string const & token, Font & font, Change & change, ErrorList & errorList)
362 Buffer * buf = const_cast<Buffer *>(&owner_->buffer());
363 BufferParams const & bp = buf->params();
365 if (token[0] != '\\') {
366 docstring dstr = lex.getDocString();
367 par.appendString(dstr, font, change);
369 } else if (token == "\\begin_layout") {
371 docstring layoutname = lex.getDocString();
373 font = Font(inherit_font, bp.language);
374 change = Change(Change::UNCHANGED);
376 DocumentClass const & tclass = bp.documentClass();
378 if (layoutname.empty())
379 layoutname = tclass.defaultLayoutName();
381 if (owner_->forcePlainLayout()) {
382 // in this case only the empty layout is allowed
383 layoutname = tclass.plainLayoutName();
384 } else if (par.usePlainLayout()) {
385 // in this case, default layout maps to empty layout
386 if (layoutname == tclass.defaultLayoutName())
387 layoutname = tclass.plainLayoutName();
389 // otherwise, the empty layout maps to the default
390 if (layoutname == tclass.plainLayoutName())
391 layoutname = tclass.defaultLayoutName();
394 // When we apply an unknown layout to a document, we add this layout to the textclass
395 // of this document. For example, when you apply class article to a beamer document,
396 // all unknown layouts such as frame will be added to document class article so that
397 // these layouts can keep their original names.
398 bool const added_one = tclass.addLayoutIfNeeded(layoutname);
401 docstring const s = bformat(_("Layout `%1$s' was not found."), layoutname);
403 ErrorItem(_("Layout Not Found"), s, par.id(), 0, par.size()));
406 par.setLayout(bp.documentClass()[layoutname]);
408 // Test whether the layout is obsolete.
409 Layout const & layout = par.layout();
410 if (!layout.obsoleted_by().empty())
411 par.setLayout(bp.documentClass()[layout.obsoleted_by()]);
413 par.params().read(lex);
415 } else if (token == "\\end_layout") {
416 LYXERR0("Solitary \\end_layout in line " << lex.lineNumber() << "\n"
417 << "Missing \\begin_layout ?");
418 } else if (token == "\\end_inset") {
419 LYXERR0("Solitary \\end_inset in line " << lex.lineNumber() << "\n"
420 << "Missing \\begin_inset ?");
421 } else if (token == "\\begin_inset") {
422 Inset * inset = readInset(lex, buf);
424 par.insertInset(par.size(), inset, font, change);
427 docstring line = lex.getDocString();
428 errorList.push_back(ErrorItem(_("Unknown Inset"), line,
429 par.id(), 0, par.size()));
431 } else if (token == "\\family") {
433 setLyXFamily(lex.getString(), font.fontInfo());
434 } else if (token == "\\series") {
436 setLyXSeries(lex.getString(), font.fontInfo());
437 } else if (token == "\\shape") {
439 setLyXShape(lex.getString(), font.fontInfo());
440 } else if (token == "\\size") {
442 setLyXSize(lex.getString(), font.fontInfo());
443 } else if (token == "\\lang") {
445 string const tok = lex.getString();
446 Language const * lang = languages.getLanguage(tok);
448 font.setLanguage(lang);
450 font.setLanguage(bp.language);
451 lex.printError("Unknown language `$$Token'");
453 } else if (token == "\\numeric") {
455 font.fontInfo().setNumber(setLyXMisc(lex.getString()));
456 } else if (token == "\\emph") {
458 font.fontInfo().setEmph(setLyXMisc(lex.getString()));
459 } else if (token == "\\bar") {
461 string const tok = lex.getString();
464 font.fontInfo().setUnderbar(FONT_ON);
465 else if (tok == "no")
466 font.fontInfo().setUnderbar(FONT_OFF);
467 else if (tok == "default")
468 font.fontInfo().setUnderbar(FONT_INHERIT);
470 lex.printError("Unknown bar font flag "
472 } else if (token == "\\strikeout") {
474 font.fontInfo().setStrikeout(setLyXMisc(lex.getString()));
475 } else if (token == "\\uuline") {
477 font.fontInfo().setUuline(setLyXMisc(lex.getString()));
478 } else if (token == "\\uwave") {
480 font.fontInfo().setUwave(setLyXMisc(lex.getString()));
481 } else if (token == "\\noun") {
483 font.fontInfo().setNoun(setLyXMisc(lex.getString()));
484 } else if (token == "\\color") {
486 setLyXColor(lex.getString(), font.fontInfo());
487 } else if (token == "\\SpecialChar" ||
488 (token == "\\SpecialCharNoPassThru" &&
489 !par.layout().pass_thru && !inset().isPassThru())) {
490 auto_ptr<Inset> inset;
491 inset.reset(new InsetSpecialChar);
493 inset->setBuffer(*buf);
494 par.insertInset(par.size(), inset.release(), font, change);
495 } else if (token == "\\SpecialCharNoPassThru") {
497 docstring const s = ltrim(lex.getDocString(), "\\");
498 par.insert(par.size(), s, font, change);
499 } else if (token == "\\IPAChar") {
500 auto_ptr<Inset> inset;
501 inset.reset(new InsetIPAChar);
503 inset->setBuffer(*buf);
504 par.insertInset(par.size(), inset.release(), font, change);
505 } else if (token == "\\twohyphens" || token == "\\threehyphens") {
506 // Ideally, this should be done by lyx2lyx, but lyx2lyx does not know the
507 // running font and does not know anything about layouts (and CopyStyle).
508 Layout const & layout(par.layout());
509 FontInfo info = font.fontInfo();
510 info.realize(layout.resfont);
511 if (layout.pass_thru || inset().isPassThru() ||
512 info.family() == TYPEWRITER_FAMILY) {
513 if (token == "\\twohyphens")
514 par.insert(par.size(), from_ascii("--"), font, change);
516 par.insert(par.size(), from_ascii("---"), font, change);
518 if (token == "\\twohyphens")
519 par.insertChar(par.size(), 0x2013, font, change);
521 par.insertChar(par.size(), 0x2014, font, change);
523 } else if (token == "\\backslash") {
524 par.appendChar('\\', font, change);
525 } else if (token == "\\LyXTable") {
526 auto_ptr<Inset> inset(new InsetTabular(buf));
528 par.insertInset(par.size(), inset.release(), font, change);
529 } else if (token == "\\change_unchanged") {
530 change = Change(Change::UNCHANGED);
531 } else if (token == "\\change_inserted" || token == "\\change_deleted") {
533 istringstream is(lex.getString());
537 BufferParams::AuthorMap const & am = bp.author_map;
538 if (am.find(aid) == am.end()) {
539 errorList.push_back(ErrorItem(_("Change tracking error"),
540 bformat(_("Unknown author index for change: %1$d\n"), aid),
541 par.id(), 0, par.size()));
542 change = Change(Change::UNCHANGED);
544 if (token == "\\change_inserted")
545 change = Change(Change::INSERTED, am.find(aid)->second, ct);
547 change = Change(Change::DELETED, am.find(aid)->second, ct);
551 errorList.push_back(ErrorItem(_("Unknown token"),
552 bformat(_("Unknown token: %1$s %2$s\n"), from_utf8(token),
554 par.id(), 0, par.size()));
559 void Text::readParagraph(Paragraph & par, Lexer & lex,
560 ErrorList & errorList)
563 string token = lex.getString();
565 Change change(Change::UNCHANGED);
568 readParToken(par, lex, token, font, change, errorList);
571 token = lex.getString();
576 if (token == "\\end_layout") {
577 //Ok, paragraph finished
581 LYXERR(Debug::PARSER, "Handling paragraph token: `" << token << '\'');
582 if (token == "\\begin_layout" || token == "\\end_document"
583 || token == "\\end_inset" || token == "\\begin_deeper"
584 || token == "\\end_deeper") {
585 lex.pushToken(token);
586 lyxerr << "Paragraph ended in line "
587 << lex.lineNumber() << "\n"
588 << "Missing \\end_layout.\n";
592 // Final change goes to paragraph break:
593 par.setChange(par.size(), change);
595 // Initialize begin_of_body_ on load; redoParagraph maintains
596 par.setBeginOfBody();
598 // mark paragraph for spell checking on load
599 // par.requestSpellCheck();
603 class TextCompletionList : public CompletionList
607 TextCompletionList(Cursor const & cur, WordList const * list)
608 : buffer_(cur.buffer()), list_(list)
611 virtual ~TextCompletionList() {}
614 virtual bool sorted() const { return true; }
616 virtual size_t size() const
618 return list_->size();
621 virtual docstring const & data(size_t idx) const
623 return list_->word(idx);
628 Buffer const * buffer_;
630 WordList const * list_;
634 bool Text::empty() const
636 return pars_.empty() || (pars_.size() == 1 && pars_[0].empty()
637 // FIXME: Should we consider the labeled type as empty too?
638 && pars_[0].layout().labeltype == LABEL_NO_LABEL);
642 double Text::spacing(Paragraph const & par) const
644 if (par.params().spacing().isDefault())
645 return owner_->buffer().params().spacing().getValue();
646 return par.params().spacing().getValue();
651 * This breaks a paragraph at the specified position.
652 * The new paragraph will:
653 * - Decrease depth by one (or change layout to default layout) when
654 * keep_layout == false
655 * - keep current depth and layout when keep_layout == true
657 static void breakParagraph(Text & text, pit_type par_offset, pos_type pos,
660 BufferParams const & bparams = text.inset().buffer().params();
661 ParagraphList & pars = text.paragraphs();
662 // create a new paragraph, and insert into the list
663 ParagraphList::iterator tmp =
664 pars.insert(next(pars.begin(), par_offset + 1),
667 Paragraph & par = pars[par_offset];
669 // remember to set the inset_owner
670 tmp->setInsetOwner(&par.inInset());
671 // without doing that we get a crash when typing <Return> at the
672 // end of a paragraph
673 tmp->setPlainOrDefaultLayout(bparams.documentClass());
676 tmp->setLayout(par.layout());
677 tmp->setLabelWidthString(par.params().labelWidthString());
678 tmp->params().depth(par.params().depth());
679 } else if (par.params().depth() > 0) {
680 Paragraph const & hook = pars[text.outerHook(par_offset)];
681 tmp->setLayout(hook.layout());
682 // not sure the line below is useful
683 tmp->setLabelWidthString(par.params().labelWidthString());
684 tmp->params().depth(hook.params().depth());
687 bool const isempty = (par.allowEmpty() && par.empty());
689 if (!isempty && (par.size() > pos || par.empty())) {
690 tmp->setLayout(par.layout());
691 tmp->params().align(par.params().align());
692 tmp->setLabelWidthString(par.params().labelWidthString());
694 tmp->params().depth(par.params().depth());
695 tmp->params().noindent(par.params().noindent());
697 // move everything behind the break position
698 // to the new paragraph
700 /* Note: if !keepempty, empty() == true, then we reach
701 * here with size() == 0. So pos_end becomes - 1. This
702 * doesn't cause problems because both loops below
703 * enforce pos <= pos_end and 0 <= pos
705 pos_type pos_end = par.size() - 1;
707 for (pos_type i = pos, j = 0; i <= pos_end; ++i) {
708 if (moveItem(par, pos, *tmp, j, bparams)) {
714 // Move over the end-of-par change information
715 tmp->setChange(tmp->size(), par.lookupChange(par.size()));
716 par.setChange(par.size(), Change(bparams.track_changes ?
717 Change::INSERTED : Change::UNCHANGED));
720 // Make sure that we keep the language when
721 // breaking paragraph.
723 Font changed = tmp->getFirstFontSettings(bparams);
724 Font const & old = par.getFontSettings(bparams, par.size());
725 changed.setLanguage(old.language());
726 tmp->setFont(0, changed);
733 bool const soa = par.params().startOfAppendix();
734 par.params().clear();
735 // do not lose start of appendix marker (bug 4212)
736 par.params().startOfAppendix(soa);
737 par.setPlainOrDefaultLayout(bparams.documentClass());
741 par.setLayout(tmp->layout());
742 par.setLabelWidthString(tmp->params().labelWidthString());
743 par.params().depth(tmp->params().depth());
748 void Text::breakParagraph(Cursor & cur, bool inverse_logic)
750 LBUFERR(this == cur.text());
752 Paragraph & cpar = cur.paragraph();
753 pit_type cpit = cur.pit();
755 DocumentClass const & tclass = cur.buffer()->params().documentClass();
756 Layout const & layout = cpar.layout();
758 if (cur.lastpos() == 0 && !cpar.allowEmpty()) {
759 if (changeDepthAllowed(cur, DEC_DEPTH))
760 changeDepth(cur, DEC_DEPTH);
762 docstring const & lay = cur.paragraph().usePlainLayout()
763 ? tclass.plainLayoutName() : tclass.defaultLayoutName();
771 // Always break behind a space
772 // It is better to erase the space (Dekel)
773 if (cur.pos() != cur.lastpos() && cpar.isLineSeparator(cur.pos()))
774 cpar.eraseChar(cur.pos(), cur.buffer()->params().track_changes);
776 // What should the layout for the new paragraph be?
777 bool keep_layout = layout.isEnvironment()
778 || (layout.isParagraph() && layout.parbreak_is_newline);
780 keep_layout = !keep_layout;
782 // We need to remember this before we break the paragraph, because
783 // that invalidates the layout variable
784 bool sensitive = layout.labeltype == LABEL_SENSITIVE;
786 // we need to set this before we insert the paragraph.
787 bool const isempty = cpar.allowEmpty() && cpar.empty();
789 lyx::breakParagraph(*this, cpit, cur.pos(), keep_layout);
791 // After this, neither paragraph contains any rows!
794 pit_type next_par = cpit + 1;
796 // well this is the caption hack since one caption is really enough
799 // set to standard-layout
800 //FIXME Check if this should be plainLayout() in some cases
801 pars_[cpit].applyLayout(tclass.defaultLayout());
803 // set to standard-layout
804 //FIXME Check if this should be plainLayout() in some cases
805 pars_[next_par].applyLayout(tclass.defaultLayout());
808 while (!pars_[next_par].empty() && pars_[next_par].isNewline(0)) {
809 if (!pars_[next_par].eraseChar(0, cur.buffer()->params().track_changes))
810 break; // the character couldn't be deleted physically due to change tracking
813 // A singlePar update is not enough in this case.
814 cur.screenUpdateFlags(Update::Force);
815 cur.forceBufferUpdate();
817 // This check is necessary. Otherwise the new empty paragraph will
818 // be deleted automatically. And it is more friendly for the user!
819 if (cur.pos() != 0 || isempty)
820 setCursor(cur, cur.pit() + 1, 0);
822 setCursor(cur, cur.pit(), 0);
826 // needed to insert the selection
827 void Text::insertStringAsLines(Cursor & cur, docstring const & str,
830 BufferParams const & bparams = owner_->buffer().params();
831 pit_type pit = cur.pit();
832 pos_type pos = cur.pos();
834 // insert the string, don't insert doublespace
835 bool space_inserted = true;
836 for (docstring::const_iterator cit = str.begin();
837 cit != str.end(); ++cit) {
838 Paragraph & par = pars_[pit];
840 if (inset().allowMultiPar() && (!par.empty() || par.allowEmpty())) {
841 lyx::breakParagraph(*this, pit, pos,
842 par.layout().isEnvironment());
845 space_inserted = true;
849 // do not insert consecutive spaces if !free_spacing
850 } else if ((*cit == ' ' || *cit == '\t') &&
851 space_inserted && !par.isFreeSpacing()) {
853 } else if (*cit == '\t') {
854 if (!par.isFreeSpacing()) {
855 // tabs are like spaces here
856 par.insertChar(pos, ' ', font, bparams.track_changes);
858 space_inserted = true;
860 par.insertChar(pos, *cit, font, bparams.track_changes);
862 space_inserted = true;
864 } else if (!isPrintable(*cit)) {
865 // Ignore unprintables
868 // just insert the character
869 par.insertChar(pos, *cit, font, bparams.track_changes);
871 space_inserted = (*cit == ' ');
874 setCursor(cur, pit, pos);
878 // turn double CR to single CR, others are converted into one
879 // blank. Then insertStringAsLines is called
880 void Text::insertStringAsParagraphs(Cursor & cur, docstring const & str,
883 docstring linestr = str;
884 bool newline_inserted = false;
886 for (string::size_type i = 0, siz = linestr.size(); i < siz; ++i) {
887 if (linestr[i] == '\n') {
888 if (newline_inserted) {
889 // we know that \r will be ignored by
890 // insertStringAsLines. Of course, it is a dirty
891 // trick, but it works...
892 linestr[i - 1] = '\r';
896 newline_inserted = true;
898 } else if (isPrintable(linestr[i])) {
899 newline_inserted = false;
902 insertStringAsLines(cur, linestr, font);
906 // insert a character, moves all the following breaks in the
907 // same Paragraph one to the right and make a rebreak
908 void Text::insertChar(Cursor & cur, char_type c)
910 LBUFERR(this == cur.text());
912 cur.recordUndo(INSERT_UNDO);
914 TextMetrics const & tm = cur.bv().textMetrics(this);
915 Buffer const & buffer = *cur.buffer();
916 Paragraph & par = cur.paragraph();
917 // try to remove this
918 pit_type const pit = cur.pit();
920 bool const freeSpacing = par.layout().free_spacing ||
923 if (lyxrc.auto_number) {
924 static docstring const number_operators = from_ascii("+-/*");
925 static docstring const number_unary_operators = from_ascii("+-");
926 static docstring const number_seperators = from_ascii(".,:");
928 if (cur.current_font.fontInfo().number() == FONT_ON) {
929 if (!isDigitASCII(c) && !contains(number_operators, c) &&
930 !(contains(number_seperators, c) &&
932 cur.pos() != cur.lastpos() &&
933 tm.displayFont(pit, cur.pos()).fontInfo().number() == FONT_ON &&
934 tm.displayFont(pit, cur.pos() - 1).fontInfo().number() == FONT_ON)
936 number(cur); // Set current_font.number to OFF
937 } else if (isDigitASCII(c) &&
938 cur.real_current_font.isVisibleRightToLeft()) {
939 number(cur); // Set current_font.number to ON
941 if (cur.pos() != 0) {
942 char_type const c = par.getChar(cur.pos() - 1);
943 if (contains(number_unary_operators, c) &&
945 || par.isSeparator(cur.pos() - 2)
946 || par.isEnvSeparator(cur.pos() - 2)
947 || par.isNewline(cur.pos() - 2))
949 setCharFont(pit, cur.pos() - 1, cur.current_font,
951 } else if (contains(number_seperators, c)
953 && tm.displayFont(pit, cur.pos() - 2).fontInfo().number() == FONT_ON) {
954 setCharFont(pit, cur.pos() - 1, cur.current_font,
961 // In Bidi text, we want spaces to be treated in a special way: spaces
962 // which are between words in different languages should get the
963 // paragraph's language; otherwise, spaces should keep the language
964 // they were originally typed in. This is only in effect while typing;
965 // after the text is already typed in, the user can always go back and
966 // explicitly set the language of a space as desired. But 99.9% of the
967 // time, what we're doing here is what the user actually meant.
969 // The following cases are the ones in which the language of the space
970 // should be changed to match that of the containing paragraph. In the
971 // depictions, lowercase is LTR, uppercase is RTL, underscore (_)
972 // represents a space, pipe (|) represents the cursor position (so the
973 // character before it is the one just typed in). The different cases
974 // are depicted logically (not visually), from left to right:
979 // Theoretically, there are other situations that we should, perhaps, deal
980 // with (e.g.: a|_A, A|_a). In practice, though, there really isn't any
981 // point (to understand why, just try to create this situation...).
983 if ((cur.pos() >= 2) && (par.isLineSeparator(cur.pos() - 1))) {
984 // get font in front and behind the space in question. But do NOT
985 // use getFont(cur.pos()) because the character c is not inserted yet
986 Font const pre_space_font = tm.displayFont(cur.pit(), cur.pos() - 2);
987 Font const & post_space_font = cur.real_current_font;
988 bool pre_space_rtl = pre_space_font.isVisibleRightToLeft();
989 bool post_space_rtl = post_space_font.isVisibleRightToLeft();
991 if (pre_space_rtl != post_space_rtl) {
992 // Set the space's language to match the language of the
993 // adjacent character whose direction is the paragraph's
994 // direction; don't touch other properties of the font
995 Language const * lang =
996 (pre_space_rtl == par.isRTL(buffer.params())) ?
997 pre_space_font.language() : post_space_font.language();
999 Font space_font = tm.displayFont(cur.pit(), cur.pos() - 1);
1000 space_font.setLanguage(lang);
1001 par.setFont(cur.pos() - 1, space_font);
1005 // Next check, if there will be two blanks together or a blank at
1006 // the beginning of a paragraph.
1007 // I decided to handle blanks like normal characters, the main
1008 // difference are the special checks when calculating the row.fill
1009 // (blank does not count at the end of a row) and the check here
1011 // When the free-spacing option is set for the current layout,
1012 // disable the double-space checking
1013 if (!freeSpacing && isLineSeparatorChar(c)) {
1014 if (cur.pos() == 0) {
1016 "You cannot insert a space at the "
1017 "beginning of a paragraph. Please read the Tutorial."));
1020 // LASSERT: Is it safe to continue here?
1021 LASSERT(cur.pos() > 0, /**/);
1022 if ((par.isLineSeparator(cur.pos() - 1) || par.isNewline(cur.pos() - 1))
1023 && !par.isDeleted(cur.pos() - 1)) {
1025 "You cannot type two spaces this way. "
1026 "Please read the Tutorial."));
1031 // Prevent to insert uncodable characters in verbatim and ERT
1032 // (workaround for bug 9012)
1033 // Don't do it for listings inset, since InsetListings::latex() tries
1034 // to switch to a usable encoding which works in many cases (bug 9102).
1035 if (cur.paragraph().isPassThru() && owner_->lyxCode() != LISTINGS_CODE &&
1036 cur.current_font.language()) {
1037 Encoding const * e = cur.current_font.language()->encoding();
1038 if (!e->encodable(c)) {
1039 cur.message(_("Character is uncodable in verbatim paragraphs."));
1044 pos_type pos = cur.pos();
1045 if (!cur.paragraph().isPassThru() && owner_->lyxCode() != IPA_CODE &&
1046 cur.current_font.fontInfo().family() != TYPEWRITER_FAMILY &&
1047 c == '-' && pos > 0) {
1048 if (par.getChar(pos - 1) == '-') {
1049 // convert "--" to endash
1050 par.eraseChar(pos - 1, cur.buffer()->params().track_changes);
1053 } else if (par.getChar(pos - 1) == 0x2013) {
1054 // convert "---" to emdash
1055 par.eraseChar(pos - 1, cur.buffer()->params().track_changes);
1058 } else if (par.getChar(pos - 1) == 0x2014) {
1059 // convert "----" to "-"
1060 par.eraseChar(pos - 1, cur.buffer()->params().track_changes);
1066 par.insertChar(pos, c, cur.current_font,
1067 cur.buffer()->params().track_changes);
1068 cur.checkBufferStructure();
1070 // cur.screenUpdateFlags(Update::Force);
1071 bool boundary = cur.boundary()
1072 || tm.isRTLBoundary(cur.pit(), pos + 1);
1073 setCursor(cur, cur.pit(), pos + 1, false, boundary);
1078 void Text::charInserted(Cursor & cur)
1080 Paragraph & par = cur.paragraph();
1082 // register word if a non-letter was entered
1084 && !par.isWordSeparator(cur.pos() - 2)
1085 && par.isWordSeparator(cur.pos() - 1)) {
1086 // get the word in front of cursor
1087 LBUFERR(this == cur.text());
1088 cur.paragraph().updateWords();
1093 // the cursor set functions have a special mechanism. When they
1094 // realize, that you left an empty paragraph, they will delete it.
1096 bool Text::cursorForwardOneWord(Cursor & cur)
1098 LBUFERR(this == cur.text());
1100 pos_type const lastpos = cur.lastpos();
1101 pit_type pit = cur.pit();
1102 pos_type pos = cur.pos();
1103 Paragraph const & par = cur.paragraph();
1105 // Paragraph boundary is a word boundary
1106 if (pos == lastpos) {
1107 if (pit != cur.lastpit())
1108 return setCursor(cur, pit + 1, 0);
1113 if (lyxrc.mac_like_cursor_movement) {
1114 // Skip through trailing punctuation and spaces.
1115 while (pos != lastpos && (par.isChar(pos) || par.isSpace(pos)))
1118 // Skip over either a non-char inset or a full word
1119 if (pos != lastpos && par.isWordSeparator(pos))
1121 else while (pos != lastpos && !par.isWordSeparator(pos))
1124 LASSERT(pos < lastpos, return false); // see above
1125 if (!par.isWordSeparator(pos))
1126 while (pos != lastpos && !par.isWordSeparator(pos))
1128 else if (par.isChar(pos))
1129 while (pos != lastpos && par.isChar(pos))
1131 else if (!par.isSpace(pos)) // non-char inset
1134 // Skip over white space
1135 while (pos != lastpos && par.isSpace(pos))
1139 return setCursor(cur, pit, pos);
1143 bool Text::cursorBackwardOneWord(Cursor & cur)
1145 LBUFERR(this == cur.text());
1147 pit_type pit = cur.pit();
1148 pos_type pos = cur.pos();
1149 Paragraph & par = cur.paragraph();
1151 // Paragraph boundary is a word boundary
1152 if (pos == 0 && pit != 0)
1153 return setCursor(cur, pit - 1, getPar(pit - 1).size());
1155 if (lyxrc.mac_like_cursor_movement) {
1156 // Skip through punctuation and spaces.
1157 while (pos != 0 && (par.isChar(pos - 1) || par.isSpace(pos - 1)))
1160 // Skip over either a non-char inset or a full word
1161 if (pos != 0 && par.isWordSeparator(pos - 1) && !par.isChar(pos - 1))
1163 else while (pos != 0 && !par.isWordSeparator(pos - 1))
1166 // Skip over white space
1167 while (pos != 0 && par.isSpace(pos - 1))
1170 if (pos != 0 && !par.isWordSeparator(pos - 1))
1171 while (pos != 0 && !par.isWordSeparator(pos - 1))
1173 else if (pos != 0 && par.isChar(pos - 1))
1174 while (pos != 0 && par.isChar(pos - 1))
1176 else if (pos != 0 && !par.isSpace(pos - 1)) // non-char inset
1180 return setCursor(cur, pit, pos);
1184 bool Text::cursorVisLeftOneWord(Cursor & cur)
1186 LBUFERR(this == cur.text());
1188 pos_type left_pos, right_pos;
1189 bool left_is_letter, right_is_letter;
1191 Cursor temp_cur = cur;
1193 // always try to move at least once...
1194 while (temp_cur.posVisLeft(true /* skip_inset */)) {
1196 // collect some information about current cursor position
1197 temp_cur.getSurroundingPos(left_pos, right_pos);
1199 (left_pos > -1 ? !temp_cur.paragraph().isWordSeparator(left_pos) : false);
1201 (right_pos > -1 ? !temp_cur.paragraph().isWordSeparator(right_pos) : false);
1203 // if we're not at a letter/non-letter boundary, continue moving
1204 if (left_is_letter == right_is_letter)
1207 // we should stop when we have an LTR word on our right or an RTL word
1209 if ((left_is_letter && temp_cur.paragraph().getFontSettings(
1210 temp_cur.buffer()->params(), left_pos).isRightToLeft())
1211 || (right_is_letter && !temp_cur.paragraph().getFontSettings(
1212 temp_cur.buffer()->params(), right_pos).isRightToLeft()))
1216 return setCursor(cur, temp_cur.pit(), temp_cur.pos(),
1217 true, temp_cur.boundary());
1221 bool Text::cursorVisRightOneWord(Cursor & cur)
1223 LBUFERR(this == cur.text());
1225 pos_type left_pos, right_pos;
1226 bool left_is_letter, right_is_letter;
1228 Cursor temp_cur = cur;
1230 // always try to move at least once...
1231 while (temp_cur.posVisRight(true /* skip_inset */)) {
1233 // collect some information about current cursor position
1234 temp_cur.getSurroundingPos(left_pos, right_pos);
1236 (left_pos > -1 ? !temp_cur.paragraph().isWordSeparator(left_pos) : false);
1238 (right_pos > -1 ? !temp_cur.paragraph().isWordSeparator(right_pos) : false);
1240 // if we're not at a letter/non-letter boundary, continue moving
1241 if (left_is_letter == right_is_letter)
1244 // we should stop when we have an LTR word on our right or an RTL word
1246 if ((left_is_letter && temp_cur.paragraph().getFontSettings(
1247 temp_cur.buffer()->params(),
1248 left_pos).isRightToLeft())
1249 || (right_is_letter && !temp_cur.paragraph().getFontSettings(
1250 temp_cur.buffer()->params(),
1251 right_pos).isRightToLeft()))
1255 return setCursor(cur, temp_cur.pit(), temp_cur.pos(),
1256 true, temp_cur.boundary());
1260 void Text::selectWord(Cursor & cur, word_location loc)
1262 LBUFERR(this == cur.text());
1263 CursorSlice from = cur.top();
1264 CursorSlice to = cur.top();
1265 getWord(from, to, loc);
1266 if (cur.top() != from)
1267 setCursor(cur, from.pit(), from.pos());
1270 if (!cur.selection())
1272 setCursor(cur, to.pit(), to.pos());
1274 cur.setWordSelection(true);
1278 void Text::selectAll(Cursor & cur)
1280 LBUFERR(this == cur.text());
1281 if (cur.lastpos() == 0 && cur.lastpit() == 0)
1283 // If the cursor is at the beginning, make sure the cursor ends there
1284 if (cur.pit() == 0 && cur.pos() == 0) {
1285 setCursor(cur, cur.lastpit(), getPar(cur.lastpit()).size());
1287 setCursor(cur, 0, 0);
1289 setCursor(cur, 0, 0);
1291 setCursor(cur, cur.lastpit(), getPar(cur.lastpit()).size());
1297 // Select the word currently under the cursor when no
1298 // selection is currently set
1299 bool Text::selectWordWhenUnderCursor(Cursor & cur, word_location loc)
1301 LBUFERR(this == cur.text());
1302 if (cur.selection())
1304 selectWord(cur, loc);
1305 return cur.selection();
1309 void Text::acceptOrRejectChanges(Cursor & cur, ChangeOp op)
1311 LBUFERR(this == cur.text());
1313 if (!cur.selection()) {
1314 if (!selectChange(cur))
1318 cur.recordUndoSelection();
1320 pit_type begPit = cur.selectionBegin().pit();
1321 pit_type endPit = cur.selectionEnd().pit();
1323 pos_type begPos = cur.selectionBegin().pos();
1324 pos_type endPos = cur.selectionEnd().pos();
1326 // keep selection info, because endPos becomes invalid after the first loop
1327 bool endsBeforeEndOfPar = (endPos < pars_[endPit].size());
1329 // first, accept/reject changes within each individual paragraph (do not consider end-of-par)
1330 for (pit_type pit = begPit; pit <= endPit; ++pit) {
1331 pos_type parSize = pars_[pit].size();
1333 // ignore empty paragraphs; otherwise, an assertion will fail for
1334 // acceptChanges(bparams, 0, 0) or rejectChanges(bparams, 0, 0)
1338 // do not consider first paragraph if the cursor starts at pos size()
1339 if (pit == begPit && begPos == parSize)
1342 // do not consider last paragraph if the cursor ends at pos 0
1343 if (pit == endPit && endPos == 0)
1344 break; // last iteration anyway
1346 pos_type left = (pit == begPit ? begPos : 0);
1347 pos_type right = (pit == endPit ? endPos : parSize);
1350 // there is no change here
1354 pars_[pit].acceptChanges(left, right);
1356 pars_[pit].rejectChanges(left, right);
1360 // next, accept/reject imaginary end-of-par characters
1362 for (pit_type pit = begPit; pit <= endPit; ++pit) {
1363 pos_type pos = pars_[pit].size();
1365 // skip if the selection ends before the end-of-par
1366 if (pit == endPit && endsBeforeEndOfPar)
1367 break; // last iteration anyway
1369 // skip if this is not the last paragraph of the document
1370 // note: the user should be able to accept/reject the par break of the last par!
1371 if (pit == endPit && pit + 1 != int(pars_.size()))
1372 break; // last iteration anway
1375 if (pars_[pit].isInserted(pos)) {
1376 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
1377 } else if (pars_[pit].isDeleted(pos)) {
1378 if (pit + 1 == int(pars_.size())) {
1379 // we cannot remove a par break at the end of the last paragraph;
1380 // instead, we mark it unchanged
1381 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
1383 mergeParagraph(cur.buffer()->params(), pars_, pit);
1389 if (pars_[pit].isDeleted(pos)) {
1390 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
1391 } else if (pars_[pit].isInserted(pos)) {
1392 if (pit + 1 == int(pars_.size())) {
1393 // we mark the par break at the end of the last paragraph unchanged
1394 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
1396 mergeParagraph(cur.buffer()->params(), pars_, pit);
1404 // finally, invoke the DEPM
1405 deleteEmptyParagraphMechanism(begPit, endPit, cur.buffer()->params().track_changes);
1408 cur.clearSelection();
1409 setCursorIntern(cur, begPit, begPos);
1410 cur.screenUpdateFlags(Update::Force);
1411 cur.forceBufferUpdate();
1415 void Text::acceptChanges()
1417 BufferParams const & bparams = owner_->buffer().params();
1418 lyx::acceptChanges(pars_, bparams);
1419 deleteEmptyParagraphMechanism(0, pars_.size() - 1, bparams.track_changes);
1423 void Text::rejectChanges()
1425 BufferParams const & bparams = owner_->buffer().params();
1426 pit_type pars_size = static_cast<pit_type>(pars_.size());
1428 // first, reject changes within each individual paragraph
1429 // (do not consider end-of-par)
1430 for (pit_type pit = 0; pit < pars_size; ++pit) {
1431 if (!pars_[pit].empty()) // prevent assertion failure
1432 pars_[pit].rejectChanges(0, pars_[pit].size());
1435 // next, reject imaginary end-of-par characters
1436 for (pit_type pit = 0; pit < pars_size; ++pit) {
1437 pos_type pos = pars_[pit].size();
1439 if (pars_[pit].isDeleted(pos)) {
1440 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
1441 } else if (pars_[pit].isInserted(pos)) {
1442 if (pit == pars_size - 1) {
1443 // we mark the par break at the end of the last
1444 // paragraph unchanged
1445 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
1447 mergeParagraph(bparams, pars_, pit);
1454 // finally, invoke the DEPM
1455 deleteEmptyParagraphMechanism(0, pars_size - 1, bparams.track_changes);
1459 void Text::deleteWordForward(Cursor & cur)
1461 LBUFERR(this == cur.text());
1462 if (cur.lastpos() == 0)
1466 cur.setSelection(true);
1467 cursorForwardOneWord(cur);
1469 cutSelection(cur, true, false);
1470 cur.checkBufferStructure();
1475 void Text::deleteWordBackward(Cursor & cur)
1477 LBUFERR(this == cur.text());
1478 if (cur.lastpos() == 0)
1479 cursorBackward(cur);
1482 cur.setSelection(true);
1483 cursorBackwardOneWord(cur);
1485 cutSelection(cur, true, false);
1486 cur.checkBufferStructure();
1491 // Kill to end of line.
1492 void Text::changeCase(Cursor & cur, TextCase action)
1494 LBUFERR(this == cur.text());
1498 bool gotsel = false;
1499 if (cur.selection()) {
1500 from = cur.selBegin();
1505 getWord(from, to, PARTIAL_WORD);
1506 cursorForwardOneWord(cur);
1509 cur.recordUndoSelection();
1511 pit_type begPit = from.pit();
1512 pit_type endPit = to.pit();
1514 pos_type begPos = from.pos();
1515 pos_type endPos = to.pos();
1517 pos_type right = 0; // needed after the for loop
1519 for (pit_type pit = begPit; pit <= endPit; ++pit) {
1520 Paragraph & par = pars_[pit];
1521 pos_type const pos = (pit == begPit ? begPos : 0);
1522 right = (pit == endPit ? endPos : par.size());
1523 par.changeCase(cur.buffer()->params(), pos, right, action);
1526 // the selection may have changed due to logically-only deleted chars
1528 setCursor(cur, begPit, begPos);
1530 setCursor(cur, endPit, right);
1533 setCursor(cur, endPit, right);
1535 cur.checkBufferStructure();
1539 bool Text::handleBibitems(Cursor & cur)
1541 if (cur.paragraph().layout().labeltype != LABEL_BIBLIO)
1547 BufferParams const & bufparams = cur.buffer()->params();
1548 Paragraph const & par = cur.paragraph();
1549 Cursor prevcur = cur;
1550 if (cur.pit() > 0) {
1552 prevcur.pos() = prevcur.lastpos();
1554 Paragraph const & prevpar = prevcur.paragraph();
1556 // if a bibitem is deleted, merge with previous paragraph
1557 // if this is a bibliography item as well
1558 if (cur.pit() > 0 && par.layout() == prevpar.layout()) {
1559 cur.recordUndo(prevcur.pit());
1560 mergeParagraph(bufparams, cur.text()->paragraphs(),
1562 cur.forceBufferUpdate();
1563 setCursorIntern(cur, prevcur.pit(), prevcur.pos());
1564 cur.screenUpdateFlags(Update::Force);
1568 // otherwise reset to default
1569 cur.paragraph().setPlainOrDefaultLayout(bufparams.documentClass());
1574 bool Text::erase(Cursor & cur)
1576 LASSERT(this == cur.text(), return false);
1577 bool needsUpdate = false;
1578 Paragraph & par = cur.paragraph();
1580 if (cur.pos() != cur.lastpos()) {
1581 // this is the code for a normal delete, not pasting
1583 cur.recordUndo(DELETE_UNDO);
1584 bool const was_inset = cur.paragraph().isInset(cur.pos());
1585 if(!par.eraseChar(cur.pos(), cur.buffer()->params().track_changes))
1586 // the character has been logically deleted only => skip it
1587 cur.top().forwardPos();
1590 cur.forceBufferUpdate();
1592 cur.checkBufferStructure();
1595 if (cur.pit() == cur.lastpit())
1596 return dissolveInset(cur);
1598 if (!par.isMergedOnEndOfParDeletion(cur.buffer()->params().track_changes)) {
1599 par.setChange(cur.pos(), Change(Change::DELETED));
1603 setCursorIntern(cur, cur.pit() + 1, 0);
1604 needsUpdate = backspacePos0(cur);
1608 needsUpdate |= handleBibitems(cur);
1611 // Make sure the cursor is correct. Is this really needed?
1612 // No, not really... at least not here!
1613 cur.text()->setCursor(cur.top(), cur.pit(), cur.pos());
1614 cur.checkBufferStructure();
1621 bool Text::backspacePos0(Cursor & cur)
1623 LBUFERR(this == cur.text());
1627 bool needsUpdate = false;
1629 BufferParams const & bufparams = cur.buffer()->params();
1630 DocumentClass const & tclass = bufparams.documentClass();
1631 ParagraphList & plist = cur.text()->paragraphs();
1632 Paragraph const & par = cur.paragraph();
1633 Cursor prevcur = cur;
1635 prevcur.pos() = prevcur.lastpos();
1636 Paragraph const & prevpar = prevcur.paragraph();
1638 // is it an empty paragraph?
1639 if (cur.lastpos() == 0
1640 || (cur.lastpos() == 1 && par.isSeparator(0))) {
1641 cur.recordUndo(prevcur.pit());
1642 plist.erase(next(plist.begin(), cur.pit()));
1645 // is previous par empty?
1646 else if (prevcur.lastpos() == 0
1647 || (prevcur.lastpos() == 1 && prevpar.isSeparator(0))) {
1648 cur.recordUndo(prevcur.pit());
1649 plist.erase(next(plist.begin(), prevcur.pit()));
1652 // Pasting is not allowed, if the paragraphs have different
1653 // layouts. I think it is a real bug of all other
1654 // word processors to allow it. It confuses the user.
1655 // Correction: Pasting is always allowed with standard-layout
1656 // or the empty layout.
1657 else if (par.layout() == prevpar.layout()
1658 || tclass.isDefaultLayout(par.layout())
1659 || tclass.isPlainLayout(par.layout())) {
1660 cur.recordUndo(prevcur.pit());
1661 mergeParagraph(bufparams, plist, prevcur.pit());
1666 cur.forceBufferUpdate();
1667 setCursorIntern(cur, prevcur.pit(), prevcur.pos());
1674 bool Text::backspace(Cursor & cur)
1676 LBUFERR(this == cur.text());
1677 bool needsUpdate = false;
1678 if (cur.pos() == 0) {
1680 return dissolveInset(cur);
1682 Cursor prev_cur = cur;
1685 if (!prev_cur.paragraph().isMergedOnEndOfParDeletion(cur.buffer()->params().track_changes)) {
1686 cur.recordUndo(prev_cur.pit(), prev_cur.pit());
1687 prev_cur.paragraph().setChange(prev_cur.lastpos(), Change(Change::DELETED));
1688 setCursorIntern(cur, prev_cur.pit(), prev_cur.lastpos());
1691 // The cursor is at the beginning of a paragraph, so
1692 // the backspace will collapse two paragraphs into one.
1693 needsUpdate = backspacePos0(cur);
1696 // this is the code for a normal backspace, not pasting
1698 cur.recordUndo(DELETE_UNDO);
1699 // We used to do cursorBackwardIntern() here, but it is
1700 // not a good idea since it triggers the auto-delete
1701 // mechanism. So we do a cursorBackwardIntern()-lite,
1702 // without the dreaded mechanism. (JMarc)
1703 setCursorIntern(cur, cur.pit(), cur.pos() - 1,
1704 false, cur.boundary());
1705 bool const was_inset = cur.paragraph().isInset(cur.pos());
1706 cur.paragraph().eraseChar(cur.pos(), cur.buffer()->params().track_changes);
1708 cur.forceBufferUpdate();
1710 cur.checkBufferStructure();
1713 if (cur.pos() == cur.lastpos())
1714 cur.setCurrentFont();
1716 needsUpdate |= handleBibitems(cur);
1718 // A singlePar update is not enough in this case.
1719 // cur.screenUpdateFlags(Update::Force);
1720 setCursor(cur.top(), cur.pit(), cur.pos());
1726 bool Text::dissolveInset(Cursor & cur)
1728 LASSERT(this == cur.text(), return false);
1730 if (isMainText() || cur.inset().nargs() != 1)
1733 cur.recordUndoInset();
1735 cur.selHandle(false);
1737 pos_type spos = cur.pos();
1738 pit_type spit = cur.pit();
1739 ParagraphList plist;
1740 if (cur.lastpit() != 0 || cur.lastpos() != 0)
1741 plist = paragraphs();
1743 // store cursor offset
1747 Buffer & b = *cur.buffer();
1748 cur.paragraph().eraseChar(cur.pos(), b.params().track_changes);
1750 if (!plist.empty()) {
1752 // we clear the cache so that we won't get conflicts with labels
1753 // that get pasted into the buffer. we should update this before
1754 // its being empty matters. if not (i.e., if we encounter bugs),
1755 // then this should instead be:
1756 // cur.buffer().updateBuffer();
1757 // but we'll try the cheaper solution here.
1758 cur.buffer()->clearReferenceCache();
1760 // ERT paragraphs have the Language latex_language.
1761 // This is invalid outside of ERT, so we need to
1762 // change it to the buffer language.
1763 ParagraphList::iterator it = plist.begin();
1764 ParagraphList::iterator it_end = plist.end();
1765 for (; it != it_end; ++it)
1766 it->changeLanguage(b.params(), latex_language, b.language());
1768 pasteParagraphList(cur, plist, b.params().documentClassPtr(),
1769 b.errorList("Paste"));
1771 cur.pit() = min(cur.lastpit(), spit);
1772 cur.pos() = min(cur.lastpos(), spos);
1775 cur.forceBufferUpdate();
1777 // Ensure the current language is set correctly (bug 6292)
1778 cur.text()->setCursor(cur, cur.pit(), cur.pos());
1779 cur.clearSelection();
1785 void Text::getWord(CursorSlice & from, CursorSlice & to,
1786 word_location const loc) const
1789 pars_[to.pit()].locateWord(from.pos(), to.pos(), loc);
1793 void Text::write(ostream & os) const
1795 Buffer const & buf = owner_->buffer();
1796 ParagraphList::const_iterator pit = paragraphs().begin();
1797 ParagraphList::const_iterator end = paragraphs().end();
1799 for (; pit != end; ++pit)
1800 pit->write(os, buf.params(), dth);
1802 // Close begin_deeper
1803 for(; dth > 0; --dth)
1804 os << "\n\\end_deeper";
1808 bool Text::read(Lexer & lex,
1809 ErrorList & errorList, InsetText * insetPtr)
1811 Buffer const & buf = owner_->buffer();
1812 depth_type depth = 0;
1815 while (lex.isOK()) {
1817 string const token = lex.getString();
1822 if (token == "\\end_inset")
1825 if (token == "\\end_body")
1828 if (token == "\\begin_body")
1831 if (token == "\\end_document") {
1836 if (token == "\\begin_layout") {
1837 lex.pushToken(token);
1840 par.setInsetOwner(insetPtr);
1841 par.params().depth(depth);
1842 par.setFont(0, Font(inherit_font, buf.params().language));
1843 pars_.push_back(par);
1844 readParagraph(pars_.back(), lex, errorList);
1846 // register the words in the global word list
1847 pars_.back().updateWords();
1848 } else if (token == "\\begin_deeper") {
1850 } else if (token == "\\end_deeper") {
1852 lex.printError("\\end_deeper: " "depth is already null");
1856 LYXERR0("Handling unknown body token: `" << token << '\'');
1860 // avoid a crash on weird documents (bug 4859)
1861 if (pars_.empty()) {
1863 par.setInsetOwner(insetPtr);
1864 par.params().depth(depth);
1865 par.setFont(0, Font(inherit_font,
1866 buf.params().language));
1867 par.setPlainOrDefaultLayout(buf.params().documentClass());
1868 pars_.push_back(par);
1875 // Returns the current font and depth as a message.
1876 docstring Text::currentState(Cursor const & cur) const
1878 LBUFERR(this == cur.text());
1879 Buffer & buf = *cur.buffer();
1880 Paragraph const & par = cur.paragraph();
1881 odocstringstream os;
1883 if (buf.params().track_changes)
1884 os << _("[Change Tracking] ");
1886 Change change = par.lookupChange(cur.pos());
1888 if (change.changed()) {
1889 Author const & a = buf.params().authors().get(change.author);
1890 os << _("Change: ") << a.name();
1891 if (!a.email().empty())
1892 os << " (" << a.email() << ")";
1893 // FIXME ctime is english, we should translate that
1894 os << _(" at ") << ctime(&change.changetime);
1898 // I think we should only show changes from the default
1900 // No, from the document font (MV)
1901 Font font = cur.real_current_font;
1902 font.fontInfo().reduce(buf.params().getFont().fontInfo());
1904 os << bformat(_("Font: %1$s"), font.stateText(&buf.params()));
1906 // The paragraph depth
1907 int depth = cur.paragraph().getDepth();
1909 os << bformat(_(", Depth: %1$d"), depth);
1911 // The paragraph spacing, but only if different from
1913 Spacing const & spacing = par.params().spacing();
1914 if (!spacing.isDefault()) {
1915 os << _(", Spacing: ");
1916 switch (spacing.getSpace()) {
1917 case Spacing::Single:
1920 case Spacing::Onehalf:
1923 case Spacing::Double:
1926 case Spacing::Other:
1927 os << _("Other (") << from_ascii(spacing.getValueAsString()) << ')';
1929 case Spacing::Default:
1930 // should never happen, do nothing
1935 #ifdef DEVEL_VERSION
1936 os << _(", Inset: ") << &cur.inset();
1937 os << _(", Paragraph: ") << cur.pit();
1938 os << _(", Id: ") << par.id();
1939 os << _(", Position: ") << cur.pos();
1940 // FIXME: Why is the check for par.size() needed?
1941 // We are called with cur.pos() == par.size() quite often.
1942 if (!par.empty() && cur.pos() < par.size()) {
1943 // Force output of code point, not character
1944 size_t const c = par.getChar(cur.pos());
1945 os << _(", Char: 0x") << hex << c;
1947 os << _(", Boundary: ") << cur.boundary();
1948 // Row & row = cur.textRow();
1949 // os << bformat(_(", Row b:%1$d e:%2$d"), row.pos(), row.endpos());
1955 docstring Text::getPossibleLabel(Cursor const & cur) const
1957 pit_type pit = cur.pit();
1959 Layout const * layout = &(pars_[pit].layout());
1962 docstring par_text = pars_[pit].asString();
1964 // The return string of math matrices might contain linebreaks
1965 par_text = subst(par_text, '\n', '-');
1966 int const numwords = 3;
1967 for (int i = 0; i < numwords; ++i) {
1968 if (par_text.empty())
1971 par_text = split(par_text, head, ' ');
1972 // Is it legal to use spaces in labels ?
1978 // Make sure it isn't too long
1979 unsigned int const max_label_length = 32;
1980 if (text.size() > max_label_length)
1981 text.resize(max_label_length);
1983 // Will contain the label prefix.
1986 // For section, subsection, etc...
1987 if (layout->latextype == LATEX_PARAGRAPH && pit != 0) {
1988 Layout const * layout2 = &(pars_[pit - 1].layout());
1989 if (layout2->latextype != LATEX_PARAGRAPH) {
1994 if (layout->latextype != LATEX_PARAGRAPH)
1995 name = layout->refprefix;
1997 // For captions, we just take the caption type
1998 Inset * caption_inset = cur.innerInsetOfType(CAPTION_CODE);
1999 if (caption_inset) {
2000 string const & ftype = static_cast<InsetCaption *>(caption_inset)->floattype();
2001 FloatList const & fl = cur.buffer()->params().documentClass().floats();
2002 if (fl.typeExist(ftype)) {
2003 Floating const & flt = fl.getType(ftype);
2004 name = from_utf8(flt.refPrefix());
2007 name = from_utf8(ftype.substr(0,3));
2010 // If none of the above worked, see if the inset knows.
2012 InsetLayout const & il = cur.inset().getLayout();
2013 name = il.refprefix();
2017 text = name + ':' + text;
2019 // We need a unique label
2020 docstring label = text;
2022 while (cur.buffer()->insetLabel(label)) {
2023 label = text + '-' + convert<docstring>(i);
2031 docstring Text::asString(int options) const
2033 return asString(0, pars_.size(), options);
2037 docstring Text::asString(pit_type beg, pit_type end, int options) const
2039 size_t i = size_t(beg);
2040 docstring str = pars_[i].asString(options);
2041 for (++i; i != size_t(end); ++i) {
2043 str += pars_[i].asString(options);
2049 void Text::forOutliner(docstring & os, size_t maxlen, bool shorten) const
2051 LASSERT(maxlen >= 8, maxlen = TOC_ENTRY_LENGTH);
2052 for (size_t i = 0; i != pars_.size() && os.length() < maxlen; ++i)
2053 pars_[i].forOutliner(os, maxlen);
2054 if (shorten && os.length() >= maxlen)
2055 os = os.substr(0, maxlen - 3) + from_ascii("...");
2059 void Text::charsTranspose(Cursor & cur)
2061 LBUFERR(this == cur.text());
2063 pos_type pos = cur.pos();
2065 // If cursor is at beginning or end of paragraph, do nothing.
2066 if (pos == cur.lastpos() || pos == 0)
2069 Paragraph & par = cur.paragraph();
2071 // Get the positions of the characters to be transposed.
2072 pos_type pos1 = pos - 1;
2073 pos_type pos2 = pos;
2075 // In change tracking mode, ignore deleted characters.
2076 while (pos2 < cur.lastpos() && par.isDeleted(pos2))
2078 if (pos2 == cur.lastpos())
2081 while (pos1 >= 0 && par.isDeleted(pos1))
2086 // Don't do anything if one of the "characters" is not regular text.
2087 if (par.isInset(pos1) || par.isInset(pos2))
2090 // Store the characters to be transposed (including font information).
2091 char_type const char1 = par.getChar(pos1);
2093 par.getFontSettings(cur.buffer()->params(), pos1);
2095 char_type const char2 = par.getChar(pos2);
2097 par.getFontSettings(cur.buffer()->params(), pos2);
2099 // And finally, we are ready to perform the transposition.
2100 // Track the changes if Change Tracking is enabled.
2101 bool const trackChanges = cur.buffer()->params().track_changes;
2105 par.eraseChar(pos2, trackChanges);
2106 par.eraseChar(pos1, trackChanges);
2107 par.insertChar(pos1, char2, font2, trackChanges);
2108 par.insertChar(pos2, char1, font1, trackChanges);
2110 cur.checkBufferStructure();
2112 // After the transposition, move cursor to after the transposition.
2113 setCursor(cur, cur.pit(), pos2);
2118 DocIterator Text::macrocontextPosition() const
2120 return macrocontext_position_;
2124 void Text::setMacrocontextPosition(DocIterator const & pos)
2126 macrocontext_position_ = pos;
2130 docstring Text::previousWord(CursorSlice const & sl) const
2132 CursorSlice from = sl;
2133 CursorSlice to = sl;
2134 getWord(from, to, PREVIOUS_WORD);
2135 if (sl == from || to == from)
2138 Paragraph const & par = sl.paragraph();
2139 return par.asString(from.pos(), to.pos());
2143 bool Text::completionSupported(Cursor const & cur) const
2145 Paragraph const & par = cur.paragraph();
2146 return cur.pos() > 0
2147 && (cur.pos() >= par.size() || par.isWordSeparator(cur.pos()))
2148 && !par.isWordSeparator(cur.pos() - 1);
2152 CompletionList const * Text::createCompletionList(Cursor const & cur) const
2154 WordList const * list = theWordList(cur.getFont().language()->lang());
2155 return new TextCompletionList(cur, list);
2159 bool Text::insertCompletion(Cursor & cur, docstring const & s, bool /*finished*/)
2161 LBUFERR(cur.bv().cursor() == cur);
2163 cur.bv().cursor() = cur;
2164 if (!(cur.result().screenUpdate() & Update::Force))
2165 cur.screenUpdateFlags(cur.result().screenUpdate() | Update::SinglePar);
2170 docstring Text::completionPrefix(Cursor const & cur) const
2172 return previousWord(cur.top());