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"
30 #include "ParIterator.h"
31 #include "CutAndPaste.h"
32 #include "DispatchResult.h"
34 #include "ErrorList.h"
35 #include "FuncRequest.h"
37 #include "FontIterator.h"
42 #include "Paragraph.h"
43 #include "paragraph_funcs.h"
44 #include "ParagraphParameters.h"
45 #include "TextClass.h"
46 #include "TextMetrics.h"
48 #include "WordLangTuple.h"
50 #include "frontends/FontMetrics.h"
51 #include "frontends/Painter.h"
53 #include "insets/InsetText.h"
54 #include "insets/InsetBibitem.h"
55 #include "insets/InsetCaption.h"
56 #include "insets/InsetHFill.h"
57 #include "insets/InsetLine.h"
58 #include "insets/InsetNewline.h"
59 #include "insets/InsetNewpage.h"
60 #include "insets/InsetOptArg.h"
61 #include "insets/InsetSpace.h"
62 #include "insets/InsetSpecialChar.h"
63 #include "insets/InsetTabular.h"
65 #include "support/convert.h"
66 #include "support/debug.h"
67 #include "support/docstream.h"
68 #include "support/gettext.h"
69 #include "support/lstrings.h"
70 #include "support/textutils.h"
72 #include <boost/next_prior.hpp>
77 using namespace lyx::support;
81 using cap::cutSelection;
82 using cap::pasteParagraphList;
84 using frontend::FontMetrics;
88 void readParToken(Buffer const & buf, Paragraph & par, Lexer & lex,
89 string const & token, Font & font, Change & change, ErrorList & errorList)
91 BufferParams const & bp = buf.params();
93 if (token[0] != '\\') {
94 docstring dstr = lex.getDocString();
95 par.appendString(dstr, font, change);
97 } else if (token == "\\begin_layout") {
99 docstring layoutname = lex.getDocString();
101 font = Font(inherit_font, bp.language);
102 change = Change(Change::UNCHANGED);
104 TextClass const & tclass = bp.getTextClass();
106 if (layoutname.empty()) {
107 layoutname = tclass.defaultLayoutName();
110 bool hasLayout = tclass.hasLayout(layoutname);
113 errorList.push_back(ErrorItem(_("Unknown layout"),
114 bformat(_("Layout '%1$s' does not exist in textclass '%2$s'\nTrying to use the default instead.\n"),
115 layoutname, from_utf8(tclass.name())), par.id(), 0, par.size()));
116 layoutname = tclass.defaultLayoutName();
119 par.layout(bp.getTextClass()[layoutname]);
121 // Test whether the layout is obsolete.
122 LayoutPtr const & layout = par.layout();
123 if (!layout->obsoleted_by().empty())
124 par.layout(bp.getTextClass()[layout->obsoleted_by()]);
126 par.params().read(lex);
128 } else if (token == "\\end_layout") {
129 LYXERR0("Solitary \\end_layout in line " << lex.getLineNo() << "\n"
130 << "Missing \\begin_layout ?");
131 } else if (token == "\\end_inset") {
132 LYXERR0("Solitary \\end_inset in line " << lex.getLineNo() << "\n"
133 << "Missing \\begin_inset ?");
134 } else if (token == "\\begin_inset") {
135 Inset * inset = readInset(lex, buf);
137 par.insertInset(par.size(), inset, font, change);
140 docstring line = lex.getDocString();
141 errorList.push_back(ErrorItem(_("Unknown Inset"), line,
142 par.id(), 0, par.size()));
144 } else if (token == "\\family") {
146 setLyXFamily(lex.getString(), font.fontInfo());
147 } else if (token == "\\series") {
149 setLyXSeries(lex.getString(), font.fontInfo());
150 } else if (token == "\\shape") {
152 setLyXShape(lex.getString(), font.fontInfo());
153 } else if (token == "\\size") {
155 setLyXSize(lex.getString(), font.fontInfo());
156 } else if (token == "\\lang") {
158 string const tok = lex.getString();
159 Language const * lang = languages.getLanguage(tok);
161 font.setLanguage(lang);
163 font.setLanguage(bp.language);
164 lex.printError("Unknown language `$$Token'");
166 } else if (token == "\\numeric") {
168 font.fontInfo().setNumber(font.setLyXMisc(lex.getString()));
169 } else if (token == "\\emph") {
171 font.fontInfo().setEmph(font.setLyXMisc(lex.getString()));
172 } else if (token == "\\bar") {
174 string const tok = lex.getString();
177 font.fontInfo().setUnderbar(FONT_ON);
178 else if (tok == "no")
179 font.fontInfo().setUnderbar(FONT_OFF);
180 else if (tok == "default")
181 font.fontInfo().setUnderbar(FONT_INHERIT);
183 lex.printError("Unknown bar font flag "
185 } else if (token == "\\noun") {
187 font.fontInfo().setNoun(font.setLyXMisc(lex.getString()));
188 } else if (token == "\\color") {
190 setLyXColor(lex.getString(), font.fontInfo());
191 } else if (token == "\\InsetSpace" || token == "\\SpecialChar") {
193 // Insets don't make sense in a free-spacing context! ---Kayvan
194 if (par.isFreeSpacing()) {
195 if (token == "\\InsetSpace")
196 par.appendChar(' ', font, change);
197 else if (lex.isOK()) {
199 string const next_token = lex.getString();
200 if (next_token == "\\-")
201 par.appendChar('-', font, change);
203 lex.printError("Token `$$Token' "
205 "paragraph layout!");
209 auto_ptr<Inset> inset;
210 if (token == "\\SpecialChar" )
211 inset.reset(new InsetSpecialChar);
213 inset.reset(new InsetSpace);
214 inset->read(buf, lex);
215 par.insertInset(par.size(), inset.release(),
218 } else if (token == "\\backslash") {
219 par.appendChar('\\', font, change);
220 } else if (token == "\\linebreak") {
221 auto_ptr<Inset> inset(new InsetLinebreak);
222 inset->read(buf, lex);
223 par.insertInset(par.size(), inset.release(), font, change);
224 } else if (token == "\\newline") {
225 auto_ptr<Inset> inset(new InsetNewline);
226 inset->read(buf, lex);
227 par.insertInset(par.size(), inset.release(), font, change);
228 } else if (token == "\\LyXTable") {
229 auto_ptr<Inset> inset(new InsetTabular(buf));
230 inset->read(buf, lex);
231 par.insertInset(par.size(), inset.release(), font, change);
232 } else if (token == "\\hfill") {
233 par.insertInset(par.size(), new InsetHFill, font, change);
234 } else if (token == "\\lyxline") {
235 par.insertInset(par.size(), new InsetLine, font, change);
236 } else if (token == "\\newpage") {
237 par.insertInset(par.size(), new InsetNewpage, font, change);
238 } else if (token == "\\pagebreak") {
239 par.insertInset(par.size(), new InsetPagebreak, font, change);
240 } else if (token == "\\clearpage") {
241 par.insertInset(par.size(), new InsetClearPage, font, change);
242 } else if (token == "\\cleardoublepage") {
243 par.insertInset(par.size(), new InsetClearDoublePage, font, change);
244 } else if (token == "\\change_unchanged") {
245 change = Change(Change::UNCHANGED);
246 } else if (token == "\\change_inserted") {
248 std::istringstream is(lex.getString());
252 if (aid >= bp.author_map.size()) {
253 errorList.push_back(ErrorItem(_("Change tracking error"),
254 bformat(_("Unknown author index for insertion: %1$d\n"), aid),
255 par.id(), 0, par.size()));
256 change = Change(Change::UNCHANGED);
258 change = Change(Change::INSERTED, bp.author_map[aid], ct);
259 } else if (token == "\\change_deleted") {
261 std::istringstream is(lex.getString());
265 if (aid >= bp.author_map.size()) {
266 errorList.push_back(ErrorItem(_("Change tracking error"),
267 bformat(_("Unknown author index for deletion: %1$d\n"), aid),
268 par.id(), 0, par.size()));
269 change = Change(Change::UNCHANGED);
271 change = Change(Change::DELETED, bp.author_map[aid], ct);
274 errorList.push_back(ErrorItem(_("Unknown token"),
275 bformat(_("Unknown token: %1$s %2$s\n"), from_utf8(token),
277 par.id(), 0, par.size()));
282 void readParagraph(Buffer const & buf, Paragraph & par, Lexer & lex,
283 ErrorList & errorList)
286 string token = lex.getString();
288 Change change(Change::UNCHANGED);
291 readParToken(buf, par, lex, token, font, change, errorList);
294 token = lex.getString();
299 if (token == "\\end_layout") {
300 //Ok, paragraph finished
304 LYXERR(Debug::PARSER, "Handling paragraph token: `" << token << '\'');
305 if (token == "\\begin_layout" || token == "\\end_document"
306 || token == "\\end_inset" || token == "\\begin_deeper"
307 || token == "\\end_deeper") {
308 lex.pushToken(token);
309 lyxerr << "Paragraph ended in line "
310 << lex.getLineNo() << "\n"
311 << "Missing \\end_layout.\n";
315 // Final change goes to paragraph break:
316 par.setChange(par.size(), change);
318 // Initialize begin_of_body_ on load; redoParagraph maintains
319 par.setBeginOfBody();
326 bool Text::empty() const
328 return pars_.empty() || (pars_.size() == 1 && pars_[0].empty()
329 // FIXME: Should we consider the labeled type as empty too?
330 && pars_[0].layout()->labeltype == LABEL_NO_LABEL);
334 double Text::spacing(Buffer const & buffer,
335 Paragraph const & par) const
337 if (par.params().spacing().isDefault())
338 return buffer.params().spacing().getValue();
339 return par.params().spacing().getValue();
343 void Text::breakParagraph(Cursor & cur, bool inverse_logic)
345 BOOST_ASSERT(this == cur.text());
347 Paragraph & cpar = cur.paragraph();
348 pit_type cpit = cur.pit();
350 TextClass const & tclass = cur.buffer().params().getTextClass();
351 LayoutPtr const & layout = cpar.layout();
353 // this is only allowed, if the current paragraph is not empty
354 // or caption and if it has not the keepempty flag active
355 if (cur.lastpos() == 0 && !cpar.allowEmpty() &&
356 layout->labeltype != LABEL_SENSITIVE)
359 // a layout change may affect also the following paragraph
360 recUndo(cur, cur.pit(), undoSpan(cur.pit()) - 1);
362 // Always break behind a space
363 // It is better to erase the space (Dekel)
364 if (cur.pos() != cur.lastpos() && cpar.isLineSeparator(cur.pos()))
365 cpar.eraseChar(cur.pos(), cur.buffer().params().trackChanges);
367 // What should the layout for the new paragraph be?
368 bool keep_layout = inverse_logic ?
369 !layout->isEnvironment()
370 : layout->isEnvironment();
372 // We need to remember this before we break the paragraph, because
373 // that invalidates the layout variable
374 bool sensitive = layout->labeltype == LABEL_SENSITIVE;
376 // we need to set this before we insert the paragraph.
377 bool const isempty = cpar.allowEmpty() && cpar.empty();
379 lyx::breakParagraph(cur.buffer().params(), paragraphs(), cpit,
380 cur.pos(), keep_layout);
382 // After this, neither paragraph contains any rows!
385 pit_type next_par = cpit + 1;
387 // well this is the caption hack since one caption is really enough
390 // set to standard-layout
391 pars_[cpit].applyLayout(tclass.defaultLayout());
393 // set to standard-layout
394 pars_[next_par].applyLayout(tclass.defaultLayout());
397 while (!pars_[next_par].empty() && pars_[next_par].isNewline(0)) {
398 if (!pars_[next_par].eraseChar(0, cur.buffer().params().trackChanges))
399 break; // the character couldn't be deleted physically due to change tracking
402 updateLabels(cur.buffer());
404 // A singlePar update is not enough in this case.
405 cur.updateFlags(Update::Force);
407 // This check is necessary. Otherwise the new empty paragraph will
408 // be deleted automatically. And it is more friendly for the user!
409 if (cur.pos() != 0 || isempty)
410 setCursor(cur, cur.pit() + 1, 0);
412 setCursor(cur, cur.pit(), 0);
416 // insert a character, moves all the following breaks in the
417 // same Paragraph one to the right and make a rebreak
418 void Text::insertChar(Cursor & cur, char_type c)
420 BOOST_ASSERT(this == cur.text());
422 cur.recordUndo(INSERT_UNDO);
424 TextMetrics const & tm = cur.bv().textMetrics(this);
425 Buffer const & buffer = cur.buffer();
426 Paragraph & par = cur.paragraph();
427 // try to remove this
428 pit_type const pit = cur.pit();
430 bool const freeSpacing = par.layout()->free_spacing ||
433 if (lyxrc.auto_number) {
434 static docstring const number_operators = from_ascii("+-/*");
435 static docstring const number_unary_operators = from_ascii("+-");
436 static docstring const number_seperators = from_ascii(".,:");
438 if (cur.current_font.fontInfo().number() == FONT_ON) {
439 if (!isDigit(c) && !contains(number_operators, c) &&
440 !(contains(number_seperators, c) &&
442 cur.pos() != cur.lastpos() &&
443 tm.getDisplayFont(pit, cur.pos()).fontInfo().number() == FONT_ON &&
444 tm.getDisplayFont(pit, cur.pos() - 1).fontInfo().number() == FONT_ON)
446 number(cur); // Set current_font.number to OFF
447 } else if (isDigit(c) &&
448 cur.real_current_font.isVisibleRightToLeft()) {
449 number(cur); // Set current_font.number to ON
451 if (cur.pos() != 0) {
452 char_type const c = par.getChar(cur.pos() - 1);
453 if (contains(number_unary_operators, c) &&
455 || par.isSeparator(cur.pos() - 2)
456 || par.isNewline(cur.pos() - 2))
458 setCharFont(buffer, pit, cur.pos() - 1, cur.current_font,
460 } else if (contains(number_seperators, c)
462 && tm.getDisplayFont(pit, cur.pos() - 2).fontInfo().number() == FONT_ON) {
463 setCharFont(buffer, pit, cur.pos() - 1, cur.current_font,
470 // In Bidi text, we want spaces to be treated in a special way: spaces
471 // which are between words in different languages should get the
472 // paragraph's language; otherwise, spaces should keep the language
473 // they were originally typed in. This is only in effect while typing;
474 // after the text is already typed in, the user can always go back and
475 // explicitly set the language of a space as desired. But 99.9% of the
476 // time, what we're doing here is what the user actually meant.
478 // The following cases are the ones in which the language of the space
479 // should be changed to match that of the containing paragraph. In the
480 // depictions, lowercase is LTR, uppercase is RTL, underscore (_)
481 // represents a space, pipe (|) represents the cursor position (so the
482 // character before it is the one just typed in). The different cases
483 // are depicted logically (not visually), from left to right:
488 // Theoretically, there are other situations that we should, perhaps, deal
489 // with (e.g.: a|_A, A|_a). In practice, though, there really isn't any
490 // point (to understand why, just try to create this situation...).
492 if ((cur.pos() >= 2) && (par.isLineSeparator(cur.pos() - 1))) {
493 // get font in front and behind the space in question. But do NOT
494 // use getFont(cur.pos()) because the character c is not inserted yet
495 Font const pre_space_font = tm.getDisplayFont(cur.pit(), cur.pos() - 2);
496 Font const & post_space_font = cur.real_current_font;
497 bool pre_space_rtl = pre_space_font.isVisibleRightToLeft();
498 bool post_space_rtl = post_space_font.isVisibleRightToLeft();
500 if (pre_space_rtl != post_space_rtl) {
501 // Set the space's language to match the language of the
502 // adjacent character whose direction is the paragraph's
503 // direction; don't touch other properties of the font
504 Language const * lang =
505 (pre_space_rtl == par.isRTL(buffer.params())) ?
506 pre_space_font.language() : post_space_font.language();
508 Font space_font = tm.getDisplayFont(cur.pit(), cur.pos() - 1);
509 space_font.setLanguage(lang);
510 par.setFont(cur.pos() - 1, space_font);
514 // Next check, if there will be two blanks together or a blank at
515 // the beginning of a paragraph.
516 // I decided to handle blanks like normal characters, the main
517 // difference are the special checks when calculating the row.fill
518 // (blank does not count at the end of a row) and the check here
520 // When the free-spacing option is set for the current layout,
521 // disable the double-space checking
522 if (!freeSpacing && isLineSeparatorChar(c)) {
523 if (cur.pos() == 0) {
524 static bool sent_space_message = false;
525 if (!sent_space_message) {
526 cur.message(_("You cannot insert a space at the "
527 "beginning of a paragraph. Please read the Tutorial."));
528 sent_space_message = true;
532 BOOST_ASSERT(cur.pos() > 0);
533 if ((par.isLineSeparator(cur.pos() - 1) || par.isNewline(cur.pos() - 1))
534 && !par.isDeleted(cur.pos() - 1)) {
535 static bool sent_space_message = false;
536 if (!sent_space_message) {
537 cur.message(_("You cannot type two spaces this way. "
538 "Please read the Tutorial."));
539 sent_space_message = true;
545 par.insertChar(cur.pos(), c, cur.current_font, cur.buffer().params().trackChanges);
546 checkBufferStructure(cur.buffer(), cur);
548 // cur.updateFlags(Update::Force);
549 setCursor(cur.top(), cur.pit(), cur.pos() + 1);
554 void Text::charInserted(Cursor & cur)
556 // Here we call finishUndo for every 20 characters inserted.
557 // This is from my experience how emacs does it. (Lgb)
558 static unsigned int counter;
568 // the cursor set functions have a special mechanism. When they
569 // realize, that you left an empty paragraph, they will delete it.
571 bool Text::cursorForwardOneWord(Cursor & cur)
573 BOOST_ASSERT(this == cur.text());
577 if (old.pos() == old.lastpos() && old.pit() != old.lastpit()) {
581 // Advance through word.
582 while (old.pos() != old.lastpos() && old.paragraph().isLetter(old.pos()))
584 // Skip through trailing nonword stuff.
585 while (old.pos() != old.lastpos() && !old.paragraph().isLetter(old.pos()))
588 return setCursor(cur, old.pit(), old.pos());
592 bool Text::cursorBackwardOneWord(Cursor & cur)
594 BOOST_ASSERT(this == cur.text());
598 if (old.pos() == 0 && old.pit() != 0) {
600 old.pos() = old.lastpos();
602 // Skip through initial nonword stuff.
603 while (old.pos() != 0 && !old.paragraph().isLetter(old.pos() - 1))
605 // Advance through word.
606 while (old.pos() != 0 && old.paragraph().isLetter(old.pos() - 1))
609 return setCursor(cur, old.pit(), old.pos());
613 void Text::selectWord(Cursor & cur, word_location loc)
615 BOOST_ASSERT(this == cur.text());
616 CursorSlice from = cur.top();
617 CursorSlice to = cur.top();
618 getWord(from, to, loc);
619 if (cur.top() != from)
620 setCursor(cur, from.pit(), from.pos());
624 setCursor(cur, to.pit(), to.pos());
629 // Select the word currently under the cursor when no
630 // selection is currently set
631 bool Text::selectWordWhenUnderCursor(Cursor & cur, word_location loc)
633 BOOST_ASSERT(this == cur.text());
636 selectWord(cur, loc);
637 return cur.selection();
641 void Text::acceptOrRejectChanges(Cursor & cur, ChangeOp op)
643 BOOST_ASSERT(this == cur.text());
645 if (!cur.selection())
648 cur.recordUndoSelection();
650 pit_type begPit = cur.selectionBegin().pit();
651 pit_type endPit = cur.selectionEnd().pit();
653 pos_type begPos = cur.selectionBegin().pos();
654 pos_type endPos = cur.selectionEnd().pos();
656 // keep selection info, because endPos becomes invalid after the first loop
657 bool endsBeforeEndOfPar = (endPos < pars_[endPit].size());
659 // first, accept/reject changes within each individual paragraph (do not consider end-of-par)
661 for (pit_type pit = begPit; pit <= endPit; ++pit) {
662 pos_type parSize = pars_[pit].size();
664 // ignore empty paragraphs; otherwise, an assertion will fail for
665 // acceptChanges(bparams, 0, 0) or rejectChanges(bparams, 0, 0)
669 // do not consider first paragraph if the cursor starts at pos size()
670 if (pit == begPit && begPos == parSize)
673 // do not consider last paragraph if the cursor ends at pos 0
674 if (pit == endPit && endPos == 0)
675 break; // last iteration anyway
677 pos_type left = (pit == begPit ? begPos : 0);
678 pos_type right = (pit == endPit ? endPos : parSize);
681 pars_[pit].acceptChanges(cur.buffer().params(), left, right);
683 pars_[pit].rejectChanges(cur.buffer().params(), left, right);
687 // next, accept/reject imaginary end-of-par characters
689 for (pit_type pit = begPit; pit <= endPit; ++pit) {
690 pos_type pos = pars_[pit].size();
692 // skip if the selection ends before the end-of-par
693 if (pit == endPit && endsBeforeEndOfPar)
694 break; // last iteration anyway
696 // skip if this is not the last paragraph of the document
697 // note: the user should be able to accept/reject the par break of the last par!
698 if (pit == endPit && pit + 1 != int(pars_.size()))
699 break; // last iteration anway
702 if (pars_[pit].isInserted(pos)) {
703 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
704 } else if (pars_[pit].isDeleted(pos)) {
705 if (pit + 1 == int(pars_.size())) {
706 // we cannot remove a par break at the end of the last paragraph;
707 // instead, we mark it unchanged
708 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
710 mergeParagraph(cur.buffer().params(), pars_, pit);
716 if (pars_[pit].isDeleted(pos)) {
717 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
718 } else if (pars_[pit].isInserted(pos)) {
719 if (pit + 1 == int(pars_.size())) {
720 // we mark the par break at the end of the last paragraph unchanged
721 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
723 mergeParagraph(cur.buffer().params(), pars_, pit);
731 // finally, invoke the DEPM
733 deleteEmptyParagraphMechanism(begPit, endPit, cur.buffer().params().trackChanges);
738 cur.clearSelection();
739 setCursorIntern(cur, begPit, begPos);
740 cur.updateFlags(Update::Force);
741 updateLabels(cur.buffer());
745 void Text::acceptChanges(BufferParams const & bparams)
747 lyx::acceptChanges(pars_, bparams);
748 deleteEmptyParagraphMechanism(0, pars_.size() - 1, bparams.trackChanges);
752 void Text::rejectChanges(BufferParams const & bparams)
754 pit_type pars_size = static_cast<pit_type>(pars_.size());
756 // first, reject changes within each individual paragraph
757 // (do not consider end-of-par)
758 for (pit_type pit = 0; pit < pars_size; ++pit) {
759 if (!pars_[pit].empty()) // prevent assertion failure
760 pars_[pit].rejectChanges(bparams, 0, pars_[pit].size());
763 // next, reject imaginary end-of-par characters
764 for (pit_type pit = 0; pit < pars_size; ++pit) {
765 pos_type pos = pars_[pit].size();
767 if (pars_[pit].isDeleted(pos)) {
768 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
769 } else if (pars_[pit].isInserted(pos)) {
770 if (pit == pars_size - 1) {
771 // we mark the par break at the end of the last
772 // paragraph unchanged
773 pars_[pit].setChange(pos, Change(Change::UNCHANGED));
775 mergeParagraph(bparams, pars_, pit);
782 // finally, invoke the DEPM
783 deleteEmptyParagraphMechanism(0, pars_size - 1, bparams.trackChanges);
787 void Text::deleteWordForward(Cursor & cur)
789 BOOST_ASSERT(this == cur.text());
790 if (cur.lastpos() == 0)
794 cur.selection() = true;
795 cursorForwardOneWord(cur);
797 cutSelection(cur, true, false);
798 checkBufferStructure(cur.buffer(), cur);
803 void Text::deleteWordBackward(Cursor & cur)
805 BOOST_ASSERT(this == cur.text());
806 if (cur.lastpos() == 0)
810 cur.selection() = true;
811 cursorBackwardOneWord(cur);
813 cutSelection(cur, true, false);
814 checkBufferStructure(cur.buffer(), cur);
819 // Kill to end of line.
820 void Text::changeCase(Cursor & cur, TextCase action)
822 BOOST_ASSERT(this == cur.text());
826 if (cur.selection()) {
827 from = cur.selBegin();
831 getWord(from, to, PARTIAL_WORD);
832 cursorForwardOneWord(cur);
835 cur.recordUndoSelection();
837 pit_type begPit = from.pit();
838 pit_type endPit = to.pit();
840 pos_type begPos = from.pos();
841 pos_type endPos = to.pos();
843 pos_type right = 0; // needed after the for loop
845 for (pit_type pit = begPit; pit <= endPit; ++pit) {
846 Paragraph & par = pars_[pit];
847 pos_type const pos = (pit == begPit ? begPos : 0);
848 right = (pit == endPit ? endPos : par.size());
849 par.changeCase(cur.buffer().params(), pos, right, action);
852 // the selection may have changed due to logically-only deleted chars
853 setCursor(cur, begPit, begPos);
855 setCursor(cur, endPit, right);
858 checkBufferStructure(cur.buffer(), cur);
862 bool Text::handleBibitems(Cursor & cur)
864 if (cur.paragraph().layout()->labeltype != LABEL_BIBLIO)
866 // if a bibitem is deleted, merge with previous paragraph
867 // if this is a bibliography item as well
868 if (cur.pos() == 0) {
869 BufferParams const & bufparams = cur.buffer().params();
870 Paragraph const & par = cur.paragraph();
871 Cursor prevcur = cur;
874 prevcur.pos() = prevcur.lastpos();
876 Paragraph const & prevpar = prevcur.paragraph();
877 if (cur.pit() > 0 && par.layout() == prevpar.layout()) {
878 cur.recordUndo(ATOMIC_UNDO, prevcur.pit());
879 mergeParagraph(bufparams, cur.text()->paragraphs(),
881 updateLabels(cur.buffer());
882 setCursorIntern(cur, prevcur.pit(), prevcur.pos());
883 cur.updateFlags(Update::Force);
884 // if not, reset the paragraph to default
886 cur.paragraph().layout(
887 bufparams.getTextClass().defaultLayout());
894 bool Text::erase(Cursor & cur)
896 BOOST_ASSERT(this == cur.text());
897 bool needsUpdate = false;
898 Paragraph & par = cur.paragraph();
900 if (cur.pos() != cur.lastpos()) {
901 // this is the code for a normal delete, not pasting
903 cur.recordUndo(DELETE_UNDO);
904 if(!par.eraseChar(cur.pos(), cur.buffer().params().trackChanges)) {
905 // the character has been logically deleted only => skip it
906 cur.top().forwardPos();
908 checkBufferStructure(cur.buffer(), cur);
911 if (cur.pit() == cur.lastpit())
912 return dissolveInset(cur);
914 if (!par.isMergedOnEndOfParDeletion(cur.buffer().params().trackChanges)) {
915 par.setChange(cur.pos(), Change(Change::DELETED));
919 setCursorIntern(cur, cur.pit() + 1, 0);
920 needsUpdate = backspacePos0(cur);
924 needsUpdate |= handleBibitems(cur);
927 // Make sure the cursor is correct. Is this really needed?
928 // No, not really... at least not here!
929 cur.text()->setCursor(cur.top(), cur.pit(), cur.pos());
930 checkBufferStructure(cur.buffer(), cur);
937 bool Text::backspacePos0(Cursor & cur)
939 BOOST_ASSERT(this == cur.text());
943 bool needsUpdate = false;
945 BufferParams const & bufparams = cur.buffer().params();
946 TextClass const & tclass = bufparams.getTextClass();
947 ParagraphList & plist = cur.text()->paragraphs();
948 Paragraph const & par = cur.paragraph();
949 Cursor prevcur = cur;
951 prevcur.pos() = prevcur.lastpos();
952 Paragraph const & prevpar = prevcur.paragraph();
954 // is it an empty paragraph?
955 if (cur.lastpos() == 0
956 || (cur.lastpos() == 1 && par.isSeparator(0))) {
957 cur.recordUndo(ATOMIC_UNDO, prevcur.pit(), cur.pit());
958 plist.erase(boost::next(plist.begin(), cur.pit()));
961 // is previous par empty?
962 else if (prevcur.lastpos() == 0
963 || (prevcur.lastpos() == 1 && prevpar.isSeparator(0))) {
964 cur.recordUndo(ATOMIC_UNDO, prevcur.pit(), cur.pit());
965 plist.erase(boost::next(plist.begin(), prevcur.pit()));
968 // Pasting is not allowed, if the paragraphs have different
969 // layouts. I think it is a real bug of all other
970 // word processors to allow it. It confuses the user.
971 // Correction: Pasting is always allowed with standard-layout
972 else if (par.layout() == prevpar.layout()
973 || par.layout() == tclass.defaultLayout()) {
974 cur.recordUndo(ATOMIC_UNDO, prevcur.pit());
975 mergeParagraph(bufparams, plist, prevcur.pit());
980 updateLabels(cur.buffer());
981 setCursorIntern(cur, prevcur.pit(), prevcur.pos());
988 bool Text::backspace(Cursor & cur)
990 BOOST_ASSERT(this == cur.text());
991 bool needsUpdate = false;
992 if (cur.pos() == 0) {
994 return dissolveInset(cur);
996 Paragraph & prev_par = pars_[cur.pit() - 1];
998 if (!prev_par.isMergedOnEndOfParDeletion(cur.buffer().params().trackChanges)) {
999 prev_par.setChange(prev_par.size(), Change(Change::DELETED));
1000 setCursorIntern(cur, cur.pit() - 1, prev_par.size());
1003 // The cursor is at the beginning of a paragraph, so
1004 // the backspace will collapse two paragraphs into one.
1005 needsUpdate = backspacePos0(cur);
1008 // this is the code for a normal backspace, not pasting
1010 cur.recordUndo(DELETE_UNDO);
1011 // We used to do cursorBackwardIntern() here, but it is
1012 // not a good idea since it triggers the auto-delete
1013 // mechanism. So we do a cursorBackwardIntern()-lite,
1014 // without the dreaded mechanism. (JMarc)
1015 setCursorIntern(cur, cur.pit(), cur.pos() - 1,
1016 false, cur.boundary());
1017 cur.paragraph().eraseChar(cur.pos(), cur.buffer().params().trackChanges);
1018 checkBufferStructure(cur.buffer(), cur);
1021 if (cur.pos() == cur.lastpos())
1022 cur.setCurrentFont();
1024 needsUpdate |= handleBibitems(cur);
1026 // A singlePar update is not enough in this case.
1027 // cur.updateFlags(Update::Force);
1028 setCursor(cur.top(), cur.pit(), cur.pos());
1034 bool Text::dissolveInset(Cursor & cur) {
1035 BOOST_ASSERT(this == cur.text());
1037 if (isMainText(cur.bv().buffer()) || cur.inset().nargs() != 1)
1040 cur.recordUndoInset();
1041 cur.selHandle(false);
1043 pos_type spos = cur.pos();
1044 pit_type spit = cur.pit();
1045 ParagraphList plist;
1046 if (cur.lastpit() != 0 || cur.lastpos() != 0)
1047 plist = paragraphs();
1049 // store cursor offset
1053 Buffer & b = cur.buffer();
1054 cur.paragraph().eraseChar(cur.pos(), b.params().trackChanges);
1055 if (!plist.empty()) {
1056 // ERT paragraphs have the Language latex_language.
1057 // This is invalid outside of ERT, so we need to
1058 // change it to the buffer language.
1059 ParagraphList::iterator it = plist.begin();
1060 ParagraphList::iterator it_end = plist.end();
1061 for (; it != it_end; it++)
1062 it->changeLanguage(b.params(), latex_language, b.language());
1064 pasteParagraphList(cur, plist, b.params().getTextClassPtr(),
1065 b.errorList("Paste"));
1067 cur.pit() = std::min(cur.lastpit(), spit);
1068 cur.pos() = std::min(cur.lastpos(), spos);
1070 cur.clearSelection();
1076 void Text::getWord(CursorSlice & from, CursorSlice & to,
1077 word_location const loc)
1079 Paragraph const & from_par = pars_[from.pit()];
1081 case WHOLE_WORD_STRICT:
1082 if (from.pos() == 0 || from.pos() == from_par.size()
1083 || !from_par.isLetter(from.pos())
1084 || !from_par.isLetter(from.pos() - 1)) {
1088 // no break here, we go to the next
1091 // If we are already at the beginning of a word, do nothing
1092 if (!from.pos() || !from_par.isLetter(from.pos() - 1))
1094 // no break here, we go to the next
1097 // always move the cursor to the beginning of previous word
1098 while (from.pos() && from_par.isLetter(from.pos() - 1))
1102 LYXERR0("Text::getWord: NEXT_WORD not implemented yet");
1105 // no need to move the 'from' cursor
1109 Paragraph & to_par = pars_[to.pit()];
1110 while (to.pos() < to_par.size() && to_par.isLetter(to.pos()))
1115 void Text::write(Buffer const & buf, std::ostream & os) const
1117 ParagraphList::const_iterator pit = paragraphs().begin();
1118 ParagraphList::const_iterator end = paragraphs().end();
1120 for (; pit != end; ++pit)
1121 pit->write(buf, os, buf.params(), dth);
1123 // Close begin_deeper
1124 for(; dth > 0; --dth)
1125 os << "\n\\end_deeper";
1129 bool Text::read(Buffer const & buf, Lexer & lex, ErrorList & errorList)
1131 depth_type depth = 0;
1133 while (lex.isOK()) {
1135 string const token = lex.getString();
1140 if (token == "\\end_inset")
1143 if (token == "\\end_body")
1146 if (token == "\\begin_body")
1149 if (token == "\\end_document")
1152 if (token == "\\begin_layout") {
1153 lex.pushToken(token);
1156 par.params().depth(depth);
1157 par.setFont(0, Font(inherit_font, buf.params().language));
1158 pars_.push_back(par);
1160 // FIXME: goddamn InsetTabular makes us pass a Buffer
1162 lyx::readParagraph(buf, pars_.back(), lex, errorList);
1164 } else if (token == "\\begin_deeper") {
1166 } else if (token == "\\end_deeper") {
1168 lex.printError("\\end_deeper: " "depth is already null");
1172 LYXERR0("Handling unknown body token: `" << token << '\'');
1178 // Returns the current font and depth as a message.
1179 docstring Text::currentState(Cursor & cur)
1181 BOOST_ASSERT(this == cur.text());
1182 Buffer & buf = cur.buffer();
1183 Paragraph const & par = cur.paragraph();
1184 odocstringstream os;
1186 if (buf.params().trackChanges)
1187 os << _("[Change Tracking] ");
1189 Change change = par.lookupChange(cur.pos());
1191 if (change.type != Change::UNCHANGED) {
1192 Author const & a = buf.params().authors().get(change.author);
1193 os << _("Change: ") << a.name();
1194 if (!a.email().empty())
1195 os << " (" << a.email() << ")";
1196 // FIXME ctime is english, we should translate that
1197 os << _(" at ") << ctime(&change.changetime);
1201 // I think we should only show changes from the default
1203 // No, from the document font (MV)
1204 Font font = cur.real_current_font;
1205 font.fontInfo().reduce(buf.params().getFont().fontInfo());
1207 os << bformat(_("Font: %1$s"), font.stateText(&buf.params()));
1209 // The paragraph depth
1210 int depth = cur.paragraph().getDepth();
1212 os << bformat(_(", Depth: %1$d"), depth);
1214 // The paragraph spacing, but only if different from
1216 Spacing const & spacing = par.params().spacing();
1217 if (!spacing.isDefault()) {
1218 os << _(", Spacing: ");
1219 switch (spacing.getSpace()) {
1220 case Spacing::Single:
1223 case Spacing::Onehalf:
1226 case Spacing::Double:
1229 case Spacing::Other:
1230 os << _("Other (") << from_ascii(spacing.getValueAsString()) << ')';
1232 case Spacing::Default:
1233 // should never happen, do nothing
1238 #ifdef DEVEL_VERSION
1239 os << _(", Inset: ") << &cur.inset();
1240 os << _(", Paragraph: ") << cur.pit();
1241 os << _(", Id: ") << par.id();
1242 os << _(", Position: ") << cur.pos();
1243 // FIXME: Why is the check for par.size() needed?
1244 // We are called with cur.pos() == par.size() quite often.
1245 if (!par.empty() && cur.pos() < par.size()) {
1246 // Force output of code point, not character
1247 size_t const c = par.getChar(cur.pos());
1248 os << _(", Char: 0x") << std::hex << c;
1250 os << _(", Boundary: ") << cur.boundary();
1251 // Row & row = cur.textRow();
1252 // os << bformat(_(", Row b:%1$d e:%2$d"), row.pos(), row.endpos());
1258 docstring Text::getPossibleLabel(Cursor & cur) const
1260 pit_type pit = cur.pit();
1262 LayoutPtr layout = pars_[pit].layout();
1265 docstring par_text = pars_[pit].asString(cur.buffer(), false);
1267 // the return string of math matrices might contain linebreaks
1268 par_text = subst(par_text, '\n', '-');
1269 for (int i = 0; i < lyxrc.label_init_length; ++i) {
1270 if (par_text.empty())
1273 par_text = split(par_text, head, ' ');
1274 // Is it legal to use spaces in labels ?
1280 // No need for a prefix if the user said so.
1281 if (lyxrc.label_init_length <= 0)
1284 // Will contain the label type.
1287 // For section, subsection, etc...
1288 if (layout->latextype == LATEX_PARAGRAPH && pit != 0) {
1289 LayoutPtr const & layout2 = pars_[pit - 1].layout();
1290 if (layout2->latextype != LATEX_PARAGRAPH) {
1295 if (layout->latextype != LATEX_PARAGRAPH)
1296 name = from_ascii(layout->latexname());
1298 // for captions, we just take the caption type
1299 Inset * caption_inset = cur.innerInsetOfType(CAPTION_CODE);
1301 name = from_ascii(static_cast<InsetCaption *>(caption_inset)->type());
1303 // If none of the above worked, we'll see if we're inside various
1304 // types of insets and take our abbreviation from them.
1306 InsetCode const codes[] = {
1311 for (unsigned int i = 0; i < (sizeof codes / sizeof codes[0]); ++i) {
1312 Inset * float_inset = cur.innerInsetOfType(codes[i]);
1314 name = float_inset->name();
1320 // Create a correct prefix for prettyref
1321 if (name == "theorem")
1322 name = from_ascii("thm");
1323 else if (name == "Foot")
1324 name = from_ascii("fn");
1325 else if (name == "listing")
1326 name = from_ascii("lst");
1329 text = name.substr(0, 3) + ':' + text;
1335 void Text::charsTranspose(Cursor & cur)
1337 BOOST_ASSERT(this == cur.text());
1339 pos_type pos = cur.pos();
1341 // If cursor is at beginning or end of paragraph, do nothing.
1342 if (pos == cur.lastpos() || pos == 0)
1345 Paragraph & par = cur.paragraph();
1347 // Get the positions of the characters to be transposed.
1348 pos_type pos1 = pos - 1;
1349 pos_type pos2 = pos;
1351 // In change tracking mode, ignore deleted characters.
1352 while (pos2 < cur.lastpos() && par.isDeleted(pos2))
1354 if (pos2 == cur.lastpos())
1357 while (pos1 >= 0 && par.isDeleted(pos1))
1362 // Don't do anything if one of the "characters" is not regular text.
1363 if (par.isInset(pos1) || par.isInset(pos2))
1366 // Store the characters to be transposed (including font information).
1367 char_type char1 = par.getChar(pos1);
1369 par.getFontSettings(cur.buffer().params(), pos1);
1371 char_type char2 = par.getChar(pos2);
1373 par.getFontSettings(cur.buffer().params(), pos2);
1375 // And finally, we are ready to perform the transposition.
1376 // Track the changes if Change Tracking is enabled.
1377 bool const trackChanges = cur.buffer().params().trackChanges;
1381 par.eraseChar(pos2, trackChanges);
1382 par.eraseChar(pos1, trackChanges);
1383 par.insertChar(pos1, char2, font2, trackChanges);
1384 par.insertChar(pos2, char1, font1, trackChanges);
1386 checkBufferStructure(cur.buffer(), cur);
1388 // After the transposition, move cursor to after the transposition.
1389 setCursor(cur, cur.pit(), pos2);