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 Alfredo Braunstein
9 * \author Jean-Marc Lasgouttes
10 * \author Angus Leeming
12 * \author André Pönitz
14 * \author Stefan Schimanski
16 * \author Jürgen Vigna
18 * Full author contact details are available in file CREDITS.
27 #include "buffer_funcs.h"
28 #include "BufferList.h"
29 #include "BufferParams.h"
30 #include "BufferView.h"
33 #include "CutAndPaste.h"
34 #include "DispatchResult.h"
35 #include "ErrorList.h"
36 #include "FuncRequest.h"
42 #include "Paragraph.h"
43 #include "paragraph_funcs.h"
44 #include "ParagraphParameters.h"
45 #include "TextClass.h"
46 #include "TextMetrics.h"
49 #include "insets/InsetCollapsable.h"
51 #include "mathed/InsetMathHull.h"
53 #include "support/lassert.h"
54 #include "support/debug.h"
55 #include "support/gettext.h"
56 #include "support/textutils.h"
58 #include <boost/next_prior.hpp>
66 bool Text::isMainText() const
68 return &owner_->buffer().text() == this;
72 // Note that this is supposed to return a fully realized font.
73 FontInfo Text::layoutFont(pit_type const pit) const
75 Layout const & layout = pars_[pit].layout();
77 if (!pars_[pit].getDepth()) {
78 FontInfo lf = layout.resfont;
79 // In case the default family has been customized
80 if (layout.font.family() == INHERIT_FAMILY)
81 lf.setFamily(owner_->buffer().params().getFont().fontInfo().family());
83 // It ought to be possible here just to use Inset::getLayout() and skip
84 // the asInsetCollapsable() bit. Unfortunatley, that doesn't work right
85 // now, because Inset::getLayout() will return a default-constructed
86 // InsetLayout, and that e.g. sets the foreground color to red. So we
87 // need to do some work to make that possible.
88 InsetCollapsable const * icp = pars_[pit].inInset().asInsetCollapsable();
91 FontInfo icf = icp->getLayout().font();
96 FontInfo font = layout.font;
97 // Realize with the fonts of lesser depth.
98 //font.realize(outerFont(pit, paragraphs()));
99 font.realize(owner_->buffer().params().getFont().fontInfo());
105 // Note that this is supposed to return a fully realized font.
106 FontInfo Text::labelFont(Paragraph const & par) const
108 Buffer const & buffer = owner_->buffer();
109 Layout const & layout = par.layout();
111 if (!par.getDepth()) {
112 FontInfo lf = layout.reslabelfont;
113 // In case the default family has been customized
114 if (layout.labelfont.family() == INHERIT_FAMILY)
115 lf.setFamily(buffer.params().getFont().fontInfo().family());
119 FontInfo font = layout.labelfont;
120 // Realize with the fonts of lesser depth.
121 font.realize(buffer.params().getFont().fontInfo());
127 void Text::setCharFont(pit_type pit,
128 pos_type pos, Font const & fnt, Font const & display_font)
130 Buffer const & buffer = owner_->buffer();
132 Layout const & layout = pars_[pit].layout();
134 // Get concrete layout font to reduce against
137 if (pos < pars_[pit].beginOfBody())
138 layoutfont = layout.labelfont;
140 layoutfont = layout.font;
142 // Realize against environment font information
143 if (pars_[pit].getDepth()) {
145 while (!layoutfont.resolved() &&
146 tp != pit_type(paragraphs().size()) &&
147 pars_[tp].getDepth()) {
148 tp = outerHook(tp, paragraphs());
149 if (tp != pit_type(paragraphs().size()))
150 layoutfont.realize(pars_[tp].layout().font);
154 // Inside inset, apply the inset's font attributes if any
157 layoutfont.realize(display_font.fontInfo());
159 layoutfont.realize(buffer.params().getFont().fontInfo());
161 // Now, reduce font against full layout font
162 font.fontInfo().reduce(layoutfont);
164 pars_[pit].setFont(pos, font);
168 void Text::setInsetFont(BufferView const & bv, pit_type pit,
169 pos_type pos, Font const & font, bool toggleall)
171 Inset * const inset = pars_[pit].getInset(pos);
172 LASSERT(inset && inset->noFontChange(), /**/);
174 CursorSlice::idx_type endidx = inset->nargs();
175 for (CursorSlice cs(*inset); cs.idx() != endidx; ++cs.idx()) {
176 Text * text = cs.text();
178 // last position of the cell
179 CursorSlice cellend = cs;
180 cellend.pit() = cellend.lastpit();
181 cellend.pos() = cellend.lastpos();
182 text->setFont(bv, cs, cellend, font, toggleall);
188 // return past-the-last paragraph influenced by a layout change on pit
189 pit_type Text::undoSpan(pit_type pit)
191 pit_type const end = paragraphs().size();
192 pit_type nextpit = pit + 1;
195 //because of parindents
196 if (!pars_[pit].getDepth())
197 return boost::next(nextpit);
198 //because of depth constrains
199 for (; nextpit != end; ++pit, ++nextpit) {
200 if (!pars_[pit].getDepth())
207 void Text::setLayout(pit_type start, pit_type end,
208 docstring const & layout)
210 LASSERT(start != end, /**/);
212 Buffer const & buffer = owner_->buffer();
213 BufferParams const & bp = buffer.params();
214 Layout const & lyxlayout = bp.documentClass()[layout];
216 for (pit_type pit = start; pit != end; ++pit) {
217 Paragraph & par = pars_[pit];
218 par.applyLayout(lyxlayout);
219 if (lyxlayout.margintype == MARGIN_MANUAL)
220 par.setLabelWidthString(par.expandLabel(lyxlayout, bp));
225 // set layout over selection and make a total rebreak of those paragraphs
226 void Text::setLayout(Cursor & cur, docstring const & layout)
228 LASSERT(this == cur.text(), /**/);
230 pit_type start = cur.selBegin().pit();
231 pit_type end = cur.selEnd().pit() + 1;
232 pit_type undopit = undoSpan(end - 1);
233 recUndo(cur, start, undopit - 1);
234 setLayout(start, end, layout);
235 cur.buffer()->updateLabels();
239 static bool changeDepthAllowed(Text::DEPTH_CHANGE type,
240 Paragraph const & par, int max_depth)
242 if (par.layout().labeltype == LABEL_BIBLIO)
244 int const depth = par.params().depth();
245 if (type == Text::INC_DEPTH && depth < max_depth)
247 if (type == Text::DEC_DEPTH && depth > 0)
253 bool Text::changeDepthAllowed(Cursor & cur, DEPTH_CHANGE type) const
255 LASSERT(this == cur.text(), /**/);
256 // this happens when selecting several cells in tabular (bug 2630)
257 if (cur.selBegin().idx() != cur.selEnd().idx())
260 pit_type const beg = cur.selBegin().pit();
261 pit_type const end = cur.selEnd().pit() + 1;
262 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
264 for (pit_type pit = beg; pit != end; ++pit) {
265 if (lyx::changeDepthAllowed(type, pars_[pit], max_depth))
267 max_depth = pars_[pit].getMaxDepthAfter();
273 void Text::changeDepth(Cursor & cur, DEPTH_CHANGE type)
275 LASSERT(this == cur.text(), /**/);
276 pit_type const beg = cur.selBegin().pit();
277 pit_type const end = cur.selEnd().pit() + 1;
278 cur.recordUndoSelection();
279 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
281 for (pit_type pit = beg; pit != end; ++pit) {
282 Paragraph & par = pars_[pit];
283 if (lyx::changeDepthAllowed(type, par, max_depth)) {
284 int const depth = par.params().depth();
285 if (type == INC_DEPTH)
286 par.params().depth(depth + 1);
288 par.params().depth(depth - 1);
290 max_depth = par.getMaxDepthAfter();
292 // this handles the counter labels, and also fixes up
293 // depth values for follow-on (child) paragraphs
294 cur.buffer()->updateLabels();
298 void Text::setFont(Cursor & cur, Font const & font, bool toggleall)
300 LASSERT(this == cur.text(), /**/);
301 // Set the current_font
302 // Determine basis font
304 pit_type pit = cur.pit();
305 if (cur.pos() < pars_[pit].beginOfBody())
306 layoutfont = labelFont(pars_[pit]);
308 layoutfont = layoutFont(pit);
310 // Update current font
311 cur.real_current_font.update(font,
312 cur.buffer()->params().language,
315 // Reduce to implicit settings
316 cur.current_font = cur.real_current_font;
317 cur.current_font.fontInfo().reduce(layoutfont);
318 // And resolve it completely
319 cur.real_current_font.fontInfo().realize(layoutfont);
321 // if there is no selection that's all we need to do
322 if (!cur.selection())
325 // Ok, we have a selection.
326 cur.recordUndoSelection();
328 setFont(cur.bv(), cur.selectionBegin().top(),
329 cur.selectionEnd().top(), font, toggleall);
333 void Text::setFont(BufferView const & bv, CursorSlice const & begin,
334 CursorSlice const & end, Font const & font,
337 Buffer const & buffer = bv.buffer();
339 // Don't use forwardChar here as ditend might have
340 // pos() == lastpos() and forwardChar would miss it.
341 // Can't use forwardPos either as this descends into
343 Language const * language = buffer.params().language;
344 for (CursorSlice dit = begin; dit != end; dit.forwardPos()) {
345 if (dit.pos() == dit.lastpos())
347 pit_type const pit = dit.pit();
348 pos_type const pos = dit.pos();
349 Inset * inset = pars_[pit].getInset(pos);
350 if (inset && inset->noFontChange()) {
351 // We need to propagate the font change to all
352 // text cells of the inset (bug 1973).
353 // FIXME: This should change, see documentation
354 // of noFontChange in Inset.h
355 setInsetFont(bv, pit, pos, font, toggleall);
357 TextMetrics const & tm = bv.textMetrics(this);
358 Font f = tm.displayFont(pit, pos);
359 f.update(font, language, toggleall);
360 setCharFont(pit, pos, f, tm.font_);
365 bool Text::cursorTop(Cursor & cur)
367 LASSERT(this == cur.text(), /**/);
368 return setCursor(cur, 0, 0);
372 bool Text::cursorBottom(Cursor & cur)
374 LASSERT(this == cur.text(), /**/);
375 return setCursor(cur, cur.lastpit(), boost::prior(paragraphs().end())->size());
379 void Text::toggleFree(Cursor & cur, Font const & font, bool toggleall)
381 LASSERT(this == cur.text(), /**/);
382 // If the mask is completely neutral, tell user
383 if (font.fontInfo() == ignore_font && font.language() == ignore_language) {
384 // Could only happen with user style
385 cur.message(_("No font change defined."));
389 // Try implicit word selection
390 // If there is a change in the language the implicit word selection
392 CursorSlice const resetCursor = cur.top();
393 bool const implicitSelection =
394 font.language() == ignore_language
395 && font.fontInfo().number() == FONT_IGNORE
396 && selectWordWhenUnderCursor(cur, WHOLE_WORD_STRICT);
399 setFont(cur, font, toggleall);
401 // Implicit selections are cleared afterwards
402 // and cursor is set to the original position.
403 if (implicitSelection) {
404 cur.clearSelection();
405 cur.top() = resetCursor;
411 docstring Text::getStringToIndex(Cursor const & cur)
413 LASSERT(this == cur.text(), /**/);
416 return cur.selectionAsString(false);
418 // Try implicit word selection. If there is a change
419 // in the language the implicit word selection is
422 selectWord(tmpcur, PREVIOUS_WORD);
424 if (!tmpcur.selection())
425 cur.message(_("Nothing to index!"));
426 else if (tmpcur.selBegin().pit() != tmpcur.selEnd().pit())
427 cur.message(_("Cannot index more than one paragraph!"));
429 return tmpcur.selectionAsString(false);
435 void Text::setParagraphs(Cursor & cur, docstring arg, bool merge)
437 LASSERT(cur.text(), /**/);
438 // make sure that the depth behind the selection are restored, too
439 pit_type undopit = undoSpan(cur.selEnd().pit());
440 recUndo(cur, cur.selBegin().pit(), undopit - 1);
443 string const argument = to_utf8(arg);
444 depth_type priordepth = -1;
446 for (pit_type pit = cur.selBegin().pit(), end = cur.selEnd().pit();
448 Paragraph & par = pars_[pit];
449 ParagraphParameters params = par.params();
450 params.read(argument, merge);
451 // Changes to label width string apply to all paragraphs
452 // with same layout in a sequence.
453 // Do this only once for a selected range of paragraphs
454 // of the same layout and depth.
455 if (par.getDepth() != priordepth || par.layout() != priorlayout)
456 setLabelWidthStringToSequence(pit, pars_,
457 params.labelWidthString());
458 par.params().apply(params, par.layout());
459 priordepth = par.getDepth();
460 priorlayout = par.layout();
465 //FIXME This is a little redundant now, but it's probably worth keeping,
466 //especially if we're going to go away from using serialization internally
468 void Text::setParagraphs(Cursor & cur, ParagraphParameters const & p)
470 LASSERT(cur.text(), /**/);
471 // make sure that the depth behind the selection are restored, too
472 pit_type undopit = undoSpan(cur.selEnd().pit());
473 recUndo(cur, cur.selBegin().pit(), undopit - 1);
475 depth_type priordepth = -1;
477 for (pit_type pit = cur.selBegin().pit(), end = cur.selEnd().pit();
479 Paragraph & par = pars_[pit];
480 // Changes to label width string apply to all paragraphs
481 // with same layout in a sequence.
482 // Do this only once for a selected range of paragraphs
483 // of the same layout and depth.
484 if (par.getDepth() != priordepth || par.layout() != priorlayout)
485 setLabelWidthStringToSequence(pit, pars_,
486 par.params().labelWidthString());
487 par.params().apply(p, par.layout());
488 priordepth = par.getDepth();
489 priorlayout = par.layout();
494 // this really should just insert the inset and not move the cursor.
495 void Text::insertInset(Cursor & cur, Inset * inset)
497 LASSERT(this == cur.text(), /**/);
498 LASSERT(inset, /**/);
499 cur.paragraph().insertInset(cur.pos(), inset, cur.current_font,
500 Change(cur.buffer()->params().trackChanges
501 ? Change::INSERTED : Change::UNCHANGED));
505 // needed to insert the selection
506 void Text::insertStringAsLines(DocIterator const & dit, docstring const & str,
509 BufferParams const & bparams = owner_->buffer().params();
510 pit_type pit = dit.pit();
511 pos_type pos = dit.pos();
513 // insert the string, don't insert doublespace
514 bool space_inserted = true;
515 for (docstring::const_iterator cit = str.begin();
516 cit != str.end(); ++cit) {
517 Paragraph & par = pars_[pit];
519 if (autoBreakRows_ && (!par.empty() || par.allowEmpty())) {
520 lyx::breakParagraph(bparams, pars_, pit, pos,
521 par.layout().isEnvironment());
524 space_inserted = true;
528 // do not insert consecutive spaces if !free_spacing
529 } else if ((*cit == ' ' || *cit == '\t') &&
530 space_inserted && !par.isFreeSpacing()) {
532 } else if (*cit == '\t') {
533 if (!par.isFreeSpacing()) {
534 // tabs are like spaces here
535 par.insertChar(pos, ' ', font, bparams.trackChanges);
537 space_inserted = true;
539 par.insertChar(pos, *cit, font, bparams.trackChanges);
541 space_inserted = true;
543 } else if (!isPrintable(*cit)) {
544 // Ignore unprintables
547 // just insert the character
548 par.insertChar(pos, *cit, font, bparams.trackChanges);
550 space_inserted = (*cit == ' ');
556 // turn double CR to single CR, others are converted into one
557 // blank. Then insertStringAsLines is called
558 void Text::insertStringAsParagraphs(DocIterator const & dit, docstring const & str,
561 docstring linestr = str;
562 bool newline_inserted = false;
564 for (string::size_type i = 0, siz = linestr.size(); i < siz; ++i) {
565 if (linestr[i] == '\n') {
566 if (newline_inserted) {
567 // we know that \r will be ignored by
568 // insertStringAsLines. Of course, it is a dirty
569 // trick, but it works...
570 linestr[i - 1] = '\r';
574 newline_inserted = true;
576 } else if (isPrintable(linestr[i])) {
577 newline_inserted = false;
580 insertStringAsLines(dit, linestr, font);
584 bool Text::setCursor(Cursor & cur, pit_type par, pos_type pos,
585 bool setfont, bool boundary)
587 TextMetrics const & tm = cur.bv().textMetrics(this);
588 bool const update_needed = !tm.contains(par);
590 setCursorIntern(cur, par, pos, setfont, boundary);
591 return cur.bv().checkDepm(cur, old) || update_needed;
595 void Text::setCursor(CursorSlice & cur, pit_type par, pos_type pos)
597 LASSERT(par != int(paragraphs().size()), /**/);
601 // now some strict checking
602 Paragraph & para = getPar(par);
604 // None of these should happen, but we're scaredy-cats
606 lyxerr << "dont like -1" << endl;
607 LASSERT(false, /**/);
610 if (pos > para.size()) {
611 lyxerr << "dont like 1, pos: " << pos
612 << " size: " << para.size()
613 << " par: " << par << endl;
614 LASSERT(false, /**/);
619 void Text::setCursorIntern(Cursor & cur,
620 pit_type par, pos_type pos, bool setfont, bool boundary)
622 LASSERT(this == cur.text(), /**/);
623 cur.boundary(boundary);
624 setCursor(cur.top(), par, pos);
626 cur.setCurrentFont();
630 bool Text::checkAndActivateInset(Cursor & cur, bool front)
634 if (front && cur.pos() == cur.lastpos())
636 if (!front && cur.pos() == 0)
638 Inset * inset = front ? cur.nextInset() : cur.prevInset();
639 if (!inset || !inset->editable())
642 * Apparently, when entering an inset we are expected to be positioned
643 * *before* it in the containing paragraph, regardless of the direction
644 * from which we are entering. Otherwise, cursor placement goes awry,
645 * and when we exit from the beginning, we'll be placed *after* the
650 inset->edit(cur, front);
655 bool Text::checkAndActivateInsetVisual(Cursor & cur, bool movingForward, bool movingLeft)
661 if (cur.pos() == cur.lastpos())
663 Paragraph & par = cur.paragraph();
664 Inset * inset = par.isInset(cur.pos()) ? par.getInset(cur.pos()) : 0;
665 if (!inset || !inset->editable())
667 inset->edit(cur, movingForward,
668 movingLeft ? Inset::ENTRY_DIRECTION_RIGHT : Inset::ENTRY_DIRECTION_LEFT);
673 bool Text::cursorBackward(Cursor & cur)
675 // Tell BufferView to test for FitCursor in any case!
676 cur.updateFlags(Update::FitCursor);
678 // not at paragraph start?
680 // if on right side of boundary (i.e. not at paragraph end, but line end)
681 // -> skip it, i.e. set boundary to true, i.e. go only logically left
682 // there are some exceptions to ignore this: lineseps, newlines, spaces
684 // some effectless debug code to see the values in the debugger
685 bool bound = cur.boundary();
686 int rowpos = cur.textRow().pos();
688 bool sep = cur.paragraph().isSeparator(cur.pos() - 1);
689 bool newline = cur.paragraph().isNewline(cur.pos() - 1);
690 bool linesep = cur.paragraph().isLineSeparator(cur.pos() - 1);
692 if (!cur.boundary() &&
693 cur.textRow().pos() == cur.pos() &&
694 !cur.paragraph().isLineSeparator(cur.pos() - 1) &&
695 !cur.paragraph().isNewline(cur.pos() - 1) &&
696 !cur.paragraph().isSeparator(cur.pos() - 1)) {
697 return setCursor(cur, cur.pit(), cur.pos(), true, true);
700 // go left and try to enter inset
701 if (checkAndActivateInset(cur, false))
704 // normal character left
705 return setCursor(cur, cur.pit(), cur.pos() - 1, true, false);
708 // move to the previous paragraph or do nothing
710 return setCursor(cur, cur.pit() - 1, getPar(cur.pit() - 1).size(), true, false);
715 bool Text::cursorVisLeft(Cursor & cur, bool skip_inset)
717 Cursor temp_cur = cur;
718 temp_cur.posVisLeft(skip_inset);
719 if (temp_cur.depth() > cur.depth()) {
723 return setCursor(cur, temp_cur.pit(), temp_cur.pos(),
724 true, temp_cur.boundary());
728 bool Text::cursorVisRight(Cursor & cur, bool skip_inset)
730 Cursor temp_cur = cur;
731 temp_cur.posVisRight(skip_inset);
732 if (temp_cur.depth() > cur.depth()) {
736 return setCursor(cur, temp_cur.pit(), temp_cur.pos(),
737 true, temp_cur.boundary());
741 bool Text::cursorForward(Cursor & cur)
743 // Tell BufferView to test for FitCursor in any case!
744 cur.updateFlags(Update::FitCursor);
746 // not at paragraph end?
747 if (cur.pos() != cur.lastpos()) {
748 // in front of editable inset, i.e. jump into it?
749 if (checkAndActivateInset(cur, true))
752 TextMetrics const & tm = cur.bv().textMetrics(this);
753 // if left of boundary -> just jump to right side
754 // but for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
755 if (cur.boundary() && !tm.isRTLBoundary(cur.pit(), cur.pos()))
756 return setCursor(cur, cur.pit(), cur.pos(), true, false);
758 // next position is left of boundary,
759 // but go to next line for special cases like space, newline, linesep
761 // some effectless debug code to see the values in the debugger
762 int endpos = cur.textRow().endpos();
763 int lastpos = cur.lastpos();
765 bool linesep = cur.paragraph().isLineSeparator(cur.pos());
766 bool newline = cur.paragraph().isNewline(cur.pos());
767 bool sep = cur.paragraph().isSeparator(cur.pos());
768 if (cur.pos() != cur.lastpos()) {
769 bool linesep2 = cur.paragraph().isLineSeparator(cur.pos()+1);
770 bool newline2 = cur.paragraph().isNewline(cur.pos()+1);
771 bool sep2 = cur.paragraph().isSeparator(cur.pos()+1);
774 if (cur.textRow().endpos() == cur.pos() + 1 &&
775 cur.textRow().endpos() != cur.lastpos() &&
776 !cur.paragraph().isNewline(cur.pos()) &&
777 !cur.paragraph().isLineSeparator(cur.pos()) &&
778 !cur.paragraph().isSeparator(cur.pos())) {
779 return setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
782 // in front of RTL boundary? Stay on this side of the boundary because:
783 // ab|cDDEEFFghi -> abc|DDEEFFghi
784 if (tm.isRTLBoundary(cur.pit(), cur.pos() + 1))
785 return setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
788 return setCursor(cur, cur.pit(), cur.pos() + 1, true, false);
791 // move to next paragraph
792 if (cur.pit() != cur.lastpit())
793 return setCursor(cur, cur.pit() + 1, 0, true, false);
798 bool Text::cursorUpParagraph(Cursor & cur)
800 bool updated = false;
802 updated = setCursor(cur, cur.pit(), 0);
803 else if (cur.pit() != 0)
804 updated = setCursor(cur, cur.pit() - 1, 0);
809 bool Text::cursorDownParagraph(Cursor & cur)
811 bool updated = false;
812 if (cur.pit() != cur.lastpit())
813 updated = setCursor(cur, cur.pit() + 1, 0);
815 updated = setCursor(cur, cur.pit(), cur.lastpos());
820 // fix the cursor `cur' after a characters has been deleted at `where'
821 // position. Called by deleteEmptyParagraphMechanism
822 void Text::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
824 // Do nothing if cursor is not in the paragraph where the
826 if (cur.pit() != where.pit())
829 // If cursor position is after the deletion place update it
830 if (cur.pos() > where.pos())
833 // Check also if we don't want to set the cursor on a spot behind the
834 // pagragraph because we erased the last character.
835 if (cur.pos() > cur.lastpos())
836 cur.pos() = cur.lastpos();
840 bool Text::deleteEmptyParagraphMechanism(Cursor & cur,
841 Cursor & old, bool & need_anchor_change)
843 //LYXERR(Debug::DEBUG, "DEPM: cur:\n" << cur << "old:\n" << old);
845 Paragraph & oldpar = old.paragraph();
847 // We allow all kinds of "mumbo-jumbo" when freespacing.
848 if (oldpar.isFreeSpacing())
851 /* Ok I'll put some comments here about what is missing.
852 There are still some small problems that can lead to
853 double spaces stored in the document file or space at
854 the beginning of paragraphs(). This happens if you have
855 the cursor between to spaces and then save. Or if you
856 cut and paste and the selection have a space at the
857 beginning and then save right after the paste. (Lgb)
860 // If old.pos() == 0 and old.pos()(1) == LineSeparator
861 // delete the LineSeparator.
864 // If old.pos() == 1 and old.pos()(0) == LineSeparator
865 // delete the LineSeparator.
868 // Find a common inset and the corresponding depth.
870 for (; depth < cur.depth(); ++depth)
871 if (&old.inset() == &cur[depth].inset())
874 // Whether a common inset is found and whether the cursor is still in
875 // the same paragraph (possibly nested).
876 bool const same_par = depth < cur.depth() && old.pit() == cur[depth].pit();
877 bool const same_par_pos = depth == cur.depth() - 1 && same_par
878 && old.pos() == cur[depth].pos();
880 // If the chars around the old cursor were spaces, delete one of them.
882 // Only if the cursor has really moved.
884 && old.pos() < oldpar.size()
885 && oldpar.isLineSeparator(old.pos())
886 && oldpar.isLineSeparator(old.pos() - 1)
887 && !oldpar.isDeleted(old.pos() - 1)
888 && !oldpar.isDeleted(old.pos())) {
889 oldpar.eraseChar(old.pos() - 1, cur.buffer()->params().trackChanges);
890 // FIXME: This will not work anymore when we have multiple views of the same buffer
891 // In this case, we will have to correct also the cursors held by
892 // other bufferviews. It will probably be easier to do that in a more
893 // automated way in CursorSlice code. (JMarc 26/09/2001)
894 // correct all cursor parts
896 fixCursorAfterDelete(cur[depth], old.top());
897 need_anchor_change = true;
903 // only do our magic if we changed paragraph
907 // don't delete anything if this is the ONLY paragraph!
908 if (old.lastpit() == 0)
911 // Do not delete empty paragraphs with keepempty set.
912 if (oldpar.allowEmpty())
915 if (oldpar.empty() || (oldpar.size() == 1 && oldpar.isLineSeparator(0))) {
917 old.recordUndo(ATOMIC_UNDO,
918 max(old.pit() - 1, pit_type(0)),
919 min(old.pit() + 1, old.lastpit()));
920 ParagraphList & plist = old.text()->paragraphs();
921 bool const soa = oldpar.params().startOfAppendix();
922 plist.erase(boost::next(plist.begin(), old.pit()));
923 // do not lose start of appendix marker (bug 4212)
924 if (soa && old.pit() < pit_type(plist.size()))
925 plist[old.pit()].params().startOfAppendix(true);
927 // see #warning (FIXME?) above
928 if (cur.depth() >= old.depth()) {
929 CursorSlice & curslice = cur[old.depth() - 1];
930 if (&curslice.inset() == &old.inset()
931 && curslice.pit() > old.pit()) {
933 // since a paragraph has been deleted, all the
934 // insets after `old' have been copied and
935 // their address has changed. Therefore we
936 // need to `regenerate' cur. (JMarc)
937 cur.updateInsets(&(cur.bottom().inset()));
938 need_anchor_change = true;
944 if (oldpar.stripLeadingSpaces(cur.buffer()->params().trackChanges)) {
945 need_anchor_change = true;
946 // We return true here because the Paragraph contents changed and
947 // we need a redraw before further action is processed.
955 void Text::deleteEmptyParagraphMechanism(pit_type first, pit_type last, bool trackChanges)
957 LASSERT(first >= 0 && first <= last && last < (int) pars_.size(), /**/);
959 for (pit_type pit = first; pit <= last; ++pit) {
960 Paragraph & par = pars_[pit];
962 // We allow all kinds of "mumbo-jumbo" when freespacing.
963 if (par.isFreeSpacing())
966 for (pos_type pos = 1; pos < par.size(); ++pos) {
967 if (par.isLineSeparator(pos) && par.isLineSeparator(pos - 1)
968 && !par.isDeleted(pos - 1)) {
969 if (par.eraseChar(pos - 1, trackChanges)) {
975 // don't delete anything if this is the only remaining paragraph within the given range
976 // note: Text::acceptOrRejectChanges() sets the cursor to 'first' after calling DEPM
980 // don't delete empty paragraphs with keepempty set
981 if (par.allowEmpty())
984 if (par.empty() || (par.size() == 1 && par.isLineSeparator(0))) {
985 pars_.erase(boost::next(pars_.begin(), pit));
991 par.stripLeadingSpaces(trackChanges);
996 void Text::recUndo(Cursor & cur, pit_type first, pit_type last) const
998 cur.recordUndo(ATOMIC_UNDO, first, last);
1002 void Text::recUndo(Cursor & cur, pit_type par) const
1004 cur.recordUndo(ATOMIC_UNDO, par, par);