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"
41 #include "Paragraph.h"
42 #include "ParagraphParameters.h"
43 #include "TextClass.h"
44 #include "TextMetrics.h"
46 #include "insets/InsetCollapsable.h"
48 #include "mathed/InsetMathHull.h"
50 #include "support/lassert.h"
51 #include "support/debug.h"
52 #include "support/gettext.h"
53 #include "support/textutils.h"
55 #include <boost/next_prior.hpp>
63 bool Text::isMainText() const
65 return &owner_->buffer().text() == this;
69 // Note that this is supposed to return a fully realized font.
70 FontInfo Text::layoutFont(pit_type const pit) const
72 Layout const & layout = pars_[pit].layout();
74 if (!pars_[pit].getDepth()) {
75 FontInfo lf = layout.resfont;
76 // In case the default family has been customized
77 if (layout.font.family() == INHERIT_FAMILY)
78 lf.setFamily(owner_->buffer().params().getFont().fontInfo().family());
79 FontInfo icf = owner_->getLayout().font();
84 FontInfo font = layout.font;
85 // Realize with the fonts of lesser depth.
86 //font.realize(outerFont(pit));
87 font.realize(owner_->buffer().params().getFont().fontInfo());
93 // Note that this is supposed to return a fully realized font.
94 FontInfo Text::labelFont(Paragraph const & par) const
96 Buffer const & buffer = owner_->buffer();
97 Layout const & layout = par.layout();
99 if (!par.getDepth()) {
100 FontInfo lf = layout.reslabelfont;
101 // In case the default family has been customized
102 if (layout.labelfont.family() == INHERIT_FAMILY)
103 lf.setFamily(buffer.params().getFont().fontInfo().family());
107 FontInfo font = layout.labelfont;
108 // Realize with the fonts of lesser depth.
109 font.realize(buffer.params().getFont().fontInfo());
115 void Text::setCharFont(pit_type pit,
116 pos_type pos, Font const & fnt, Font const & display_font)
118 Buffer const & buffer = owner_->buffer();
120 Layout const & layout = pars_[pit].layout();
122 // Get concrete layout font to reduce against
125 if (pos < pars_[pit].beginOfBody())
126 layoutfont = layout.labelfont;
128 layoutfont = layout.font;
130 // Realize against environment font information
131 if (pars_[pit].getDepth()) {
133 while (!layoutfont.resolved() &&
134 tp != pit_type(paragraphs().size()) &&
135 pars_[tp].getDepth()) {
137 if (tp != pit_type(paragraphs().size()))
138 layoutfont.realize(pars_[tp].layout().font);
142 // Inside inset, apply the inset's font attributes if any
145 layoutfont.realize(display_font.fontInfo());
147 layoutfont.realize(buffer.params().getFont().fontInfo());
149 // Now, reduce font against full layout font
150 font.fontInfo().reduce(layoutfont);
152 pars_[pit].setFont(pos, font);
156 void Text::setInsetFont(BufferView const & bv, pit_type pit,
157 pos_type pos, Font const & font)
159 Inset * const inset = pars_[pit].getInset(pos);
160 LASSERT(inset && inset->resetFontEdit(), /**/);
162 CursorSlice::idx_type endidx = inset->nargs();
163 for (CursorSlice cs(*inset); cs.idx() != endidx; ++cs.idx()) {
164 Text * text = cs.text();
166 // last position of the cell
167 CursorSlice cellend = cs;
168 cellend.pit() = cellend.lastpit();
169 cellend.pos() = cellend.lastpos();
170 text->setFont(bv, cs, cellend, font);
176 void Text::setLayout(pit_type start, pit_type end,
177 docstring const & layout)
179 LASSERT(start != end, /**/);
181 Buffer const & buffer = owner_->buffer();
182 BufferParams const & bp = buffer.params();
183 Layout const & lyxlayout = bp.documentClass()[layout];
185 for (pit_type pit = start; pit != end; ++pit) {
186 Paragraph & par = pars_[pit];
187 par.applyLayout(lyxlayout);
188 if (lyxlayout.margintype == MARGIN_MANUAL)
189 par.setLabelWidthString(par.expandLabel(lyxlayout, bp));
194 // set layout over selection and make a total rebreak of those paragraphs
195 void Text::setLayout(Cursor & cur, docstring const & layout)
197 LASSERT(this == cur.text(), /**/);
199 pit_type start = cur.selBegin().pit();
200 pit_type end = cur.selEnd().pit() + 1;
201 cur.recordUndoSelection();
202 setLayout(start, end, layout);
203 cur.forceBufferUpdate();
207 static bool changeDepthAllowed(Text::DEPTH_CHANGE type,
208 Paragraph const & par, int max_depth)
210 int const depth = par.params().depth();
211 if (type == Text::INC_DEPTH && depth < max_depth)
213 if (type == Text::DEC_DEPTH && depth > 0)
219 bool Text::changeDepthAllowed(Cursor & cur, DEPTH_CHANGE type) const
221 LASSERT(this == cur.text(), /**/);
222 // this happens when selecting several cells in tabular (bug 2630)
223 if (cur.selBegin().idx() != cur.selEnd().idx())
226 pit_type const beg = cur.selBegin().pit();
227 pit_type const end = cur.selEnd().pit() + 1;
228 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
230 for (pit_type pit = beg; pit != end; ++pit) {
231 if (lyx::changeDepthAllowed(type, pars_[pit], max_depth))
233 max_depth = pars_[pit].getMaxDepthAfter();
239 void Text::changeDepth(Cursor & cur, DEPTH_CHANGE type)
241 LASSERT(this == cur.text(), /**/);
242 pit_type const beg = cur.selBegin().pit();
243 pit_type const end = cur.selEnd().pit() + 1;
244 cur.recordUndoSelection();
245 int max_depth = (beg != 0 ? pars_[beg - 1].getMaxDepthAfter() : 0);
247 for (pit_type pit = beg; pit != end; ++pit) {
248 Paragraph & par = pars_[pit];
249 if (lyx::changeDepthAllowed(type, par, max_depth)) {
250 int const depth = par.params().depth();
251 if (type == INC_DEPTH)
252 par.params().depth(depth + 1);
254 par.params().depth(depth - 1);
256 max_depth = par.getMaxDepthAfter();
258 // this handles the counter labels, and also fixes up
259 // depth values for follow-on (child) paragraphs
260 cur.forceBufferUpdate();
264 void Text::setFont(Cursor & cur, Font const & font, bool toggleall)
266 LASSERT(this == cur.text(), return);
267 // Set the current_font
268 // Determine basis font
270 pit_type pit = cur.pit();
271 if (cur.pos() < pars_[pit].beginOfBody())
272 layoutfont = labelFont(pars_[pit]);
274 layoutfont = layoutFont(pit);
276 // Update current font
277 cur.real_current_font.update(font,
278 cur.buffer()->params().language,
281 // Reduce to implicit settings
282 cur.current_font = cur.real_current_font;
283 cur.current_font.fontInfo().reduce(layoutfont);
284 // And resolve it completely
285 cur.real_current_font.fontInfo().realize(layoutfont);
287 // if there is no selection that's all we need to do
288 if (!cur.selection())
291 // Ok, we have a selection.
292 cur.recordUndoSelection();
296 // Toggling behaves as follows: We check the first character of the
297 // selection. If it's (say) got EMPH on, then we set to off; if off,
298 // then to on. With families and the like, we set it to INHERIT, if
299 // we already have it.
300 CursorSlice const & sl = cur.selBegin();
301 Text const & text = *sl.text();
302 Paragraph const & par = text.getPar(sl.pit());
304 // get font at the position
305 Font oldfont = par.getFont(cur.bv().buffer().params(), sl.pos(),
306 text.outerFont(sl.pit()));
307 FontInfo const & oldfi = oldfont.fontInfo();
309 FontInfo & newfi = newfont.fontInfo();
311 FontFamily newfam = newfi.family();
312 if (newfam != INHERIT_FAMILY && newfam != IGNORE_FAMILY &&
313 newfam == oldfi.family())
314 newfi.setFamily(INHERIT_FAMILY);
316 FontSeries newser = newfi.series();
317 if (newser == BOLD_SERIES && oldfi.series() == BOLD_SERIES)
318 newfi.setSeries(INHERIT_SERIES);
320 FontShape newshp = newfi.shape();
321 if (newshp != INHERIT_SHAPE && newshp != IGNORE_SHAPE &&
322 newshp == oldfi.shape())
323 newfi.setShape(INHERIT_SHAPE);
325 ColorCode newcol = newfi.color();
326 if (newcol != Color_none && newcol != Color_inherit
327 && newcol != Color_ignore && newcol == oldfi.color())
328 newfi.setColor(Color_none);
331 if (newfi.emph() == FONT_TOGGLE)
332 newfi.setEmph(oldfi.emph() == FONT_OFF ? FONT_ON : FONT_OFF);
333 if (newfi.underbar() == FONT_TOGGLE)
334 newfi.setUnderbar(oldfi.underbar() == FONT_OFF ? FONT_ON : FONT_OFF);
335 if (newfi.strikeout() == FONT_TOGGLE)
336 newfi.setStrikeout(oldfi.strikeout() == FONT_OFF ? FONT_ON : FONT_OFF);
337 if (newfi.uuline() == FONT_TOGGLE)
338 newfi.setUuline(oldfi.uuline() == FONT_OFF ? FONT_ON : FONT_OFF);
339 if (newfi.uwave() == FONT_TOGGLE)
340 newfi.setUwave(oldfi.uwave() == FONT_OFF ? FONT_ON : FONT_OFF);
341 if (newfi.noun() == FONT_TOGGLE)
342 newfi.setNoun(oldfi.noun() == FONT_OFF ? FONT_ON : FONT_OFF);
343 if (newfi.number() == FONT_TOGGLE)
344 newfi.setNumber(oldfi.number() == FONT_OFF ? FONT_ON : FONT_OFF);
347 setFont(cur.bv(), cur.selectionBegin().top(),
348 cur.selectionEnd().top(), newfont);
352 void Text::setFont(BufferView const & bv, CursorSlice const & begin,
353 CursorSlice const & end, Font const & font)
355 Buffer const & buffer = bv.buffer();
357 // Don't use forwardChar here as ditend might have
358 // pos() == lastpos() and forwardChar would miss it.
359 // Can't use forwardPos either as this descends into
361 Language const * language = buffer.params().language;
362 for (CursorSlice dit = begin; dit != end; dit.forwardPos()) {
363 if (dit.pos() == dit.lastpos())
365 pit_type const pit = dit.pit();
366 pos_type const pos = dit.pos();
367 Inset * inset = pars_[pit].getInset(pos);
368 if (inset && inset->resetFontEdit()) {
369 // We need to propagate the font change to all
370 // text cells of the inset (bugs 1973, 6919).
371 setInsetFont(bv, pit, pos, font);
373 TextMetrics const & tm = bv.textMetrics(this);
374 Font f = tm.displayFont(pit, pos);
375 f.update(font, language);
376 setCharFont(pit, pos, f, tm.font_);
377 // font change may change language...
378 // spell checker has to know that
379 pars_[pit].requestSpellCheck(pos);
384 bool Text::cursorTop(Cursor & cur)
386 LASSERT(this == cur.text(), /**/);
387 return setCursor(cur, 0, 0);
391 bool Text::cursorBottom(Cursor & cur)
393 LASSERT(this == cur.text(), /**/);
394 return setCursor(cur, cur.lastpit(), boost::prior(paragraphs().end())->size());
398 void Text::toggleFree(Cursor & cur, Font const & font, bool toggleall)
400 LASSERT(this == cur.text(), /**/);
401 // If the mask is completely neutral, tell user
402 if (font.fontInfo() == ignore_font && font.language() == ignore_language) {
403 // Could only happen with user style
404 cur.message(_("No font change defined."));
408 // Try implicit word selection
409 // If there is a change in the language the implicit word selection
411 CursorSlice const resetCursor = cur.top();
412 bool const implicitSelection =
413 font.language() == ignore_language
414 && font.fontInfo().number() == FONT_IGNORE
415 && selectWordWhenUnderCursor(cur, WHOLE_WORD_STRICT);
418 setFont(cur, font, toggleall);
420 // Implicit selections are cleared afterwards
421 // and cursor is set to the original position.
422 if (implicitSelection) {
423 cur.clearSelection();
424 cur.top() = resetCursor;
430 docstring Text::getStringToIndex(Cursor const & cur)
432 LASSERT(this == cur.text(), /**/);
435 return cur.selectionAsString(false);
437 // Try implicit word selection. If there is a change
438 // in the language the implicit word selection is
441 selectWord(tmpcur, PREVIOUS_WORD);
443 if (!tmpcur.selection())
444 cur.message(_("Nothing to index!"));
445 else if (tmpcur.selBegin().pit() != tmpcur.selEnd().pit())
446 cur.message(_("Cannot index more than one paragraph!"));
448 return tmpcur.selectionAsString(false);
454 void Text::setLabelWidthStringToSequence(Cursor const & cur,
458 // Find first of same layout in sequence
459 while (!isFirstInSequence(c.pit())) {
460 c.pit() = depthHook(c.pit(), c.paragraph().getDepth());
463 // now apply label width string to every par
465 depth_type const depth = c.paragraph().getDepth();
466 Layout const & layout = c.paragraph().layout();
467 for ( ; c.pit() <= c.lastpit() ; ++c.pit()) {
468 while (c.paragraph().getDepth() > depth) {
470 if (c.pit() > c.lastpit())
473 if (c.paragraph().getDepth() < depth)
475 if (c.paragraph().layout() != layout)
478 c.paragraph().setLabelWidthString(s);
483 void Text::setParagraphs(Cursor & cur, docstring arg, bool merge)
485 LASSERT(cur.text(), /**/);
488 string const argument = to_utf8(arg);
489 depth_type priordepth = -1;
492 c.setCursor(cur.selectionBegin());
493 for ( ; c <= cur.selectionEnd() ; ++c.pit()) {
494 Paragraph & par = c.paragraph();
495 ParagraphParameters params = par.params();
496 params.read(argument, merge);
497 // Changes to label width string apply to all paragraphs
498 // with same layout in a sequence.
499 // Do this only once for a selected range of paragraphs
500 // of the same layout and depth.
502 par.params().apply(params, par.layout());
503 if (par.getDepth() != priordepth || par.layout() != priorlayout)
504 setLabelWidthStringToSequence(c, params.labelWidthString());
505 priordepth = par.getDepth();
506 priorlayout = par.layout();
511 //FIXME This is a little redundant now, but it's probably worth keeping,
512 //especially if we're going to go away from using serialization internally
514 void Text::setParagraphs(Cursor & cur, ParagraphParameters const & p)
516 LASSERT(cur.text(), /**/);
518 depth_type priordepth = -1;
521 c.setCursor(cur.selectionBegin());
522 for ( ; c < cur.selectionEnd() ; ++c.pit()) {
523 Paragraph & par = c.paragraph();
524 // Changes to label width string apply to all paragraphs
525 // with same layout in a sequence.
526 // Do this only once for a selected range of paragraphs
527 // of the same layout and depth.
529 par.params().apply(p, par.layout());
530 if (par.getDepth() != priordepth || par.layout() != priorlayout)
531 setLabelWidthStringToSequence(c,
532 par.params().labelWidthString());
533 priordepth = par.getDepth();
534 priorlayout = par.layout();
539 // this really should just insert the inset and not move the cursor.
540 void Text::insertInset(Cursor & cur, Inset * inset)
542 LASSERT(this == cur.text(), /**/);
543 LASSERT(inset, /**/);
544 cur.paragraph().insertInset(cur.pos(), inset, cur.current_font,
545 Change(cur.buffer()->params().trackChanges
546 ? Change::INSERTED : Change::UNCHANGED));
550 bool Text::setCursor(Cursor & cur, pit_type par, pos_type pos,
551 bool setfont, bool boundary)
553 TextMetrics const & tm = cur.bv().textMetrics(this);
554 bool const update_needed = !tm.contains(par);
556 setCursorIntern(cur, par, pos, setfont, boundary);
557 // FIXME There is a chance that we'll miss a screen update here.
558 // If so, then do DEPM and then check if cur wants an update and
559 // go ahead and do it, if so.
560 return cur.bv().checkDepm(cur, old) || update_needed;
564 void Text::setCursor(CursorSlice & cur, pit_type par, pos_type pos)
566 LASSERT(par != int(paragraphs().size()), /**/);
570 // now some strict checking
571 Paragraph & para = getPar(par);
573 // None of these should happen, but we're scaredy-cats
575 lyxerr << "don't like -1" << endl;
576 LASSERT(false, /**/);
579 if (pos > para.size()) {
580 lyxerr << "don't like 1, pos: " << pos
581 << " size: " << para.size()
582 << " par: " << par << endl;
583 LASSERT(false, /**/);
588 void Text::setCursorIntern(Cursor & cur,
589 pit_type par, pos_type pos, bool setfont, bool boundary)
591 LASSERT(this == cur.text(), /**/);
592 cur.boundary(boundary);
593 setCursor(cur.top(), par, pos);
595 cur.setCurrentFont();
599 bool Text::checkAndActivateInset(Cursor & cur, bool front)
603 if (front && cur.pos() == cur.lastpos())
605 if (!front && cur.pos() == 0)
607 Inset * inset = front ? cur.nextInset() : cur.prevInset();
608 if (!inset || !inset->editable())
611 * Apparently, when entering an inset we are expected to be positioned
612 * *before* it in the containing paragraph, regardless of the direction
613 * from which we are entering. Otherwise, cursor placement goes awry,
614 * and when we exit from the beginning, we'll be placed *after* the
619 inset->edit(cur, front);
624 bool Text::checkAndActivateInsetVisual(Cursor & cur, bool movingForward, bool movingLeft)
630 if (cur.pos() == cur.lastpos())
632 Paragraph & par = cur.paragraph();
633 Inset * inset = par.isInset(cur.pos()) ? par.getInset(cur.pos()) : 0;
634 if (!inset || !inset->editable())
636 inset->edit(cur, movingForward,
637 movingLeft ? Inset::ENTRY_DIRECTION_RIGHT : Inset::ENTRY_DIRECTION_LEFT);
642 bool Text::cursorBackward(Cursor & cur)
644 // Tell BufferView to test for FitCursor in any case!
645 cur.screenUpdateFlags(Update::FitCursor);
647 // not at paragraph start?
649 // if on right side of boundary (i.e. not at paragraph end, but line end)
650 // -> skip it, i.e. set boundary to true, i.e. go only logically left
651 // there are some exceptions to ignore this: lineseps, newlines, spaces
653 // some effectless debug code to see the values in the debugger
654 bool bound = cur.boundary();
655 int rowpos = cur.textRow().pos();
657 bool sep = cur.paragraph().isSeparator(cur.pos() - 1);
658 bool newline = cur.paragraph().isNewline(cur.pos() - 1);
659 bool linesep = cur.paragraph().isLineSeparator(cur.pos() - 1);
661 if (!cur.boundary() &&
662 cur.textRow().pos() == cur.pos() &&
663 !cur.paragraph().isLineSeparator(cur.pos() - 1) &&
664 !cur.paragraph().isNewline(cur.pos() - 1) &&
665 !cur.paragraph().isSeparator(cur.pos() - 1)) {
666 return setCursor(cur, cur.pit(), cur.pos(), true, true);
669 // go left and try to enter inset
670 if (checkAndActivateInset(cur, false))
673 // normal character left
674 return setCursor(cur, cur.pit(), cur.pos() - 1, true, false);
677 // move to the previous paragraph or do nothing
679 return setCursor(cur, cur.pit() - 1, getPar(cur.pit() - 1).size(), true, false);
684 bool Text::cursorVisLeft(Cursor & cur, bool skip_inset)
686 Cursor temp_cur = cur;
687 temp_cur.posVisLeft(skip_inset);
688 if (temp_cur.depth() > cur.depth()) {
692 return setCursor(cur, temp_cur.pit(), temp_cur.pos(),
693 true, temp_cur.boundary());
697 bool Text::cursorVisRight(Cursor & cur, bool skip_inset)
699 Cursor temp_cur = cur;
700 temp_cur.posVisRight(skip_inset);
701 if (temp_cur.depth() > cur.depth()) {
705 return setCursor(cur, temp_cur.pit(), temp_cur.pos(),
706 true, temp_cur.boundary());
710 bool Text::cursorForward(Cursor & cur)
712 // Tell BufferView to test for FitCursor in any case!
713 cur.screenUpdateFlags(Update::FitCursor);
715 // not at paragraph end?
716 if (cur.pos() != cur.lastpos()) {
717 // in front of editable inset, i.e. jump into it?
718 if (checkAndActivateInset(cur, true))
721 TextMetrics const & tm = cur.bv().textMetrics(this);
722 // if left of boundary -> just jump to right side
723 // but for RTL boundaries don't, because: abc|DDEEFFghi -> abcDDEEF|Fghi
724 if (cur.boundary() && !tm.isRTLBoundary(cur.pit(), cur.pos()))
725 return setCursor(cur, cur.pit(), cur.pos(), true, false);
727 // next position is left of boundary,
728 // but go to next line for special cases like space, newline, linesep
730 // some effectless debug code to see the values in the debugger
731 int endpos = cur.textRow().endpos();
732 int lastpos = cur.lastpos();
734 bool linesep = cur.paragraph().isLineSeparator(cur.pos());
735 bool newline = cur.paragraph().isNewline(cur.pos());
736 bool sep = cur.paragraph().isSeparator(cur.pos());
737 if (cur.pos() != cur.lastpos()) {
738 bool linesep2 = cur.paragraph().isLineSeparator(cur.pos()+1);
739 bool newline2 = cur.paragraph().isNewline(cur.pos()+1);
740 bool sep2 = cur.paragraph().isSeparator(cur.pos()+1);
743 if (cur.textRow().endpos() == cur.pos() + 1 &&
744 cur.textRow().endpos() != cur.lastpos() &&
745 !cur.paragraph().isNewline(cur.pos()) &&
746 !cur.paragraph().isLineSeparator(cur.pos()) &&
747 !cur.paragraph().isSeparator(cur.pos())) {
748 return setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
751 // in front of RTL boundary? Stay on this side of the boundary because:
752 // ab|cDDEEFFghi -> abc|DDEEFFghi
753 if (tm.isRTLBoundary(cur.pit(), cur.pos() + 1))
754 return setCursor(cur, cur.pit(), cur.pos() + 1, true, true);
757 return setCursor(cur, cur.pit(), cur.pos() + 1, true, false);
760 // move to next paragraph
761 if (cur.pit() != cur.lastpit())
762 return setCursor(cur, cur.pit() + 1, 0, true, false);
767 bool Text::cursorUpParagraph(Cursor & cur)
769 bool updated = false;
771 updated = setCursor(cur, cur.pit(), 0);
772 else if (cur.pit() != 0)
773 updated = setCursor(cur, cur.pit() - 1, 0);
778 bool Text::cursorDownParagraph(Cursor & cur)
780 bool updated = false;
781 if (cur.pit() != cur.lastpit())
782 updated = setCursor(cur, cur.pit() + 1, 0);
784 updated = setCursor(cur, cur.pit(), cur.lastpos());
789 // fix the cursor `cur' after a characters has been deleted at `where'
790 // position. Called by deleteEmptyParagraphMechanism
791 void Text::fixCursorAfterDelete(CursorSlice & cur, CursorSlice const & where)
793 // Do nothing if cursor is not in the paragraph where the
795 if (cur.pit() != where.pit())
798 // If cursor position is after the deletion place update it
799 if (cur.pos() > where.pos())
802 // Check also if we don't want to set the cursor on a spot behind the
803 // pagragraph because we erased the last character.
804 if (cur.pos() > cur.lastpos())
805 cur.pos() = cur.lastpos();
809 bool Text::deleteEmptyParagraphMechanism(Cursor & cur,
810 Cursor & old, bool & need_anchor_change)
812 //LYXERR(Debug::DEBUG, "DEPM: cur:\n" << cur << "old:\n" << old);
814 Paragraph & oldpar = old.paragraph();
816 // We allow all kinds of "mumbo-jumbo" when freespacing.
817 if (oldpar.isFreeSpacing())
820 /* Ok I'll put some comments here about what is missing.
821 There are still some small problems that can lead to
822 double spaces stored in the document file or space at
823 the beginning of paragraphs(). This happens if you have
824 the cursor between to spaces and then save. Or if you
825 cut and paste and the selection have a space at the
826 beginning and then save right after the paste. (Lgb)
829 // If old.pos() == 0 and old.pos()(1) == LineSeparator
830 // delete the LineSeparator.
833 // If old.pos() == 1 and old.pos()(0) == LineSeparator
834 // delete the LineSeparator.
837 // Find a common inset and the corresponding depth.
839 for (; depth < cur.depth(); ++depth)
840 if (&old.inset() == &cur[depth].inset())
843 // Whether a common inset is found and whether the cursor is still in
844 // the same paragraph (possibly nested).
845 bool const same_par = depth < cur.depth() && old.pit() == cur[depth].pit();
846 bool const same_par_pos = depth == cur.depth() - 1 && same_par
847 && old.pos() == cur[depth].pos();
849 // If the chars around the old cursor were spaces, delete one of them.
851 // Only if the cursor has really moved.
853 && old.pos() < oldpar.size()
854 && oldpar.isLineSeparator(old.pos())
855 && oldpar.isLineSeparator(old.pos() - 1)
856 && !oldpar.isDeleted(old.pos() - 1)
857 && !oldpar.isDeleted(old.pos())) {
858 oldpar.eraseChar(old.pos() - 1, cur.buffer()->params().trackChanges);
859 // FIXME: This will not work anymore when we have multiple views of the same buffer
860 // In this case, we will have to correct also the cursors held by
861 // other bufferviews. It will probably be easier to do that in a more
862 // automated way in CursorSlice code. (JMarc 26/09/2001)
863 // correct all cursor parts
865 fixCursorAfterDelete(cur[depth], old.top());
866 need_anchor_change = true;
872 // only do our magic if we changed paragraph
876 // don't delete anything if this is the ONLY paragraph!
877 if (old.lastpit() == 0)
880 // Do not delete empty paragraphs with keepempty set.
881 if (oldpar.allowEmpty())
884 if (oldpar.empty() || (oldpar.size() == 1 && oldpar.isLineSeparator(0))) {
886 old.recordUndo(ATOMIC_UNDO,
887 max(old.pit() - 1, pit_type(0)),
888 min(old.pit() + 1, old.lastpit()));
889 ParagraphList & plist = old.text()->paragraphs();
890 bool const soa = oldpar.params().startOfAppendix();
891 plist.erase(boost::next(plist.begin(), old.pit()));
892 // do not lose start of appendix marker (bug 4212)
893 if (soa && old.pit() < pit_type(plist.size()))
894 plist[old.pit()].params().startOfAppendix(true);
896 // see #warning (FIXME?) above
897 if (cur.depth() >= old.depth()) {
898 CursorSlice & curslice = cur[old.depth() - 1];
899 if (&curslice.inset() == &old.inset()
900 && curslice.pit() > old.pit()) {
902 // since a paragraph has been deleted, all the
903 // insets after `old' have been copied and
904 // their address has changed. Therefore we
905 // need to `regenerate' cur. (JMarc)
906 cur.updateInsets(&(cur.bottom().inset()));
907 need_anchor_change = true;
913 if (oldpar.stripLeadingSpaces(cur.buffer()->params().trackChanges)) {
914 need_anchor_change = true;
915 // We return true here because the Paragraph contents changed and
916 // we need a redraw before further action is processed.
924 void Text::deleteEmptyParagraphMechanism(pit_type first, pit_type last, bool trackChanges)
926 LASSERT(first >= 0 && first <= last && last < (int) pars_.size(), /**/);
928 for (pit_type pit = first; pit <= last; ++pit) {
929 Paragraph & par = pars_[pit];
931 // We allow all kinds of "mumbo-jumbo" when freespacing.
932 if (par.isFreeSpacing())
935 for (pos_type pos = 1; pos < par.size(); ++pos) {
936 if (par.isLineSeparator(pos) && par.isLineSeparator(pos - 1)
937 && !par.isDeleted(pos - 1)) {
938 if (par.eraseChar(pos - 1, trackChanges)) {
944 // don't delete anything if this is the only remaining paragraph
945 // within the given range. Note: Text::acceptOrRejectChanges()
946 // sets the cursor to 'first' after calling DEPM
950 // don't delete empty paragraphs with keepempty set
951 if (par.allowEmpty())
954 if (par.empty() || (par.size() == 1 && par.isLineSeparator(0))) {
955 pars_.erase(boost::next(pars_.begin(), pit));
961 par.stripLeadingSpaces(trackChanges);
966 void Text::recUndo(Cursor & cur, pit_type first, pit_type last) const
968 cur.recordUndo(ATOMIC_UNDO, first, last);
972 void Text::recUndo(Cursor & cur, pit_type par) const
974 cur.recordUndo(ATOMIC_UNDO, par, par);