+Text::Text(InsetText * owner, bool use_default_layout)
+ : owner_(owner), autoBreakRows_(false), undo_counter_(0)
+{
+ pars_.push_back(Paragraph());
+ Paragraph & par = pars_.back();
+ par.setInsetOwner(owner);
+ DocumentClass const & dc = owner->buffer().params().documentClass();
+ if (use_default_layout)
+ par.setDefaultLayout(dc);
+ else
+ par.setPlainLayout(dc);
+}
+
+
+Text::Text(InsetText * owner, Text const & text)
+ : owner_(owner), autoBreakRows_(text.autoBreakRows_), undo_counter_(0)
+{
+ pars_ = text.pars_;
+ ParagraphList::iterator const end = pars_.end();
+ ParagraphList::iterator it = pars_.begin();
+ for (; it != end; ++it)
+ it->setInsetOwner(owner);
+}
+
+
+pit_type Text::depthHook(pit_type pit, depth_type depth) const
+{
+ pit_type newpit = pit;
+
+ if (newpit != 0)
+ --newpit;
+
+ while (newpit != 0 && pars_[newpit].getDepth() > depth)
+ --newpit;
+
+ if (pars_[newpit].getDepth() > depth)
+ return pit;
+
+ return newpit;
+}
+
+
+pit_type Text::outerHook(pit_type par_offset) const
+{
+ Paragraph const & par = pars_[par_offset];
+
+ if (par.getDepth() == 0)
+ return pars_.size();
+ return depthHook(par_offset, depth_type(par.getDepth() - 1));
+}
+
+
+bool Text::isFirstInSequence(pit_type par_offset) const
+{
+ Paragraph const & par = pars_[par_offset];
+
+ pit_type dhook_offset = depthHook(par_offset, par.getDepth());
+
+ if (dhook_offset == par_offset)
+ return true;
+
+ Paragraph const & dhook = pars_[dhook_offset];
+
+ return dhook.layout() != par.layout()
+ || dhook.getDepth() != par.getDepth();
+}
+
+
+Font const Text::outerFont(pit_type par_offset) const
+{
+ depth_type par_depth = pars_[par_offset].getDepth();
+ FontInfo tmpfont = inherit_font;
+
+ // Resolve against environment font information
+ while (par_offset != pit_type(pars_.size())
+ && par_depth
+ && !tmpfont.resolved()) {
+ par_offset = outerHook(par_offset);
+ if (par_offset != pit_type(pars_.size())) {
+ tmpfont.realize(pars_[par_offset].layout().font);
+ par_depth = pars_[par_offset].getDepth();
+ }
+ }
+
+ return Font(tmpfont);
+}
+
+
+void acceptChanges(ParagraphList & pars, BufferParams const & bparams)
+{
+ pit_type pars_size = static_cast<pit_type>(pars.size());
+
+ // first, accept changes within each individual paragraph
+ // (do not consider end-of-par)
+ for (pit_type pit = 0; pit < pars_size; ++pit) {
+ if (!pars[pit].empty()) // prevent assertion failure
+ pars[pit].acceptChanges(0, pars[pit].size());
+ }
+
+ // next, accept imaginary end-of-par characters
+ for (pit_type pit = 0; pit < pars_size; ++pit) {
+ pos_type pos = pars[pit].size();
+
+ if (pars[pit].isInserted(pos)) {
+ pars[pit].setChange(pos, Change(Change::UNCHANGED));
+ } else if (pars[pit].isDeleted(pos)) {
+ if (pit == pars_size - 1) {
+ // we cannot remove a par break at the end of the last
+ // paragraph; instead, we mark it unchanged
+ pars[pit].setChange(pos, Change(Change::UNCHANGED));
+ } else {
+ mergeParagraph(bparams, pars, pit);
+ --pit;
+ --pars_size;
+ }
+ }
+ }
+}
+
+InsetText const & Text::inset() const
+{
+ return *owner_;
+}
+
+
+void Text::readParToken(Paragraph & par, Lexer & lex,