+ // Since setDocumentClass() causes deletion of the old document class
+ // we need to reset all layout pointers in paragraphs (otherwise they
+ // would be dangling).
+ ParIterator const end = buffer->par_iterator_end();
+ for (ParIterator it = buffer->par_iterator_begin(); it != end; ++it) {
+ docstring const name = it->layout().name();
+ if (docclass->hasLayout(name))
+ it->setLayout((*docclass)[name]);
+ else
+ it->setPlainOrDefaultLayout(*docclass);
+ }