-Undo::Undo(undo_kind kind_arg,
- int number_before_arg, int number_behind_arg,
- int cursor_par_arg, int cursor_pos_arg,
- LyXParagraph * par_arg)
-{
- kind = kind_arg;
- number_of_before_par = number_before_arg;
- number_of_behind_par = number_behind_arg;
- number_of_cursor_par = cursor_par_arg;
- cursor_pos = cursor_pos_arg;
- par = par_arg;
-}
-
-
-Undo::~Undo()
-{
- LyXParagraph * tmppar;
- while (par) {
- tmppar = par;
- par = par->next();
- delete tmppar;
- }
-}
-
-
-UndoStack::UndoStack()
- : limit(100) {}
-
-
-Undo * UndoStack::pop()
-{
- if (stakk.empty()) return 0;
- Undo * result = stakk.front();
- stakk.pop_front();
- return result;
-}
-
-
-Undo * UndoStack::top()
-{
- if (stakk.empty()) return 0;
- return stakk.front();
-}
-
-
-UndoStack::~UndoStack()
-{
- clear();
-}
-
-
-void UndoStack::clear()
-{
- while (!stakk.empty()) {
- Undo * tmp = stakk.front();
- stakk.pop_front();
- delete tmp;
- }
-}
-
-
-void UndoStack::SetStackLimit(Stakk::size_type l)
-{
- limit = l;
-}
-
-
-void UndoStack::push(Undo * undo_arg)
-{
- if (!undo_arg) return;
-
- stakk.push_front(undo_arg);
- if (stakk.size() > limit) {
- Undo * tmp = stakk.back();
- stakk.pop_back();
- delete tmp;
- }
-}
-
-
-bool UndoStack::empty() const {
- return stakk.empty();
-}