-/// A limited Stack for the undo informations.
-class UndoStack{
-private:
- ///
- typedef std::list<Undo*> Stakk;
- ///
- Stakk stakk;
- /// the maximum number of undo steps stored.
- Stakk::size_type limit;
-public:
- ///
- UndoStack();
- ///
- Undo * pop();
- ///
- Undo * top();
- ///
- bool empty() const;
- ///
- ~UndoStack();
- ///
- void clear();
- ///
- void SetStackLimit(Stakk::size_type l);
- ///
- void push(Undo * undo_arg);
-};
+/// this will undo the last action - returns false if no undo possible
+bool textUndo(BufferView & bv);
+
+/// this will redo the last undo - returns false if no redo possible
+bool textRedo(BufferView & bv);
+
+/// makes sure the next operation will be stored
+void finishUndo();
+
+
+/**
+ * Record undo information - call with the current cursor and the 'other
+ * end' of the range of changed paragraphs. So we give an inclusive range.
+ * This is called before you make the changes to the paragraph, and it
+ * will record the original information of the paragraphs in the undo stack.
+ *
+ * FIXME: We need something to record undo in partial grids for mathed.
+ * Right now we use recordUndoInset if more than one cell is changed,
+ * but that puts the cursor in front of the inset after undo. We would need
+ * something like
+ * recordUndoGrid(LCursor & cur, Undo::undo_kind kind, idx_type from, idx_type to);
+ * and store the cell information in class Undo.
+ */
+
+/// The general case: prepare undo for an arbitrary range.
+void recordUndo(LCursor & cur, Undo::undo_kind kind,
+ pit_type from, pit_type to);
+
+/// Convenience: prepare undo for the range between 'from' and cursor.
+void recordUndo(LCursor & cur, Undo::undo_kind kind, pit_type from);
+
+/// Convenience: prepare undo for the single paragraph or cell
+/// containing the cursor
+void recordUndo(LCursor & cur, Undo::undo_kind kind = Undo::ATOMIC);
+/// Convenience: prepare undo for the inset containing the cursor
+void recordUndoInset(LCursor & cur, Undo::undo_kind kind = Undo::ATOMIC);
+/// Convenience: prepare undo for the selected paragraphs
+void recordUndoSelection(LCursor & cur, Undo::undo_kind kind = Undo::ATOMIC);
+
+/// Convenience: prepare undo for the whole buffer
+void recordUndoFullDocument(BufferView * bv);
+
+
+} // namespace lyx