along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: stateful.h 17 2005-09-24 19:13:41Z taybin $
*/
#ifndef __pbd_stateful_h__
#define __pbd_stateful_h__
#include <string>
-#include <pbd/id.h>
+#include "pbd/id.h"
class XMLNode;
+namespace PBD {
+
+namespace sys {
+ class path;
+}
+
class Stateful {
public:
Stateful();
virtual XMLNode& get_state (void) = 0;
- virtual int set_state (const XMLNode&) = 0;
+ virtual int set_state (const XMLNode&, int version) = 0;
/* Extra XML nodes */
void add_extra_xml (XMLNode&);
XMLNode *extra_xml (const std::string& str);
- virtual void add_instant_xml (XMLNode&, const std::string& dir);
- XMLNode *instant_xml (const std::string& str, const std::string& dir);
- PBD::ID id() { return _id; }
+ const PBD::ID& id() const { return _id; }
+
+ static int current_state_version;
+ static int loading_state_version;
protected:
+
+ void add_instant_xml (XMLNode&, const sys::path& directory_path);
+ XMLNode *instant_xml (const std::string& str, const sys::path& directory_path);
+
XMLNode *_extra_xml;
XMLNode *_instant_xml;
- PBD::ID _id;
+ PBD::ID _id;
};
+} // namespace PBD
+
#endif /* __pbd_stateful_h__ */