#include <list>
#include <cassert>
+#include "pbd/libpbd_visibility.h"
#include "pbd/id.h"
#include "pbd/xml++.h"
#include "pbd/property_basics.h"
class OwnedPropertyList;
/** Base class for objects with saveable and undoable state */
-class Stateful {
+class LIBPBD_API Stateful {
public:
Stateful ();
virtual ~Stateful();
virtual XMLNode& get_state (void) = 0;
virtual int set_state (const XMLNode&, int version) = 0;
- virtual bool apply_change (PropertyBase const &);
+ virtual bool apply_changes (PropertyBase const &);
PropertyChange apply_changes (PropertyList const &);
const OwnedPropertyList& properties() const { return *_properties; }
*/
void add_extra_xml (XMLNode&);
- XMLNode *extra_xml (const std::string& str);
+ XMLNode *extra_xml (const std::string& str, bool add_if_missing = false);
+ void save_extra_xml (const XMLNode&);
const PBD::ID& id() const { return _id; }
+ bool set_id (const XMLNode&);
+ void set_id (const std::string&);
+ void reset_id ();
/* history management */
- void clear_history ();
- virtual void clear_owned_history ();
- void diff (PropertyList&, PropertyList&, Command*) const;
- virtual void rdiff (std::vector<StatefulDiffCommand*> &) const;
+ void clear_changes ();
+ virtual void clear_owned_changes ();
+ PropertyList* get_changes_as_properties (Command *) const;
+ virtual void rdiff (std::vector<Command*> &) const;
bool changed() const;
/* create a property list from an XMLNode
virtual void suspend_property_changes ();
virtual void resume_property_changes ();
- void unlock_property_changes () { _no_property_changes = false; }
- void block_property_changes () { _no_property_changes = true; }
-
+ bool property_changes_suspended() const { return g_atomic_int_get (const_cast<gint*>(&_stateful_frozen)) > 0; }
+
protected:
- void add_instant_xml (XMLNode&, const sys::path& directory_path);
- XMLNode *instant_xml (const std::string& str, const sys::path& directory_path);
+ void add_instant_xml (XMLNode&, const std::string& directory_path);
+ XMLNode *instant_xml (const std::string& str, const std::string& directory_path);
void add_properties (XMLNode &);
PropertyChange set_values (XMLNode const &);
of property values after either a PropertyList or XML
driven property change.
*/
- virtual void post_set () { };
+ virtual void post_set (const PropertyChange&) { };
XMLNode *_extra_xml;
XMLNode *_instant_xml;
- PBD::ID _id;
- int32_t _frozen;
- bool _no_property_changes;
PBD::PropertyChange _pending_changed;
- Glib::Mutex _lock;
+ Glib::Threads::Mutex _lock;
std::string _xml_node_name; ///< name of node to use for this object in XML
OwnedPropertyList* _properties;
within thaw() just before send_change() is called.
*/
virtual void mid_thaw (const PropertyChange&) { }
- bool property_changes_suspended() const { return g_atomic_int_get (&_frozen) > 0; }
+
+ private:
+ PBD::ID _id;
+ gint _stateful_frozen;
};
} // namespace PBD