X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fpbd%2Fpbd%2Fstateful.h;h=36c6fe28c7184cac9633cf7c9efb564716816834;hb=7a6e86c9f9bef8db74b755db659794c4a859f36d;hp=78b9eb7b3b4057e897cfb9d743ef156ba399285f;hpb=db8b575c30845bafc34b87bacd52129c95d1c478;p=ardour.git

diff --git a/libs/pbd/pbd/stateful.h b/libs/pbd/pbd/stateful.h
index 78b9eb7b3b..36c6fe28c7 100644
--- a/libs/pbd/pbd/stateful.h
+++ b/libs/pbd/pbd/stateful.h
@@ -48,12 +48,10 @@ class Stateful {
 
 	virtual XMLNode& get_state (void) = 0;
 	virtual int set_state (const XMLNode&, int version) = 0;
-	/* derived types do not have to implement this, but probably should
-	   give it serious attention.
-	*/
-	virtual bool set_property (const PropertyBase&) { return false; }
 
-	PropertyChange set_properties (const PropertyList&);
+	virtual bool apply_changes (PropertyBase const &);
+	PropertyChange apply_changes (PropertyList const &);
+	
         const OwnedPropertyList& properties() const { return *_properties; }
 
 	void add_property (PropertyBase& s);
@@ -63,17 +61,25 @@ class Stateful {
 	 */
 
 	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 ();
-        void diff (PropertyList&, PropertyList&) 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 PropertyList* property_factory(const XMLNode&) const { return 0; }
+        virtual PropertyList* property_factory (const XMLNode&) const;
 
 	/* How stateful's notify of changes to their properties
 	 */
@@ -82,28 +88,42 @@ class Stateful {
 	static int current_state_version;
 	static int loading_state_version;
 
+	virtual void suspend_property_changes ();
+	virtual void resume_property_changes ();
+
+        bool property_changes_suspended() const { return g_atomic_int_get (&_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 &);
-	/* derived types can call this from ::set_state() (or elsewhere)
-	   to get basic property setting done.
-	*/
-	PropertyChange set_properties (XMLNode const &);
+
+	PropertyChange set_values (XMLNode const &);
 	
 	/* derived classes can implement this to do cross-checking
 	   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;
+	PBD::PropertyChange     _pending_changed;
+        Glib::Mutex _lock;
 
 	std::string _xml_node_name; ///< name of node to use for this object in XML
 	OwnedPropertyList* _properties;
+
+        virtual void send_change (const PropertyChange&);
+        /** derived classes can implement this in order to process a property change
+            within thaw() just before send_change() is called.
+        */
+        virtual void mid_thaw (const PropertyChange&) { }
+
+  private:
+	PBD::ID  _id;
+        int32_t  _stateful_frozen;
 };
 
 } // namespace PBD