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#ifndef __pbd_controllable_h__
#define __pbd_controllable_h__
#include <string>
#include <set>
#include <sigc++/trackable.h>
#include <sigc++/signal.h>
#include <pbd/statefuldestructible.h>
class XMLNode;
namespace PBD {
class Controllable : public PBD::StatefulDestructible {
public:
Controllable (std::string name);
virtual ~Controllable() { Destroyed (this); }
virtual void set_value (float) = 0;
virtual float get_value (void) const = 0;
virtual bool can_send_feedback() const { return true; }
sigc::signal<void> LearningFinished;
static sigc::signal<bool,PBD::Controllable*> StartLearning;
static sigc::signal<void,PBD::Controllable*> StopLearning;
static sigc::signal<void,Controllable*> Destroyed;
sigc::signal<void> Changed;
int set_state (const XMLNode&);
XMLNode& get_state ();
std::string name() const { return _name; }
static Controllable* by_id (const PBD::ID&);
static Controllable* by_name (const std::string&);
private:
std::string _name;
void add ();
void remove ();
typedef std::set<PBD::Controllable*> Controllables;
static Glib::Mutex* registry_lock;
static Controllables registry;
};
}
#endif /* __pbd_controllable_h__ */
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