+/*
+ Copyright (C) 2000-2007 Paul Davis
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
#ifndef __pbd_controllable_h__
#define __pbd_controllable_h__
+#include <string>
+#include <set>
+
#include <sigc++/trackable.h>
#include <sigc++/signal.h>
-#include <pbd/stateful.h>
-#include <pbd/id.h>
+#include "pbd/statefuldestructible.h"
class XMLNode;
namespace PBD {
-class Controllable : public virtual sigc::trackable, public Stateful {
+class Controllable : public PBD::StatefulDestructible {
public:
- Controllable ();
- virtual ~Controllable() { GoingAway (this); }
+ 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<void,Controllable*> Created;
- static sigc::signal<void,Controllable*> GoingAway;
-
+ static sigc::signal<void,PBD::Controllable*,int,int> CreateBinding;
+ static sigc::signal<void,PBD::Controllable*> DeleteBinding;
static sigc::signal<bool,PBD::Controllable*> StartLearning;
static sigc::signal<void,PBD::Controllable*> StopLearning;
- sigc::signal<void> Changed;
+ static sigc::signal<void,Controllable*> Destroyed;
- const PBD::ID& id() const { return _id; }
+ sigc::signal<void> Changed;
- int set_state (const XMLNode&) { return 0; }
+ int set_state (const XMLNode&, int version = 3000);
XMLNode& get_state ();
+ std::string name() const { return _name; }
+ bool touching () const { return _touching; }
+
+ void set_touching (bool yn) { _touching = yn; }
+
+ static Controllable* by_id (const PBD::ID&);
+ static Controllable* by_name (const std::string&);
+
private:
- PBD::ID _id;
+ std::string _name;
+ bool _touching;
+
+ void add ();
+ void remove ();
+
+ typedef std::set<PBD::Controllable*> Controllables;
+ static Glib::Mutex* registry_lock;
+ static Controllables registry;
+};
+
+/* a utility class for the occasions when you need but do not have
+ a Controllable
+*/
+
+class IgnorableControllable : public Controllable
+{
+ public:
+ IgnorableControllable () : PBD::Controllable ("ignoreMe") {}
+ ~IgnorableControllable () {}
+
+ void set_value (float /*v*/) {}
+ float get_value () const { return 0.0; }
};
}