X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;ds=sidebyside;f=libs%2Fpbd%2Fpbd%2Fcontrollable.h;h=9fa374ebc66c842b126c04d28b3c55a5467ba3ae;hb=d6ce0641a79607bdf5e648d541dbb4238d3d99e3;hp=ff8f8a9b52004a1b8342bdf67fed3d526a28da19;hpb=fedf3d34f32264ac57c6a222b678dc90f2bb1a88;p=ardour.git

diff --git a/libs/pbd/pbd/controllable.h b/libs/pbd/pbd/controllable.h
index ff8f8a9b52..9fa374ebc6 100644
--- a/libs/pbd/pbd/controllable.h
+++ b/libs/pbd/pbd/controllable.h
@@ -1,35 +1,54 @@
+/*
+    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 (std::string name);
-	virtual ~Controllable() { GoingAway (this); }
+	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*> 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;
 
+	static sigc::signal<void,Controllable*> Destroyed;
+
 	sigc::signal<void> Changed;
 
 	int set_state (const XMLNode&);
@@ -37,8 +56,32 @@ class Controllable : public virtual sigc::trackable, public Stateful {
 
 	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;
+};
+
+/* 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; }
 };
 
 }