use new ControlList::add() argument

[ardour.git] / libs / pbd / pbd / command.h

diff --git a/libs/pbd/pbd/command.h b/libs/pbd/pbd/command.h
index 23bcf85b91cee4c6e46acd481b5b7f2115afc817..4547b779fb4e736300305017012e6246dfa66ba9 100644 (file)
--- a/libs/pbd/pbd/command.h
+++ b/libs/pbd/pbd/command.h
@@ -1,5 +1,7 @@
+
 /* 
-   Copyright (C) 2006 Hans Fugal & Paul Davis
+    Copyright (C) 2006 Paul Davis
+    Author: Hans Fugal
 
     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
@@ -20,17 +22,37 @@
 #ifndef __lib_pbd_command_h__
 #define __lib_pbd_command_h__
 
-#include <pbd/statefuldestructible.h>
+#include <string>
+
+#include "pbd/libpbd_visibility.h"
+#include "pbd/signals.h"
+#include "pbd/statefuldestructible.h"
 
-class Command : public PBD::StatefulDestructible
+class LIBPBD_API Command : public PBD::StatefulDestructible, public PBD::ScopedConnectionList
 {
-    public:
-       virtual ~Command() {}
+public:
+       virtual ~Command() { /* NOTE: derived classes must call drop_references() */ }
+
        virtual void operator() () = 0;
-        virtual void undo() = 0;
-        virtual void redo() { (*this)(); }
-        virtual XMLNode &get_state();
-        virtual int set_state(const XMLNode&) { /* noop */ return 0; }
+       
+       void set_name (const std::string& str) { _name = str; }
+       const std::string& name() const { return _name; }
+
+       virtual void undo() = 0;
+       virtual void redo() { (*this)(); }
+       
+       virtual XMLNode &get_state();
+       virtual int set_state(const XMLNode&, int /*version*/) { /* noop */ return 0; }
+
+       virtual bool empty () const {
+               return false;
+       }
+
+protected:
+       Command() {}
+       Command(const std::string& name) : _name(name) {}
+
+       std::string _name;
 };
 
 #endif // __lib_pbd_command_h_