Remove unused function PBD::sys::extension

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

diff --git a/libs/pbd/pbd/undo.h b/libs/pbd/pbd/undo.h
index 0e48bea96238c7b414572d50815e818121c08aad..11ff2bf321b806106001ce8a9f27d768b890c86a 100644 (file)
--- a/libs/pbd/pbd/undo.h
+++ b/libs/pbd/pbd/undo.h
@@ -26,8 +26,8 @@
 #include <sigc++/slot.h>
 #include <sigc++/bind.h>
 #include <sys/time.h>
+
 #include "pbd/command.h"
-#include "pbd/shiva.h"
 
 typedef sigc::slot<void> UndoAction;
 
@@ -37,6 +37,7 @@ class UndoTransaction : public Command
        UndoTransaction ();
        UndoTransaction (const UndoTransaction&);
        UndoTransaction& operator= (const UndoTransaction&);
+       ~UndoTransaction ();
 
        void clear ();
        bool empty() const;
@@ -61,20 +62,15 @@ class UndoTransaction : public Command
 
   private:
        std::list<Command*>    actions;
-       std::list<PBD::ProxyShiva<Command,UndoTransaction>*> shivas;
        struct timeval        _timestamp;
        bool                  _clearing;
 
        friend void command_death (UndoTransaction*, Command *);
        
-       friend class UndoHistory;
-
-       ~UndoTransaction ();
        void about_to_explicitly_delete ();
-       
 };
 
-class UndoHistory : public sigc::trackable
+class UndoHistory : public PBD::ScopedConnectionList
 {
   public:
        UndoHistory();
@@ -107,7 +103,9 @@ class UndoHistory : public sigc::trackable
 
        void set_depth (uint32_t);
 
-       sigc::signal<void> Changed;
+       PBD::Signal0<void> Changed;
+       PBD::Signal0<void> BeginUndoRedo;
+       PBD::Signal0<void> EndUndoRedo;
        
   private:
        bool _clearing;