-/*
+/*
Copyright (C) 2002 Brett Viren & Paul Davis
This program is free software; you can redistribute it and/or modify
#include <map>
#include <sigc++/slot.h>
#include <sigc++/bind.h>
+#ifndef COMPILER_MSVC
#include <sys/time.h>
-#include <pbd/command.h>
-#include <pbd/shiva.h>
+#else
+#include <ardourext/misc.h>
+#endif
+
+#include "pbd/libpbd_visibility.h"
+#include "pbd/command.h"
typedef sigc::slot<void> UndoAction;
-class UndoTransaction : public Command
+class LIBPBD_API UndoTransaction : public Command
{
public:
UndoTransaction ();
UndoTransaction (const UndoTransaction&);
UndoTransaction& operator= (const UndoTransaction&);
+ ~UndoTransaction ();
void clear ();
bool empty() const;
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 LIBPBD_API UndoHistory : public PBD::ScopedConnectionList
{
public:
UndoHistory();
~UndoHistory() {}
-
+
void add (UndoTransaction* ut);
void undo (unsigned int n);
void redo (unsigned int n);
-
+
unsigned long undo_depth() const { return UndoList.size(); }
unsigned long redo_depth() const { return RedoList.size(); }
-
+
std::string next_undo() const { return (UndoList.empty() ? std::string() : UndoList.back()->name()); }
std::string next_redo() const { return (RedoList.empty() ? std::string() : RedoList.back()->name()); }
If depth==0 it returns just the top
node. If depth<0, it returns everything.
If depth>0, it returns state for that
- many elements of the history, or
+ many elements of the history, or
the full history, whichever is smaller.
*/
void set_depth (uint32_t);
- sigc::signal<void> Changed;
-
+ PBD::Signal0<void> Changed;
+ PBD::Signal0<void> BeginUndoRedo;
+ PBD::Signal0<void> EndUndoRedo;
+
private:
bool _clearing;
uint32_t _depth;