#include <sigc++/slot.h>
#include <sigc++/bind.h>
#include <sys/time.h>
-#include <pbd/command.h>
+
+#include "pbd/command.h"
typedef sigc::slot<void> UndoAction;
bool _clearing;
friend void command_death (UndoTransaction*, Command *);
+
+ void about_to_explicitly_delete ();
};
-class UndoHistory : public sigc::trackable
+class UndoHistory : public PBD::ScopedConnectionList
{
public:
UndoHistory();
void clear_undo ();
void clear_redo ();
+ /* returns all or part of the history.
+ 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
+ the full history, whichever is smaller.
+ */
+
XMLNode &get_state(int32_t depth = 0);
void save_state();
- void set_depth (int32_t);
- int32_t get_depth() const { return _depth; }
+ void set_depth (uint32_t);
- sigc::signal<void> Changed;
+ PBD::Signal0<void> Changed;
+ PBD::Signal0<void> BeginUndoRedo;
+ PBD::Signal0<void> EndUndoRedo;
private:
bool _clearing;
- int32_t _depth;
+ uint32_t _depth;
std::list<UndoTransaction*> UndoList;
std::list<UndoTransaction*> RedoList;