UnifiedEditHistory.h

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#ifndef CNOID_BASE_UNIFIED_EDIT_HISTORY_H
#define CNOID_BASE_UNIFIED_EDIT_HISTORY_H
 
#include <cnoid/Referenced>
#include <cnoid/Signal>
#include <string>
#include "exportdecl.h"
 
namespace cnoid {
 
class ExtensionManager;
 
class EditRecord;
typedef ref_ptr<EditRecord> EditRecordPtr;
 
class CNOID_EXPORT UnifiedEditHistory
{
public:
    static void initializeClass(ExtensionManager* ext);
    static UnifiedEditHistory* instance();
 
    int numRecords() const;
 
    EditRecord* record(int index);
 
    void addRecord(EditRecordPtr record);
    void beginEditGroup(const std::string& label);
    void endEditGroup();
 
    int currentPosition() const;
    bool undo();
    bool redo();
 
    void clear();
 
    SignalProxy<void()> sigHistoryUpdated();
    SignalProxy<void(int position)> sigCurrentPositionChanged();
 
private:
    UnifiedEditHistory(ExtensionManager* ext);
    ~UnifiedEditHistory();
    
    class Impl;
    Impl* impl;
};
 
}
 
#endif