// ClusterFindManager.h

#ifndef ClusterFindManager_H
#define ClusterFindManager_H

// This abstract class inherits from ClusterFinder and extends that
// interface to include methods for adding and dropping clusters
// in an internally managed container.  The type of container is not
// not specified here.

#include "ptr/Ptr.h"
#include "ptr/LocalSharedDeletePolicy.h"
#include "ClusterFinder.h"
#include "ClusterFinderPtr.h"

namespace trf {

class ClusterFindManager;

// Reference-counting pointers to a ClusterFindManager so that multiple
// layers or multiple layers and an external manager can "hold" the
// same cluster finder manager.
// Note that ClusterFindManager::DPTR has been renamed to
// MutableClusterFindManagerPtr.

typedef Ptr<ClusterFindManager,LocalSharedDeletePolicy> 
        MutableClusterFindManagerPtr;

typedef Ptr<const ClusterFindManager,LocalSharedDeletePolicy>
        ConstClusterFindManagerPtr;

typedef ConstClusterFindManagerPtr
        ClusterFindManagerPtr;

class ClusterFindManager : public ClusterFinder {

public:  // methods

  // constructor
  ClusterFindManager();

  // destructor
  ~ClusterFindManager();

  // Add a cluster.
  // Return nonzero for error.
  virtual int add_cluster(const ClusterPtr& pclu) =0;

  // Drop all clusters.
  virtual void drop_clusters() =0;

};

}  // end namespace trf

#endif