inputPort.h

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/*******************************************************************************
** Copyright (c) 2003 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: inputPort.h,v $ $Revision: 1.10 $ $State: Exp $
*******************************************************************************/



#ifndef DtInputPort_H_
#define DtInputPort_H_

#include <vlutil/vlString.h>
#include <vlutil/vlList.h>
#include "vrfobjcore/vrfobjcoreDefines.h"

class DtPortConnection;
class DtPortData;


class DT_DLL_vrfobjcore DtInputPort
{
public:
   
   DtInputPort(const DtString& portName);
   virtual ~DtInputPort();

private:
   DtInputPort();
   DtInputPort(const DtInputPort&);
   DtInputPort& operator=(const DtInputPort&);

public:
   virtual const DtString& name() const;

   virtual bool acceptType(const DtString& type) const = 0;
   
   virtual void receiveData(DtPortData* data, const DtPortConnection* connection) = 0;

   virtual bool attemptToActivateConnection(DtPortConnection* conn,
      int connectionPriority) = 0;

   virtual bool canActivate(const DtPortConnection* conn, int connectionPriority) const = 0;

   virtual void deactivateConnection(DtPortConnection* conn) = 0;

   virtual bool activeConnection() const = 0;

   virtual bool connectionActive(const DtPortConnection* connection) const = 0;

   virtual int connectionPriority() const = 0;

   virtual void addConnection(DtPortConnection* conn);

   virtual void removeConnection(DtPortConnection* conn);

   virtual const DtList* connectionList() const;

   virtual bool newData() const;

   virtual void dataReceived();

   virtual bool enabled() const;
   virtual void setEnabled(bool flag);

protected:
   DtString myName;
   bool myNewDataFlag;
   bool myEnabled;
   DtList myConnectionList;
};

#endif