/***********************************************************************/
/* Open Visualization Data Explorer                                    */
/* (C) Copyright IBM Corp. 1989,1999                                   */
/* ALL RIGHTS RESERVED                                                 */
/* This code licensed under the                                        */
/*    "IBM PUBLIC LICENSE - Open Visualization Data Explorer"          */
/***********************************************************************/

#include <dxconfig.h>



#ifndef _DrivenDefinition_h
#define _DrivenDefinition_h

#include <Xm/Xm.h>

#include "UIConfig.h"
#include "defines.h"
#include "NodeDefinition.h"
#include "SIAllocatorDictionary.h"


//
// Class name definition:
//
#define ClassDrivenDefinition	"DrivenDefinition"

//
// Forward definitions 
//
class Parameter;
class ParameterDefinition;
class Node;

//
// DrivenDefinition class definition:
//				
class DrivenDefinition : public NodeDefinition 
{
  private:
	
  protected:
    //
    // Protected member data:
    //

    //
    // Driven nodes use AttributeParameters as input parameteters.
    //
    virtual Parameter *newParameter(ParameterDefinition *pd, 
							Node *n, int index);
    //
    // Mark all outputs as cache once with read-only cache attributes
    // (as per the semantics of data-driven interactors).
    // This helps to force an execution when inputs change that must have
    // their values communicated back to the User Interface.
    //
    void finishDefinition();

  public:
    //
    // Constructor:
    //
    DrivenDefinition() { }

    //
    // Destructor:
    //
    ~DrivenDefinition() { }
	
    virtual boolean isAllowedInMacro() { return FALSE; }

    //
    // Returns a pointer to the class name.
    //
    virtual const char* getClassName() 
	{ return ClassDrivenDefinition; }
};


#endif // _DrivenDefinition_h