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/******************************************************************************
* SOFA, Simulation Open-Framework Architecture, version 1.0 beta 4 *
* (c) 2006-2009 MGH, INRIA, USTL, UJF, CNRS *
* *
* This library is free software; you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as published by *
* the Free Software Foundation; either version 2.1 of the License, or (at *
* your option) any later version. *
* *
* This library is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
* for more details. *
* *
* You should have received a copy of the GNU Lesser General Public License *
* along with this library; if not, write to the Free Software Foundation, *
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
*******************************************************************************
* SOFA :: Framework *
* *
* Authors: M. Adam, J. Allard, B. Andre, P-J. Bensoussan, S. Cotin, C. Duriez,*
* H. Delingette, F. Falipou, F. Faure, S. Fonteneau, L. Heigeas, C. Mendoza, *
* M. Nesme, P. Neumann, J-P. de la Plata Alcade, F. Poyer and F. Roy *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
#ifndef SOFA_CORE_OBJECTMODEL_DDGNODE_H
#define SOFA_CORE_OBJECTMODEL_DDGNODE_H
#if !defined(__GNUC__) || (__GNUC__ > 3 || (_GNUC__ == 3 && __GNUC_MINOR__ > 3))
#pragma once
#endif
#include <sofa/core/core.h>
#include <list>
namespace sofa
{
namespace core
{
namespace objectmodel
{
/**
* \brief Abstract base to manage data dependencies. BaseData and DataEngine inherites from this class
*
*/
class SOFA_CORE_API DDGNode
{
public:
/// Constructor
DDGNode():dirty(false){}
/// Destructor. Do nothing
virtual ~DDGNode();
/// Update the value of Datas
virtual void update() = 0;
/// True if the Data has been modified
virtual void setDirty();
/// Set dirty flag to false
void cleanDirty();
/// Returns true if the DDGNode has been modified. Otherwise returns false
bool isDirty();
/// Add a new input to this node
void addInput(DDGNode* n);
/// Remove an input from this node
void delInput(DDGNode* n);
/// Add a new output to this node
void addOutput(DDGNode* n);
/// Remove an output from this node
void delOutput(DDGNode* n);
/// Get the list of inputs for this DDGNode
std::list<DDGNode*> getInputs();
/// Get the list of outputs for this DDGNode
std::list<DDGNode*> getOutputs();
protected:
std::list<DDGNode*> inputs;
std::list<DDGNode*> outputs;
bool dirty;
};
} // namespace objectmodel
} // namespace core
} // namespace sofa
#endif
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