OMKNotAttributeExtension.cpp

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/************************************************************************/
/* This file is part of openMask(c) INRIA, CNRS, Universite de Rennes 1 */
/* 1993-2002, thereinafter the Software                                 */
/*                                                                      */
/* The Software has been developped within the Siames Project.          */
/* INRIA, the University of Rennes 1 and CNRS jointly hold intellectual */
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/* The Software has been registered with the Agence pour la Protection  */
/* des Programmes (APP) under registration number                       */
/* IDDN.FR.001.510008.00.S.P.2001.000.41200                             */
/*                                                                      */
/* This file may be distributed under the terms of the Q Public License */
/* version 1.0 as defined by Trolltech AS of Norway and appearing in    */
/* the file LICENSE.QPL included in the packaging of this file.         */
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/* Licensees holding valid specific licenses issued by INRIA, CNRS or   */
/* Universite Rennes 1 for the software may use this file in            */
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/************************************************************************/
#include "OMKNotAttributeExtension.h"
#include "OMKParametersAccessor.inl"

using namespace OMK ;
using namespace OMK::Type ;

//=============================================================================
REGISTER_EXTENSION_FACTORY( NotAttributeExtension, "NotAttribute" ) ;
//-----------------------------------------------------------------------------
NotAttributeExtension::NotAttributeExtension(
  OMK::ExtensibleSimulatedObject* owner,
  const Name& id,
  bool registerExtension ) 
: ExtensionT< ExtensibleSimulatedObject >( owner, id, registerExtension ),
  _attributeAccessor( 0 )
{
  bool ok = true ;
  const ConfigurationParameterDescriptor* node = 0 ;
  ok = ok && ParametersAccessor::get(
    owner->getObjectDescriptor().getExtensionsParameters(), id.getString(), node ) ;
  Name attributeName ;
  ok = ok && ParametersAccessor::get( node, "AttributeId", attributeName ) ;
  _attributeAccessor = ok ? _owner->getBaseAttribute< bool >( attributeName ) : 0 ;
  ok = _attributeAccessor != 0 ;
  bool output = false ;
  ParametersAccessor::get( node, "Output", output ) ;
  if( !ok )
  {
    OMFATALERROR( "The attribute \"" << attributeName
                  << "\" is not available, maybe you should place this extension after the one which create this attribute" ) ;
  }
  _not = new AttributeT< bool >( Name( attributeName.getString() + "Not" ),
                                 !_attributeAccessor->get() ) ;
  owner->addAttribute( *_not, output ) ;
}
//-----------------------------------------------------------------------------
NotAttributeExtension::~NotAttributeExtension()
{
  delete _not ;
}
//-----------------------------------------------------------------------------
void NotAttributeExtension::preComputeParameters()
{
  if( _attributeAccessor->isUpdated() )
    _not->set( !_attributeAccessor->get() ) ;
  else if( _not->isUpdated() )
    _attributeAccessor->set( !_not->get() ) ;
}
//-----------------------------------------------------------------------------
void NotAttributeExtension::postComputeParameters()
{
  _not->set( !_attributeAccessor->get() ) ;
}
//=============================================================================

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