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/*=========================================================================
*
* Copyright NumFOCUS
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef itkCreateObjectFunction_h
#define itkCreateObjectFunction_h
#include "itkObject.h"
namespace itk
{
/** \class CreateObjectFunctionBase
* \brief Define API for object creation callback functions.
*
* \ingroup ITKSystemObjects
* \ingroup ITKCommon
*/
class ITKCommon_EXPORT CreateObjectFunctionBase : public Object
{
public:
ITK_DISALLOW_COPY_AND_MOVE(CreateObjectFunctionBase);
/** Standard type alias. */
using Self = CreateObjectFunctionBase;
using Superclass = Object;
using Pointer = SmartPointer<Self>;
using ConstPointer = SmartPointer<const Self>;
/** Create an object and return a pointer to it as an
* itk::LightObject. */
virtual SmartPointer<LightObject>
CreateObject() = 0;
protected:
CreateObjectFunctionBase();
~CreateObjectFunctionBase() override;
};
/** \class CreateObjectFunction
* \brief Used to create callback functions that create ITK Objects for
* use with the itk::ObjectFactory.
*
* \ingroup ITKSystemObjects
* \ingroup ITKCommon
*/
template <typename T>
class CreateObjectFunction : public CreateObjectFunctionBase
{
public:
ITK_DISALLOW_COPY_AND_MOVE(CreateObjectFunction);
/** Standard class type aliases. */
using Self = CreateObjectFunction;
using Pointer = SmartPointer<Self>;
/** Methods from itk:LightObject. */
itkFactorylessNewMacro(Self);
LightObject::Pointer
CreateObject() override
{
return T::New().GetPointer();
}
protected:
CreateObjectFunction() = default;
~CreateObjectFunction() override = default;
};
} // end namespace itk
#endif
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