sitkFunctionCommand.h

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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
*
*         http://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 sitkFunctionCommand_h
#define sitkFunctionCommand_h
 
 
#include "sitkCommand.h"
 
#include <functional>
 
namespace itk::simple {
 
class SITKCommon_EXPORT FunctionCommand:
    public Command
{
public:
 
  using Self = FunctionCommand;
 
 
  ~FunctionCommand() override;
 
  FunctionCommand();
 
  void Execute() override;
 
  template <class T>
    void SetCallbackFunction ( T *object, void(T::* pMemberFunction )() )
  {
    m_Function = [object, pMemberFunction] { std::invoke(pMemberFunction, object); };
  }
 
  void SetCallbackFunction ( void(* pFunction )() );
 
  void SetCallbackFunction( void(* pFunction )(void *), void *clientData );
 
  void SetCallbackFunction( const std::function<void()> &);
 
private:
 
  using FunctionObjectType = std::function<void()>;
  FunctionObjectType m_Function;
 
};
 
}
 
#endif