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;
};
 
} // namespace itk::simple
 
#endif