vtkMemberFunctionCommand.h

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// SPDX-FileCopyrightText: Copyright (c) Kitware Inc.
// SPDX-FileCopyrightText: Copyright (c) Sandia Corporation
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkMemberFunctionCommand_h
#define vtkMemberFunctionCommand_h

#include "vtkCommand.h"

template <class ClassT>
class vtkMemberFunctionCommand : public vtkCommand
{
  typedef vtkMemberFunctionCommand<ClassT> ThisT;

public:
  typedef vtkCommand Superclass;

  const char* GetClassNameInternal() const override { return "vtkMemberFunctionCommand"; }

  static ThisT* SafeDownCast(vtkObjectBase* o) { return dynamic_cast<ThisT*>(o); }

  static ThisT* New() { return new ThisT(); }

  void PrintSelf(ostream& os, vtkIndent indent) override
  {
    this->Superclass::PrintSelf(os, indent);
  }


  void SetCallback(ClassT& object, void (ClassT::*method)())
  {
    this->Object = &object;
    this->Method = method;
  }

  void SetCallback(ClassT& object, void (ClassT::*method2)(vtkObject*, unsigned long, void*))
  {
    this->Object = &object;
    this->Method2 = method2;
  }

  void Execute(vtkObject* caller, unsigned long event, void* calldata) override
  {
    if (this->Object && this->Method)
    {
      (this->Object->*this->Method)();
    }
    if (this->Object && this->Method2)
    {
      (this->Object->*this->Method2)(caller, event, calldata);
    }
  }
  void Reset()
  {
    this->Object = nullptr;
    this->Method2 = nullptr;
    this->Method = nullptr;
  }

private:
  vtkMemberFunctionCommand()
  {
    this->Object = nullptr;
    this->Method = nullptr;
    this->Method2 = nullptr;
  }

  ~vtkMemberFunctionCommand() override = default;

  ClassT* Object;
  void (ClassT::*Method)();
  void (ClassT::*Method2)(vtkObject* caller, unsigned long event, void* calldata);

  vtkMemberFunctionCommand(const vtkMemberFunctionCommand&) = delete;
  void operator=(const vtkMemberFunctionCommand&) = delete;
};

template <class ClassT>
vtkMemberFunctionCommand<ClassT>* vtkMakeMemberFunctionCommand(
  ClassT& object, void (ClassT::*method)())
{
  vtkMemberFunctionCommand<ClassT>* result = vtkMemberFunctionCommand<ClassT>::New();
  result->SetCallback(object, method);
  return result;
}

template <class ClassT>
vtkMemberFunctionCommand<ClassT>* vtkMakeMemberFunctionCommand(
  ClassT& object, void (ClassT::*method)(vtkObject*, unsigned long, void*))
{
  vtkMemberFunctionCommand<ClassT>* result = vtkMemberFunctionCommand<ClassT>::New();
  result->SetCallback(object, method);
  return result;
}

#endif
//-----------------------------------------------------------------------------
// VTK-HeaderTest-Exclude: vtkMemberFunctionCommand.h