Source code

/*
 * Callback.h 
 * Copyright (c) 2015 Antillia.com TOSHIYUKI ARAI. ALL RIGHTS RESERVED. 
 */


//2015/08/03

#pragma once

#include <viz++/Object.h>

namespace OZ {

template <class CLASS,     //A pointer to a C++ class
          typename METHOD, //A pointer to a method of CLASS
          typename PARAM>  //A parameter to a callback

class Callback1 :public Object {
private:
  CLASS   object;  //A pointer to an instance of CLASS
  METHOD  method;  //A pointer to a a method of CLASS

public:
  Callback1()
  :object(NULL),
  method(NULL)
  {
  }

public:
  void set(CLASS object, METHOD method)
  {
    if (object && method) {
      this -> object = object;
      this -> method = method;
    } else {
      throw IException("Invalid argument");
    }
  }

  //Call method of object with one parameter.
  void call(PARAM param)
  {
    if (object && method) {
      (object->*method)(param);
    }
  }
};


template <class CLASS,     //A pointer to a C++ class
          typename METHOD, //A pointer to a method of CLASS

          typename PARAM1,
          typename PARAM2>  //A parameter to a callback

class Callback2 :public Object {
private:
  CLASS   object;  //A pointer to an instance of CLASS
  METHOD  method;  //A pointer to a a method of CLASS

public:
  Callback2()
  :object(NULL),
  method(NULL)
  {
  }

public:
  void set(CLASS object, METHOD method)
  {
    if (object && method) {
      this -> object = object;
      this -> method = method;
    } else {
      throw IException("Invalid argument");
    }
  }
  //Call method of object two parameters.
  void call(PARAM1 param1, PARAM2 param2)
  {
    if (object && method) {
      (object->*method)(param1, param2);
    }
  }
};

template <class CLASS,     //A pointer to a C++ class
          typename METHOD, //A pointer to a method of CLASS

          typename PARAM1,
          typename PARAM2,
          typename PARAM3>  //A parameter to a callback

class Callback3 :public Object {
private:
  CLASS   object;  //A pointer to an instance of CLASS
  METHOD  method;  //A pointer to a a method of CLASS

public:
  Callback3()
  :object(NULL),
  method(NULL)
  {
  }

public:
  void set(CLASS object, METHOD method)
  {
    if (object && method) {
      this -> object = object;
      this -> method = method;
    } else {
      throw IException("Invalid argument");
    }
  }
  
  //Call method of object with three parameters.
  void call(PARAM1 param, PARAM2 param2, PARAM3 param3)
  {
    if (object && method) {
      (object->*method)(param1, param2, param3);
    }
  }
};

}