/////////////////////////////////////////////////////////////////////
//  component.cpp -  implements announce protocol in two derived   //
//  ver 1.0          classes with slightly different behavior      //
//                                                                 //
//  Language:        Visual C++, version 6.0, sp5                  //
//  Platform:        Dell Dimension 8100, Windows 2000 sp2         //
//  Application:     CSE791 - Distributed Objects                  //
//                   Demonstration of Programming to Interface     //
//  Author:          Jim Fawcett, CST 2-187, Syracuse University   //
//                   (315) 443-3948, jfawcett@twcny.rr.com         //
/////////////////////////////////////////////////////////////////////

#define IN_DLL

#pragma warning(disable : 4786)
#include <iostream>
#include <cstdlib>
#include "componentv1.h"

//----< constructor >------------------------------------------

announce1::announce1() {

  setString("new announce1 object");
}

//----< destructor >-------------------------------------------

announce1::~announce1() { delete str; }

//----< save string for use by announcer() >-------------------

DLL_DECL void announce1::setString(const char *s) {

  str = new char[strlen(s)+1];
  strcpy(str,s);
  str[strlen(s)] = '\0';
}

//----< display class identity >-------------------------------

DLL_DECL void announce1::announcer() {

  std::cout << "\n  object of class " << id();
  std::cout << ", version number = 1.0";
  std::cout << "\n  my string is: \"" << str << "\"";
}

//----< constructor >------------------------------------------

announce2::announce2() {

  setString("new announce2 object");
}

//----< destructor >-------------------------------------------

announce2::~announce2() { delete str; }

//----< save string for use by announcer() >-------------------

DLL_DECL void announce2::setString(const char *s) {

  str = new char[strlen(s)+1];
  strcpy(str,s);
  str[strlen(s)] = '\0';
}

//----< display class identity >-------------------------------

DLL_DECL void announce2::announcer() {

  std::cout << "\n  object of class " << id();
  std::cout << ", version number = 1.0";
  std::cout << "\n  my string is: \"" << str << "\"";
}

//

//----< register objects of this module for client >-----------

DLL_DECL void announce::registerObjects() {

  objFactory<announce>::reg(announce1::id(),announce1::create);
  objFactory<announce>::reg(announce2::id(),announce2::create);
}

//----< let client identify the object needed >----------------

DLL_DECL std::string announce::type(int n) {

  switch(n) {
    case 1 : return announce1::id();
    case 2 : return announce2::id();
    default :
      throw "unknown class in announce::ids()";
  }
  return "unknown";
}