//
// $Id: absObservedGeometer.cpp,v 1.1 2001/06/14 19:10:00 hobbs Exp $
//
// File: absObservedGeometer.cpp
// Purpose: 
// Created:  4-APR-2000   John Hobbs
//
// $Revision: 1.1 $
//
//

// Include files
#include <iostream>
#include "geometry_system/management/GeometryObserver.hpp"
#include "geometry_system/management/absObservedGeometer.hpp"

// Global definitions
using namespace std;
using namespace dgs;

// Constructors/Destructors
absObservedGeometer::~absObservedGeometer() 
{
  for( int i=0 ; i<d_observers.size() ; i++ ) {
    cout << "absObservedGeometer::~absObserved Geometer, Removing link with observer at "
	 << d_observers[i] << endl;
    d_observers[i]->d_myGeometer = 0;
  }
}

// Accessors
void absObservedGeometer::add_observer(GeometryObserver* anObserver)
{
  // Don't add non existant observers.
  if( !anObserver ) return;

  // Don't add a duplicate entry
  for( int i=0 ; i<d_observers.size() ; i++ ) 
    if( d_observers[i] == anObserver ) return;

  // Add a new observer, though.
  //cout << "absObservedGeometer::add_observer.  Adding observer at " << anObserver << endl;
  d_observers.push_back(anObserver);
}

void absObservedGeometer::remove_observer(GeometryObserver* anObserver)
{
  vector<GeometryObserver*>::iterator i = d_observers.begin();
  while( i != d_observers.end() ) {
    if( *i == anObserver){
      cout << "absObservedGeometer::remove_observer.  Removing observer at " << anObserver << endl;
      d_observers.erase(i);
      return;
    }
    ++i;
  }
}

void absObservedGeometer::notify_observers()
{
  for( int i=0 ; i<d_observers.size() ; i++ ) d_observers[i]->update();
}