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//==============================================================================
// General Code, © 2002 Ryan Winter
//==============================================================================
#include "subject.h"
#include <general/debug/debug.h>
//------------------------------------------------------------------------------
// public:
//------------------------------------------------------------------------------
Subject::Subject()
:
m_observer_list()
{
CLASSCERR("Subject::Subject");
}
//------------------------------------------------------------------------------
Subject::~Subject()
{
CLASSCERR("Subject::~Subject");
}
//------------------------------------------------------------------------------
void
Subject::notify()
{
CLASSCERR("Subject::notify");
// call update for all observers in the list
for (std::list<Observer *>::iterator iter = m_observer_list.begin();
iter != m_observer_list.end();
++iter)
{
(*iter)->update(*this);
}
}
//------------------------------------------------------------------------------
void
Subject::attach(Observer &observer)
{
CLASSCERR("Subject::attach(" << &observer << ")");
for (std::list<Observer *>::iterator iter = m_observer_list.begin();
iter != m_observer_list.end();
++iter)
{
if (*iter == &observer)
{
return;
}
}
m_observer_list.push_back(&observer);
}
//------------------------------------------------------------------------------
void
Subject::detach(const Observer &observer)
{
CLASSCERR("Subject::detach(" << &observer << ")");
for (std::list<Observer *>::iterator iter = m_observer_list.begin();
iter != m_observer_list.end();
++iter)
{
if (*iter == &observer)
{
m_observer_list.erase(iter);
}
}
}
//==============================================================================
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