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#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "isubject.h"
#include "interfaces/observer.h"
#include <tqtl.h>
#include <kdebug.h>
namespace KMail {
ISubject::~ISubject()
{
mObserverList.clear();
}
void ISubject::attach( Interface::Observer * pObserver )
{
if ( tqFind( mObserverList.begin(), mObserverList.end(), pObserver ) == mObserverList.end() )
mObserverList.push_back( pObserver );
}
void ISubject::detach( Interface::Observer * pObserver ) {
TQValueVector<Interface::Observer*>::iterator it = tqFind( mObserverList.begin(), mObserverList.end(), pObserver );
if ( it != mObserverList.end() )
mObserverList.erase( it );
}
void ISubject::notify()
{
kdDebug(5006) << "ISubject::notify " << mObserverList.size() << endl;
// iterate over a copy (to prevent crashes when
// {attach(),detach()} is called from an Observer::update()
const TQValueVector<Interface::Observer*> copy = mObserverList;
for ( TQValueVector<Interface::Observer*>::const_iterator it = copy.begin() ; it != copy.end() ; ++it ) {
if ( (*it) ) {
(*it)->update( this );
}
}
}
}
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