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