//---------------------------------------------------------------------------------------
Observable* EventMouse::get_source()
{
ImoObj* pImo = get_imo_object();
if (pImo)
{
if (pImo->is_contentobj())
return static_cast<Observable*>( static_cast<ImoContentObj*>(pImo) );
else
return pImo->get_observable_parent();
}
return NULL;
}
//---------------------------------------------------------------------------------------
bool EventNotifier::notify_observers(SpEventInfo pEvent, Observable* target)
{
//returns true if event is dispatched to an observer
std::list<Observer*>::iterator it;
for (it = m_observers.begin(); it != m_observers.end(); ++it)
{
Observable* observedTarget = (*it)->target();
bool fNotify = (observedTarget == target);
//bubbling phase. This observer is not observing target but might be
//observing its parents
if (!fNotify)
{
ImoObj* pImo = dynamic_cast<ImoObj*>(target);
Observable* pObs = target;
if (pImo && pObs)
{
while(pImo && pObs && pObs != observedTarget)
{
pObs = pImo->get_observable_parent();
pImo = dynamic_cast<ImoObj*>( pObs );
}
fNotify = (pObs == observedTarget);
//TODO: do notification and continue bubbling.
}
}
if (fNotify)
{
LOMSE_LOG_DEBUG(Logger::k_events, "Posting event.");
m_pDispatcher->post_event((*it), pEvent);
// (*it)->notify(pEvent);
return true;
//TODO: remove 'return' when following problem is fixed:
// Object receiving notification might modify the document (i.e. link
// 'new problem') and this will invalidate target and all remaining
// objects in m_observers (!!!!)
}
}
LOMSE_LOG_DEBUG(Logger::k_events, "No observers. Event ignored");
return false;
}