void SVGSMILElement::connectEventBaseConditions()
{
disconnectEventBaseConditions();
for (unsigned n = 0; n < m_conditions.size(); ++n) {
Condition* condition = m_conditions[n].get();
if (condition->getType() == Condition::EventBase) {
ASSERT(!condition->syncBase());
SVGElement* eventBase = eventBaseFor(*condition);
if (!eventBase) {
if (!condition->baseID().isEmpty() && !document().accessSVGExtensions().isElementPendingResource(this, AtomicString(condition->baseID())))
document().accessSVGExtensions().addPendingResource(AtomicString(condition->baseID()), this);
continue;
}
ASSERT(!condition->eventListener());
condition->setEventListener(ConditionEventListener::create(this, condition));
eventBase->addEventListener(AtomicString(condition->name()), condition->eventListener(), false);
addReferenceTo(eventBase);
}
}
}
void SVGSMILElement::disconnectEventBaseConditions()
{
for (unsigned n = 0; n < m_conditions.size(); ++n) {
Condition* condition = m_conditions[n].get();
if (condition->getType() == Condition::EventBase) {
ASSERT(!condition->syncBase());
if (!condition->eventListener())
continue;
// Note: It's a memory optimization to try to remove our condition
// event listener, but it's not guaranteed to work, since we have
// no guarantee that eventBaseFor() will be able to find our condition's
// original eventBase. So, we also have to disconnect ourselves from
// our condition event listener, in case it later fires.
SVGElement* eventBase = eventBaseFor(*condition);
if (eventBase)
eventBase->removeEventListener(AtomicString(condition->name()), condition->eventListener(), false);
condition->eventListener()->disconnectAnimation();
condition->setEventListener(nullptr);
}
}
}