onData method
void Function()
onData(})
Register callbacks
to trigger when stream has new results
where QueryResult.isNotLoading
Will deregister callbacks
after calling them on the first
result that QueryResult.isConcrete,
handling the resolution of lifecycle from
QueryLifecycle.sideEffectsBlocking to QueryLifecycle.completed
as appropriate, unless if removeAfterInvocation
is set to false.
Returns a function for removing the added callbacks
Implementation
void Function() onData(
Iterable<OnData<TParsed>> callbacks, {
bool removeAfterInvocation = true,
}) {
_onDataCallbacks.addAll(callbacks);
if (!removeAfterInvocation) {
_notRemovableOnDataCallbacks.addAll(callbacks);
}
return () {
_onDataCallbacks.removeWhere((cb) => callbacks.contains(cb));
_notRemovableOnDataCallbacks.removeWhere((cb) => callbacks.contains(cb));
};
}