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package provider;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import org.json.JSONObject;
/**
* ResultListener that can contain multiple registrations.
*
* @author Peter Wu
*/
public class CompositeResultListener implements ResultListener {
private final List<ResultListener> listeners;
public CompositeResultListener() {
this.listeners = new ArrayList<>();
}
public void register(ResultListener rl) {
listeners.add(rl);
}
public void unregister(ResultListener rl) {
listeners.remove(rl);
}
public List<ResultListener> getRegistered() {
return new ArrayList<>(listeners);
}
public ResultListener findListener(Class<? extends ResultListener> rlCls) {
for (ResultListener rl : listeners) {
if (rlCls.isInstance(rl)) {
return rl;
}
}
return null;
}
@Override
public void tweetGenerated(JSONObject obj) {
for (ResultListener rl : listeners) {
rl.tweetGenerated(obj);
}
}
@Override
public void profileGenerated(JSONObject obj) {
for (ResultListener rl : listeners) {
rl.profileGenerated(obj);
}
}
}
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