public void action() {
// Receives information about people joining and leaving
// the chat from the ChatManager agent
ACLMessage msg = myAgent.receive(template);
if (msg != null) {
if (msg.getPerformative() == ACLMessage.INFORM) {
try {
AbsPredicate p = (AbsPredicate) myAgent.getContentManager().extractAbsContent(msg);
if (p.getTypeName().equals(ChatOntology.JOINED)) {
// Get new participants, add them to the list of participants
// and notify the gui
AbsAggregate agg = (AbsAggregate) p.getAbsTerm(ChatOntology.JOINED_WHO);
if (agg != null) {
Iterator it = agg.iterator();
while (it.hasNext()) {
AbsConcept c = (AbsConcept) it.next();
participants.add(BasicOntology.getInstance().toObject(c));
}
}
myGui.notifyParticipantsChanged(getParticipantNames());
}
if (p.getTypeName().equals(ChatOntology.LEFT)) {
// Get old participants, remove them from the list of participants
// and notify the gui
AbsAggregate agg = (AbsAggregate) p.getAbsTerm(ChatOntology.JOINED_WHO);
if (agg != null) {
Iterator it = agg.iterator();
while (it.hasNext()) {
AbsConcept c = (AbsConcept) it.next();
participants.remove(BasicOntology.getInstance().toObject(c));
}
}
myGui.notifyParticipantsChanged(getParticipantNames());
}
} catch (Exception e) {
Logger.println(e.toString());
e.printStackTrace();
}
} else {
handleUnexpected(msg);
}
} else {
block();
}
}
//////////////////////////
// Private utility methods
//////////////////////////
private String[] getParticipantNames() {
String[] pp = new String[participants.size()];
Iterator it = participants.iterator();
int i = 0;
while (it.hasNext()) {
AID id = (AID) it.next();
pp[i++] = id.getLocalName();
}
return pp;
}
public void action() {
spokenMsg.clearAllReceiver();
Iterator it = participants.iterator();
while (it.hasNext()) {
spokenMsg.addReceiver((AID) it.next());
}
spokenMsg.setContent(sentence);
myGui.notifySpoken(myAgent.getLocalName(), sentence);
send(spokenMsg);
}