/**
* subscribte to the chatroom
*
* @param chatter
*/
public void subscribe(Chatter chatter) {
chatter.addMessage(SIGNAL + "Welcome " + chatter.getSender() + SIGNAL);
synchronized (_chatters) {
_chatters.add(chatter);
}
say(
chatter.getSender(),
getDateTime() + ": " + SIGNAL + chatter.getSender() + " join this chatroom" + SIGNAL);
}
/**
* unsubsctibe to the chatroom
*
* @param chatter
*/
public void unsubscribe(Chatter chatter) {
_chatters.remove(chatter);
chatter.addMessage(SIGNAL + "Bye " + chatter.getSender() + SIGNAL);
synchronized (_chatters) {
for (Chatter _chatter : _chatters)
_chatter.addMessage(
getDateTime()
+ ": "
+ SIGNAL
+ chatter.getSender()
+ " leaves the chat room!"
+ SIGNAL);
}
}
private void say(String sender, String message) {
synchronized (_chatters) {
for (Chatter _chatter : _chatters)
if (!_chatter.getSender().equals(sender)) _chatter.addMessage(message);
}
}