package com.akjava.gwt.lib.hangouts.client.data;
import java.util.ArrayList;
import java.util.List;
import com.akjava.gwt.lib.hangouts.client.data.events.MessageReceivedEvent;
import com.akjava.gwt.lib.hangouts.client.data.listeners.MessageReceivedListener;
public class OnMessageReceived{
private OnMessageReceived(){}
private static native void registListener()/*-{
$wnd.gapi.hangout.data.onMessageReceived.add(@com.akjava.gwt.lib.hangouts.client.data.OnMessageReceived::fireListener(Lcom/akjava/gwt/lib/hangouts/client/data/events/MessageReceivedEvent;));
}-*/;
private static native void unregistListener()/*-{
$wnd.gapi.hangout.av.onMessageReceived.remove(@com.akjava.gwt.lib.hangouts.client.data.OnMessageReceived::fireListener(Lcom/akjava/gwt/lib/hangouts/client/data/events/MessageReceivedEvent;));
}-*/;
public static void add(MessageReceivedListener listener){
if(listeners==null){
listeners=new ArrayList<MessageReceivedListener>();
listeners.add(listener);
registListener();
}else{
listeners.add(listener);
}
}
public static void remove(MessageReceivedListener listener){
if(listeners==null){
}else{
listeners.remove(listener);
if(listeners.size()==0){
unregistListener();
listeners=null;
}
}
}
private static List<MessageReceivedListener> listeners;
synchronized static void fireListener(MessageReceivedEvent event){
for(MessageReceivedListener listener:listeners){
listener.onMessageReceived(event);
}
}
}