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package tim.prune;
import java.util.ArrayList;
/**
* Class responsible for distributing update information
* to all registered listeners
*/
public abstract class UpdateMessageBroker
{
private static final ArrayList<DataSubscriber> _subscribers = new ArrayList<>();
/**
* Add a data subscriber to the list
* @param inSub DataSubscriber to add
*/
public static void addSubscriber(DataSubscriber inSub)
{
if (inSub != null) {
_subscribers.add(inSub);
}
}
/**
* Remove the given subscriber from the list
* @param inSub subscriber to remove
*/
public static void removeSubscriber(DataSubscriber inSub) {
_subscribers.remove(inSub);
}
/**
* Send a message to all subscribers that
* the data has been updated
*/
public static void informSubscribers() {
informSubscribers(DataSubscriber.ALL_DATA);
}
/**
* Send message to all subscribers
* @param inChange Change that occurred
*/
public static void informSubscribers(int inChange)
{
// TODO: Launch separate thread so that whatever caused the inform can finish
for (DataSubscriber subscriber : _subscribers) {
subscriber.dataUpdated(inChange);
}
}
/**
* Send message to all subscribers
* @param inMessage message to display informing of action completed
*/
public static void informSubscribers(String inMessage)
{
for (DataSubscriber subscriber : _subscribers) {
subscriber.actionCompleted(inMessage);
}
}
}
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