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/*
* Copyright (c) 2012, Isode Limited, London, England.
* All rights reserved.
*/
package com.isode.stroke.signals;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* An approximation of the boost::signals system with 3 parameters
* @param <T1> Type 1
* @param <T2> Type 2
* @param <T3> Type 3
*/
public class Signal3<T1, T2, T3> {
private final Map<SignalConnection, Slot3<T1, T2,T3> > binds_ = Collections.synchronizedMap(
new HashMap<SignalConnection, Slot3<T1, T2,T3> >());
/**
* Add a slot which will be notified
* @param bind slot, not null
* @return signal connection
*/
public SignalConnection connect(Slot3<T1, T2,T3> bind) {
final SignalConnection connection = new SignalConnection();
binds_.put(connection, bind);
connection.onDestroyed.connect(new Slot() {
public void call() {
binds_.remove(connection);
}
});
return connection;
}
/**
* Notify all slots(listeners)
* @param p1 parameter value 1
* @param p2 parameter value 2
* @param p3 parameter value 3
*/
public void emit(T1 p1, T2 p2,T3 p3) {
List<Slot3<T1,T2, T3>> binds = new ArrayList<Slot3<T1, T2, T3>>();
binds.addAll(binds_.values());
for (Slot3<T1, T2, T3> bind : binds) {
bind.call(p1, p2, p3);
}
}
/**
* Remove all slots(listeners)
*/
public void disconnectAll() {
binds_.clear();
}
}
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Swift